3031 lines
102 KiB
C
3031 lines
102 KiB
C
/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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dmlog.c
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Abstract:
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Contains the quorum logging related functions for
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the cluster registry.
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Author:
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Sunita Shrivastava (sunitas) 24-Apr-1996
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Revision History:
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--*/
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#include "dmp.h"
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#include "tchar.h"
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#include "clusudef.h"
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/****
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@doc EXTERNAL INTERFACES CLUSSVC DM
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****/
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//global static data
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HLOG ghQuoLog=NULL; //pointer to the quorum log
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DWORD gbIsQuoResOnline = FALSE;
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DWORD gbNeedToCheckPoint = FALSE;
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DWORD gbIsQuoResEnoughSpace = TRUE;
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HLOG ghNewQuoLog = NULL; //pointer to the new quorum resource
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//global data
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extern HANDLE ghQuoLogOpenEvent;
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extern BOOL gbIsQuoLoggingOn;
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extern HANDLE ghDiskManTimer;
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extern HANDLE ghCheckpointTimer;
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extern PFM_RESOURCE gpQuoResource; //set when DmFormNewCluster is complete
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extern BOOL gbDmInited;
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#if NO_SHARED_LOCKS
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extern CRITICAL_SECTION gLockDmpRoot;
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#else
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extern RTL_RESOURCE gLockDmpRoot;
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#endif
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//forward definitions
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void DmpLogCheckPointCb();
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/****
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@func DWORD | DmPrepareQuorumResChange| When the quorum resource is changed,
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the FM invokes this api on the owner node of the new quorum resource
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to create a new quorum log file.
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@parm IN PVOID | pResource | The new quorum resource.
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@parm IN LPCWSTR | lpszPath | The path for temporary cluster files.
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@parm IN DWORD | dwMaxQuoLogSize | The maximum size limit for the quorum log file.
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@comm When a quorum resource is changed, the fm calls this funtion before it
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updates the quorum resource. If a new log file needs to be created,
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a checkpoint is taken.
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@rdesc Returns a result code. ERROR_SUCCESS on success.
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@xref <f DmSwitchToNewQuorumLog>
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****/
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DWORD DmPrepareQuorumResChange(
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IN PVOID pResource,
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IN LPCWSTR lpszPath,
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IN DWORD dwMaxQuoLogSize)
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{
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DWORD dwError=ERROR_SUCCESS;
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PFM_RESOURCE pNewQuoRes;
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WCHAR szFileName1[MAX_PATH]; //for new quorum log,for tombstonefile
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LSN FirstLsn;
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WCHAR szFileName2[MAX_PATH]; //for old quorum log, for temp tombstone
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DWORD dwCurLogSize;
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DWORD dwMaxLogSize;
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DWORD dwChkPtSequence;
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WIN32_FIND_DATA FindData;
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HANDLE hSrchTmpFiles;
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HANDLE hDirectory;
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pNewQuoRes = (PFM_RESOURCE)pResource;
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmPrepareQuorumResChange - Entry\r\n");
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//the resource is already online at this point
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//if the directory doesnt exist create it
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dwError = ClRtlCreateDirectory(lpszPath);
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if (dwError != ERROR_SUCCESS)
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{
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmPrepareQuorumResChange - Failed to create directory, Status=%1!u!\r\n",
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dwError);
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goto FnExit;
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}
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lstrcpyW(szFileName1, lpszPath);
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lstrcatW(szFileName1, cszQuoFileName);
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//if the log file is open here
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//this implies that the new quorum resource is the on the same node
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//as the old one
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if (ghQuoLog)
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{
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LogGetInfo(ghQuoLog, szFileName2, &dwCurLogSize, &dwMaxLogSize);
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//if the file is the same as the new log file, simply set the size
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if (!lstrcmpiW(szFileName2, szFileName1))
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{
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LogSetInfo(ghQuoLog, dwMaxQuoLogSize);
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ghNewQuoLog = ghQuoLog;
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goto CopyCpFiles;
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}
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}
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//delele all the quorum logging related files
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//delete the log if it exits
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DeleteFile(szFileName1);
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//delete all checkpoint files
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lstrcpyW(szFileName2, lpszPath);
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lstrcatW(szFileName2, L"*.tmp");
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hSrchTmpFiles = FindFirstFileW(szFileName2, & FindData);
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if (hSrchTmpFiles != INVALID_HANDLE_VALUE)
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{
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lstrcpyW(szFileName2, lpszPath);
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lstrcatW(szFileName2, FindData.cFileName);
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DeleteFile(szFileName2);
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while (FindNextFile( hSrchTmpFiles, & FindData))
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{
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lstrcpyW(szFileName2, lpszPath);
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lstrcatW(szFileName2, FindData.cFileName);
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DeleteFile(szFileName2);
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}
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FindClose(hSrchTmpFiles);
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}
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//set the security attributes for the file
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hDirectory = CreateFile(lpszPath,
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GENERIC_READ|WRITE_DAC|READ_CONTROL,
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0,
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NULL,
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OPEN_ALWAYS,
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FILE_FLAG_BACKUP_SEMANTICS,
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NULL);
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if (hDirectory == INVALID_HANDLE_VALUE)
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{
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dwError = GetLastError();
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmPrepareQuorumResChange - Failed to create file, Status=%1!u!\r\n",
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dwError);
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goto FnExit;
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}
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dwError = ClRtlSetObjSecurityInfo(hDirectory, SE_FILE_OBJECT,
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GENERIC_ALL, GENERIC_ALL, GENERIC_READ);
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CloseHandle(hDirectory);
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if (dwError != ERROR_SUCCESS)
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{
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmPrepareQuorumResChange - ClRtlSetObjSecurityInfo Failed, Status=%1!u!\r\n",
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dwError);
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goto FnExit;
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}
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//open the new log file
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmPrepareQuorumResChange: the name of the quorum file is %1!ls!\r\n",
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szFileName1);
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//open the log file
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ghNewQuoLog = LogCreate(szFileName1, dwMaxQuoLogSize,
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(PLOG_GETCHECKPOINT_CALLBACK)DmpGetSnapShotCb, NULL,
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TRUE, &FirstLsn);
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if (!ghNewQuoLog)
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{
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dwError = GetLastError();
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ClRtlLogPrint(LOG_UNUSUAL,
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"[DM] DmPrepareQuorumResChange: Quorum log could not be opened, error = %1!u!\r\n",
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dwError);
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CsLogEventData1( LOG_CRITICAL,
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CS_DISKWRITE_FAILURE,
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sizeof(dwError),
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&dwError,
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szFileName1 );
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CsInconsistencyHalt(ERROR_QUORUMLOG_OPEN_FAILED);
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}
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//create a checkpoint in the new place
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dwError = DmpGetSnapShotCb(lpszPath, NULL, szFileName1, &dwChkPtSequence);
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if (dwError != ERROR_SUCCESS)
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{
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CL_LOGFAILURE(dwError);
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CsInconsistencyHalt(ERROR_QUORUMLOG_OPEN_FAILED);
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goto FnExit;
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}
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dwError = LogCheckPoint(ghNewQuoLog, TRUE, szFileName1, dwChkPtSequence);
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if (dwError != ERROR_SUCCESS)
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{
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmPrepareQuorumResChange - failed to take chkpoint, error = %1!u!\r\n",
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dwError);
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goto FnExit;
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}
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmPrepareQuorumResChange - checkpoint taken\r\n");
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CopyCpFiles:
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//
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// Call the checkpoint manager to copy over any checkpoint files
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//
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dwError = CpCopyCheckpointFiles(lpszPath, FALSE);
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if (dwError != ERROR_SUCCESS)
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{
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goto FnExit;
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}
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//create the tombstone and tmp file names
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lstrcpyW(szFileName1, lpszPath);
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lstrcatW(szFileName1, cszQuoTombStoneFile);
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lstrcpyW(szFileName2, lpszPath);
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lstrcatW(szFileName2, cszTmpQuoTombStoneFile);
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//rename the quorum tomstone file,it if it exists
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if (!MoveFileExW(szFileName1, szFileName2,
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MOVEFILE_REPLACE_EXISTING|MOVEFILE_WRITE_THROUGH))
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{
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//this may fail if the tombstone doesnt exist, ignore error
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ClRtlLogPrint(LOG_UNUSUAL,
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"[DM] DmPrepareQuorumResChange:tombstone doesnt exist,movefilexW failed, error=0x%1!08lx!\r\n",
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GetLastError());
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}
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FnExit:
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if (dwError != ERROR_SUCCESS)
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{
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//if not sucess, clean up the new file
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if (ghNewQuoLog)
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{
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LogClose(ghNewQuoLog);
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ghNewQuoLog = NULL;
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}
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmPrepareQuorumResChange - Exit, error=0x%1!08lx!\r\n",
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dwError);
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} else {
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmPrepareQuorumResChange - Exit, status=0x%1!08lx!\r\n",
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dwError);
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}
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return(dwError);
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} // DmPrepareQuorumResChange
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/****
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@func void | DmDwitchToNewQuorumLog| This is called to switch to a new
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quorum log when the quorum resource is changed.
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@comm When a quorum resource is successfully changed, this function is
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to switch quorum logs. The synchronous notifications for the old resource
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are unhooked and those for the new resource file are hooked.
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@rdesc Returns a result code. ERROR_SUCCESS on success.
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@xref <f DmSwitchToNewQuorumLog>
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****/
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void DmSwitchToNewQuorumLog(
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IN LPCWSTR lpszQuoLogPath)
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{
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WCHAR szTmpQuoTombStone[MAX_PATH];
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DWORD dwError = ERROR_SUCCESS;
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmSwitchQuorumLogs - Entry\r\n");
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//unhook notifications with the old quorum resource
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DmpUnhookQuorumNotify();
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//ask the dm to register with the new quorum resource
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DmpHookQuorumNotify();
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//if the new log file exists... this is the owner of the new quorum resource.
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//the new log file may be the same as the old one
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if (ghNewQuoLog)
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{
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if (ghQuoLog && (ghQuoLog != ghNewQuoLog))
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{
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LogClose(ghQuoLog);
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//take another checkpoint to the new quorum file,
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//so that the last few updates make into it
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if ((dwError = LogCheckPoint(ghNewQuoLog, TRUE, NULL, 0))
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!= ERROR_SUCCESS)
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{
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ClRtlLogPrint(LOG_CRITICAL,
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"[DM] DmSwitchQuorumLogs - Failed to take a checkpoint\r\n");
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CL_UNEXPECTED_ERROR(dwError);
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}
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmSwitchQuorumLogs - taken checkpoint\r\n");
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ghQuoLog = NULL;
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}
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ghQuoLog = ghNewQuoLog;
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ghNewQuoLog = NULL;
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// if the old tombstome was replace by a tmp file at the beginning
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//of change quorum resource delete it now
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//get the tmp file for the new quorum resource
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lstrcpyW(szTmpQuoTombStone, lpszQuoLogPath);
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lstrcatW(szTmpQuoTombStone, cszTmpQuoTombStoneFile);
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DeleteFile(szTmpQuoTombStone);
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}
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else
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{
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//if the old log file is open, owner of the old quorum resource
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if (ghQuoLog)
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{
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LogClose(ghQuoLog);
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ghQuoLog = NULL;
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}
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}
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if (FmDoesQuorumAllowLogging() != ERROR_SUCCESS)
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{
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//this is not enough to ensure the dm logging will cease
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//the ghQuoLog parameter must be NULL
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CsNoQuorumLogging = TRUE;
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if (ghQuoLog)
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{
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LogClose(ghQuoLog);
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ghQuoLog = NULL;
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}
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} else if ( !CsUserTurnedOffQuorumLogging )
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{
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//
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// If the user did not turn off quorum logging explicitly, then turn it back on since
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// the new quorum resource is not local quorum.
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//
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CsNoQuorumLogging = FALSE;
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}
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmSwitchQuorumLogs - Exit!\r\n");
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return;
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}
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/****
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@func DWORD | DmReinstallTombStone| If the change to a new quorum
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resource fails, the new log is closed and the tombstone is
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reinstalled.
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@parm IN LPCWSTR | lpszQuoLogPath | The path for maintenance cluster files.
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@comm The old quorum log file is deleted and a tomstone file is created in its
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place. If this tombstone file is detected in the quorum path, the node
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is not allowed to do a form. It must do a join to find about the new
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quorum resource from the node that knows about the most recent quorum
|
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resource.
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@rdesc Returns a result code. ERROR_SUCCESS on success.
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@xref <f DmSwitchToNewQuorumLog>
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****/
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DWORD DmReinstallTombStone(
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IN LPCWSTR lpszQuoLogPath
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)
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{
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DWORD dwError=ERROR_SUCCESS;
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WCHAR szQuoTombStone[MAX_PATH];
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WCHAR szTmpQuoTombStone[MAX_PATH];
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ClRtlLogPrint(LOG_NOISE,
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"[DM] DmReinstallTombStone - Entry\r\n");
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if (ghNewQuoLog)
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{
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//get the tmp file for the new quorum resource
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lstrcpyW(szTmpQuoTombStone, lpszQuoLogPath);
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lstrcatW(szTmpQuoTombStone, cszTmpQuoTombStoneFile);
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|
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//create the tombstone file or replace the previous one with a new one
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lstrcpyW(szQuoTombStone, lpszQuoLogPath);
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lstrcatW(szQuoTombStone, cszQuoTombStoneFile);
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|
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//restore the tombstone
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if (!MoveFileExW(szTmpQuoTombStone, szQuoTombStone,
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MOVEFILE_REPLACE_EXISTING|MOVEFILE_WRITE_THROUGH))
|
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{
|
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//this may fail if the tombstone doesnt exist, ignore error
|
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ClRtlLogPrint(LOG_UNUSUAL,
|
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"[DM] DmReinstallTombStone :Warning-MoveFileExW failed, error=0x%1!08lx!\r\n",
|
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GetLastError());
|
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}
|
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// if this is not the same as the old log file, close it
|
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if (ghNewQuoLog != ghQuoLog)
|
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{
|
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LogClose(ghNewQuoLog);
|
|
}
|
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ghNewQuoLog = NULL;
|
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}
|
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|
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return(dwError);
|
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}
|
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|
|
|
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/****
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@func DWORD | DmCompleteQuorumResChange| This is called on the quorum resource
|
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if the old quorum log file is not the same as the new one.
|
|
|
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@parm IN PVOID | pOldQuoRes | The new quorum resource.
|
|
@parm IN LPCWSTR | lpszPath | The path for temporary cluster files.
|
|
@parm IN DWORD | dwMaxQuoLogSize | The maximum size limit for the quorum log file.
|
|
|
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@comm The old quorum log file is deleted and a tomstone file is created in its
|
|
place. If this tombstone file is detected in the quorum path, the node
|
|
is not allowed to do a form. It must do a join to find about the new
|
|
quorum resource from the node that knows about the most recent quorum
|
|
resource.
|
|
|
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@rdesc Returns a result code. ERROR_SUCCESS on success.
|
|
|
|
@xref <f DmSwitchToNewQuorumLog>
|
|
****/
|
|
DWORD DmCompleteQuorumResChange(
|
|
IN LPCWSTR lpszOldQuoResId,
|
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IN LPCWSTR lpszOldQuoLogPath
|
|
)
|
|
{
|
|
DWORD dwError=ERROR_SUCCESS;
|
|
WCHAR szOldQuoFileName[MAX_PATH];
|
|
HANDLE hTombStoneFile;
|
|
WCHAR szQuorumTombStone[MAX_PATH];
|
|
PQUO_TOMBSTONE pTombStone = NULL;
|
|
DWORD dwBytesWritten;
|
|
WIN32_FIND_DATA FindData;
|
|
HANDLE hSrchTmpFiles;
|
|
|
|
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmCompleteQuorumResChange - Entry\r\n");
|
|
|
|
//the old log file name
|
|
lstrcpyW(szOldQuoFileName, lpszOldQuoLogPath);
|
|
lstrcatW(szOldQuoFileName, cszQuoFileName);
|
|
|
|
//create the tombstone file or replace the previous one with a new one
|
|
lstrcpyW(szQuorumTombStone, lpszOldQuoLogPath);
|
|
lstrcatW(szQuorumTombStone, cszQuoTombStoneFile);
|
|
|
|
pTombStone = LocalAlloc(LMEM_FIXED, sizeof(QUO_TOMBSTONE));
|
|
if (!pTombStone)
|
|
{
|
|
CL_LOGFAILURE(ERROR_NOT_ENOUGH_MEMORY);
|
|
CsLogEvent(LOG_UNUSUAL, DM_TOMBSTONECREATE_FAILED);
|
|
goto DelOldFiles;
|
|
}
|
|
hTombStoneFile = CreateFileW(szQuorumTombStone,
|
|
GENERIC_READ | GENERIC_WRITE,
|
|
FILE_SHARE_READ|FILE_SHARE_WRITE,
|
|
NULL,
|
|
CREATE_ALWAYS,
|
|
0,
|
|
NULL);
|
|
|
|
if (hTombStoneFile == INVALID_HANDLE_VALUE)
|
|
{
|
|
//dont return failure
|
|
CL_LOGFAILURE(GetLastError());
|
|
CsLogEvent(LOG_UNUSUAL, DM_TOMBSTONECREATE_FAILED);
|
|
goto DelOldFiles;
|
|
|
|
}
|
|
//write the old quorum path to it.
|
|
lstrcpyn(pTombStone->szOldQuoResId, lpszOldQuoResId, MAXSIZE_RESOURCEID);
|
|
lstrcpy(pTombStone->szOldQuoLogPath, lpszOldQuoLogPath);
|
|
|
|
//write the tombstones
|
|
if (! WriteFile(hTombStoneFile, pTombStone, sizeof(QUO_TOMBSTONE),
|
|
&dwBytesWritten, NULL))
|
|
{
|
|
CL_LOGFAILURE(GetLastError());
|
|
CsLogEvent(LOG_UNUSUAL, DM_TOMBSTONECREATE_FAILED);
|
|
goto DelOldFiles;
|
|
}
|
|
|
|
CL_ASSERT(dwBytesWritten == sizeof(QUO_TOMBSTONE));
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmCompleteQuorumResChange: tombstones written\r\n");
|
|
|
|
DelOldFiles:
|
|
//
|
|
//delete the old quorum files
|
|
//
|
|
if (!DeleteFile(szOldQuoFileName))
|
|
CL_LOGFAILURE(GetLastError());
|
|
|
|
//delele other tmp files in there
|
|
lstrcpyW(szOldQuoFileName, lpszOldQuoLogPath);
|
|
lstrcatW(szOldQuoFileName, L"*.tmp");
|
|
hSrchTmpFiles = FindFirstFileW(szOldQuoFileName, & FindData);
|
|
if (hSrchTmpFiles != INVALID_HANDLE_VALUE)
|
|
{
|
|
lstrcpyW(szQuorumTombStone, lpszOldQuoLogPath);
|
|
lstrcatW(szQuorumTombStone, FindData.cFileName);
|
|
DeleteFile(szQuorumTombStone);
|
|
|
|
while (FindNextFile( hSrchTmpFiles, & FindData))
|
|
{
|
|
lstrcpyW(szQuorumTombStone, lpszOldQuoLogPath);
|
|
lstrcatW(szQuorumTombStone, FindData.cFileName);
|
|
DeleteFile(szQuorumTombStone);
|
|
}
|
|
FindClose(hSrchTmpFiles);
|
|
}
|
|
|
|
//
|
|
// Clean up the old registry checkpoint files
|
|
//
|
|
CpCompleteQuorumChange(lpszOldQuoLogPath);
|
|
|
|
if (hTombStoneFile != INVALID_HANDLE_VALUE)
|
|
CloseHandle(hTombStoneFile);
|
|
if (pTombStone) LocalFree(pTombStone);
|
|
return(dwError);
|
|
}
|
|
|
|
/****
|
|
@func DWORD | DmWriteToQuorumLog| When a transaction to the cluster database
|
|
is completed successfully, this function is invoked.
|
|
|
|
@parm DWORD | dwSequence | The sequnece number of the transaction.
|
|
|
|
@parm PVOID | pData | A pointer to a record data.
|
|
|
|
@parm DWORD | dwSize | The size of the record data in bytes.
|
|
|
|
@rdesc Returns a result code. ERROR_SUCCESS on success.
|
|
|
|
@xref
|
|
****/
|
|
DWORD WINAPI DmWriteToQuorumLog(
|
|
IN DWORD dwGumDispatch,
|
|
IN DWORD dwSequence,
|
|
IN DWORD dwType,
|
|
IN PVOID pData,
|
|
IN DWORD dwSize)
|
|
{
|
|
DWORD dwError=ERROR_SUCCESS;
|
|
|
|
//dmupdate is coming before the DmUpdateJoinCluster is called.
|
|
//at this point we are not the owner of quorum in any case
|
|
|
|
if (!gpQuoResource)
|
|
goto FnExit;
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmWriteToQuorumLog Entry Seq#=%1!u! Type=%2!u! Size=%3!u!\r\n",
|
|
dwSequence, dwType, dwSize);
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 6/3/99
|
|
//
|
|
// Make sure the gLockDmpRoot is held before LogCheckPoint is called
|
|
// so as to maintain the ordering between this lock and the log lock.
|
|
//
|
|
ACQUIRE_SHARED_LOCK(gLockDmpRoot);
|
|
|
|
//if I am the owner of the quorum logs, just write the record
|
|
if (gbIsQuoLoggingOn && ghQuoLog && gbIsQuoResOnline && AMIOWNEROFQUORES(gpQuoResource))
|
|
{
|
|
if (dwGumDispatch == PRE_GUM_DISPATCH)
|
|
{
|
|
//make sure the logger has enough space to commit this else
|
|
//refuse this GUM transaction
|
|
dwError = LogCommitSize(ghQuoLog, RMRegistryMgr, dwSize);
|
|
if (dwError != ERROR_SUCCESS)
|
|
{
|
|
if (dwError == ERROR_CLUSTERLOG_NOT_ENOUGH_SPACE)
|
|
{
|
|
//map error
|
|
CL_LOGCLUSERROR(LM_DISKSPACE_LOW_WATERMARK);
|
|
gbIsQuoResEnoughSpace = FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!gbIsQuoResEnoughSpace) gbIsQuoResEnoughSpace = TRUE;
|
|
}
|
|
}
|
|
else if (dwGumDispatch == POST_GUM_DISPATCH)
|
|
{
|
|
if (LogWrite(ghQuoLog, dwSequence, TTCompleteXsaction, RMRegistryMgr,
|
|
dwType, pData, dwSize) == NULL_LSN)
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmWriteToQuorumLog failed, error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
}
|
|
}
|
|
}
|
|
|
|
RELEASE_LOCK(gLockDmpRoot);
|
|
|
|
FnExit:
|
|
return (dwError);
|
|
|
|
}
|
|
|
|
/****
|
|
@func DWORD | DmpChkQuoTombStone| This checks the quorum logs to ensure
|
|
that it is the most recent one before rolling in the changes.
|
|
|
|
@rdesc Returns a result code. ERROR_SUCCESS on success.
|
|
|
|
@comm This looks for the tombstone file and if one exists. It checks if this
|
|
quorum file is marked as dead in there.
|
|
|
|
@xref <f FmSetQuorumResource>
|
|
****/
|
|
DWORD DmpChkQuoTombStone()
|
|
{
|
|
DWORD dwError=ERROR_SUCCESS;
|
|
WCHAR szQuorumLogPath[MAX_PATH];
|
|
WCHAR szQuorumTombStone[MAX_PATH];
|
|
HANDLE hTombStoneFile = INVALID_HANDLE_VALUE;
|
|
PQUO_TOMBSTONE pTombStone = NULL;
|
|
DWORD dwBytesRead;
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpChkQuoTombStone - Entry\r\n");
|
|
|
|
dwError = DmGetQuorumLogPath(szQuorumLogPath, sizeof(szQuorumLogPath));
|
|
if (dwError)
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpChkQuoTombStone - DmGetQuorumLogPath failed,error=0x%1!08lx!\n",
|
|
dwError);
|
|
goto FnExit;
|
|
}
|
|
|
|
lstrcpyW(szQuorumTombStone, szQuorumLogPath);
|
|
lstrcatW(szQuorumTombStone, L"\\quotomb.stn");
|
|
|
|
pTombStone = LocalAlloc(LMEM_FIXED, sizeof(QUO_TOMBSTONE));
|
|
if (!pTombStone)
|
|
{
|
|
dwError = ERROR_NOT_ENOUGH_MEMORY;
|
|
goto FnExit;
|
|
}
|
|
|
|
hTombStoneFile = CreateFileW(szQuorumTombStone,
|
|
GENERIC_READ | GENERIC_WRITE,
|
|
FILE_SHARE_READ|FILE_SHARE_WRITE,
|
|
NULL,
|
|
OPEN_EXISTING,
|
|
0,
|
|
NULL);
|
|
|
|
if (hTombStoneFile == INVALID_HANDLE_VALUE)
|
|
{
|
|
//there is no tombstone file, not a problem-we can proceed with the form
|
|
goto FnExit;
|
|
}
|
|
|
|
//found a tombstone file
|
|
//read the file
|
|
if (! ReadFile(hTombStoneFile, pTombStone, sizeof(QUO_TOMBSTONE),
|
|
&dwBytesRead, NULL))
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpChkQuoTombStone - Couldn't read the tombstone,error=0x%1!08lx!\n",
|
|
dwError);
|
|
//dont return an error, we can proceed with form??
|
|
goto FnExit;
|
|
}
|
|
|
|
if (dwBytesRead != sizeof(QUO_TOMBSTONE))
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpChkQuoTombStone - Couldn't read the entire tombstone\r\n");
|
|
//dont return an error, we can proceed with form??
|
|
goto FnExit;
|
|
}
|
|
|
|
|
|
if ((!lstrcmpW(OmObjectId(gpQuoResource), pTombStone->szOldQuoResId))
|
|
&& (!lstrcmpiW(szQuorumLogPath, pTombStone->szOldQuoLogPath)))
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpChkQuoTombStone:A tombstone for this resource, and quorum log file was found here.\r\n");
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpChkQuoTombStone:This is node is only allowed to do a join, make sure another node forms\r\n");
|
|
//log something into the eventlog
|
|
CL_LOGCLUSERROR(SERVICE_MUST_JOIN);
|
|
//we exit with succes because this is by design and we dont want
|
|
//clusprxy to retry starting unnecessarily
|
|
ExitProcess(dwError);
|
|
goto FnExit;
|
|
}
|
|
else
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpChkQuoTombStone: Bogus TombStone ??\r\n");
|
|
#if DBG
|
|
if (IsDebuggerPresent())
|
|
DebugBreak();
|
|
#endif
|
|
goto FnExit;
|
|
|
|
}
|
|
FnExit:
|
|
if (hTombStoneFile != INVALID_HANDLE_VALUE)
|
|
CloseHandle(hTombStoneFile);
|
|
if (pTombStone) LocalFree(pTombStone);
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpChkQuoTombStone: Exit, returning 0x%1!08lx!\r\n",
|
|
dwError);
|
|
return(dwError);
|
|
}
|
|
|
|
|
|
/****
|
|
@func DWORD | DmpApplyChanges| When dm is notified that the cluster form is
|
|
occuring, it calls DmpApplyChanges to apply the quorum logs to the
|
|
cluster database.
|
|
|
|
@rdesc Returns a result code. ERROR_SUCCESS on success.
|
|
|
|
@comm This opens the quorum file. Note that it doesnt close the quorum file.
|
|
|
|
@xref
|
|
****/
|
|
DWORD DmpApplyChanges()
|
|
{
|
|
LSN FirstLsn;
|
|
DWORD dwErr = ERROR_SUCCESS;
|
|
DWORD dwSequence;
|
|
DM_LOGSCAN_CONTEXT DmAppliedChangeContext;
|
|
|
|
|
|
if (ghQuoLog == NULL)
|
|
{
|
|
return(ERROR_QUORUMLOG_OPEN_FAILED);
|
|
}
|
|
//find the current sequence number from the registry
|
|
dwSequence = DmpGetRegistrySequence();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpApplyChanges: The current registry sequence number %1!d!\r\n",
|
|
dwSequence);
|
|
|
|
// upload a database if the current sequence number is lower or equal to
|
|
// the one in the database OR if the user is forcing a restore database
|
|
// operation.
|
|
// find the lsn of the record from which we need to start applying changes
|
|
// if null there are no changes to apply
|
|
dwErr = DmpLogFindStartLsn(ghQuoLog, &FirstLsn, &dwSequence);
|
|
|
|
if (dwErr != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpApplyChanges: DmpLogFindStartLsn failed, error=0x%1!08lx!\r\n",
|
|
dwErr);
|
|
goto FnExit;
|
|
}
|
|
|
|
//dwSequence now contains the current sequence number in the registry
|
|
DmAppliedChangeContext.dwSequence = dwSequence;
|
|
|
|
if (FirstLsn != NULL_LSN)
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpApplyChanges: The LSN of the record to apply changes from 0x%1!08lx!\r\n",
|
|
FirstLsn);
|
|
|
|
if (dwErr = LogScan(ghQuoLog, FirstLsn, TRUE,(PLOG_SCAN_CALLBACK)DmpLogApplyChangesCb,
|
|
&DmAppliedChangeContext) != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpApplyChanges: LogScan failed, error=0x%1!08lx!\r\n",
|
|
dwErr);
|
|
}
|
|
//if the more changes have been applied
|
|
if (DmAppliedChangeContext.dwSequence != dwSequence)
|
|
{
|
|
//set the gum sequence number to the trid that has been applied
|
|
GumSetCurrentSequence(GumUpdateRegistry, DmAppliedChangeContext.dwSequence);
|
|
//update the registry with this sequence number
|
|
DmpUpdateSequence();
|
|
//set the gum sequence number to one higher for the next transaction
|
|
GumSetCurrentSequence(GumUpdateRegistry,
|
|
(DmAppliedChangeContext.dwSequence + 1));
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpApplyChanges: Gum sequnce number set to = %1!d!\r\n",
|
|
(DmAppliedChangeContext.dwSequence + 1));
|
|
|
|
}
|
|
}
|
|
FnExit:
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpApplyChanges: Exit, returning 0x%1!08lx!\r\n",
|
|
dwErr);
|
|
return(dwErr);
|
|
}
|
|
|
|
|
|
/****
|
|
@func DWORD | DmpFindStartLsn| Uploads the last checkpoint from the
|
|
quorum and returns the LSN of the record from which the changes
|
|
should be applied.
|
|
|
|
@parm IN HLOG | hQuoLog | the log file handle.
|
|
|
|
@parm OUT LSN *| pStartScanLsn | Returns the LSN of the record in the
|
|
quorum log from which changes must be applied is returned here.
|
|
NULL_LSN is returned if no changes need to be applied.
|
|
|
|
@parm IN OUT LPDWORD | *pdwSequence | Should be set to the current sequence
|
|
number is the cluster registry. If a new chkpoint is uploaded, the
|
|
sequence number corresponding to that is returned.
|
|
|
|
@rdesc Returns ERROR_SUCCESS if a valid LSN is returned. This may be NULL_LSN.
|
|
Returns the error code if the database cannot be uploaded from the last chkpoint
|
|
or if something horrible happens.
|
|
|
|
@comm This finds the last valid check point in the log file. The data
|
|
base is synced with this checkpoint and the gum sequence number is
|
|
set to one plus the sequence number of that checkpoint. If no
|
|
checkpoint record is found, a checkpoint is taken and NULL_LSN is
|
|
returned.
|
|
|
|
@xref
|
|
****/
|
|
DWORD DmpLogFindStartLsn(
|
|
IN HLOG hQuoLog,
|
|
OUT LSN *pStartScanLsn,
|
|
IN OUT LPDWORD pdwSequence)
|
|
{
|
|
LSN ChkPtLsn;
|
|
LSN StartScanLsn;
|
|
DWORD dwChkPtSequence=0;
|
|
DWORD dwError = ERROR_SUCCESS;
|
|
WCHAR szChkPtFileName[LOG_MAX_FILENAME_LENGTH];
|
|
DM_LOGSCAN_CONTEXT DmAppliedChangeContext;
|
|
|
|
*pStartScanLsn = NULL_LSN;
|
|
ChkPtLsn = NULL_LSN;
|
|
//read the last check point record if any and the transaction id till that
|
|
//checkpoint
|
|
dwError = LogGetLastChkPoint(hQuoLog, szChkPtFileName, &dwChkPtSequence,
|
|
&ChkPtLsn);
|
|
if (dwError != ERROR_SUCCESS)
|
|
{
|
|
//no chk point record found
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogFindStartLsn: LogGetLastChkPoint failed, error=0x%1!08lx!\r\n",
|
|
dwError );
|
|
|
|
// this can happen either due to the fact that the log file was just created,
|
|
// and hence there is no checkpoint or because log file was messed up
|
|
// and the mount process corrected it but removed the checkpoint.
|
|
// If it is the second case, then logpmountlog should put something in the
|
|
// event log
|
|
if (dwError == ERROR_CLUSTERLOG_CHKPOINT_NOT_FOUND)
|
|
{
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 6/3/99
|
|
//
|
|
// Make sure the gLockDmpRoot is held before LogCheckPoint is called
|
|
// so as to maintain the ordering between this lock and the log lock.
|
|
//
|
|
ACQUIRE_SHARED_LOCK(gLockDmpRoot);
|
|
|
|
//take a checkpoint, so that this doesnt happen the next time
|
|
dwError = LogCheckPoint(hQuoLog, TRUE, NULL, 0);
|
|
|
|
RELEASE_LOCK(gLockDmpRoot);
|
|
|
|
if (dwError != ERROR_SUCCESS)
|
|
{
|
|
//check point could not be taken
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogFindStartLsn: Checkpoint on first form failed, error=0x%1!08lx!\r\n",
|
|
dwError );
|
|
goto FnExit;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
//there were other errors
|
|
goto FnExit;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
//found check point record
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpLogFindStartLsn: LogGetLastChkPt rets, Seq#=%1!d! ChkPtLsn=0x%2!08lx!\r\n",
|
|
dwChkPtSequence, ChkPtLsn);
|
|
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 10/18/98
|
|
//
|
|
// If the user is forcing a database restore from backup, then
|
|
// do not check whether the current sequence number in the registry
|
|
// is younger than the checkpoint sequence number in the quorum log.
|
|
// Just, go ahead and load the checkpoint from restored database.
|
|
//
|
|
if ( CsDatabaseRestore == TRUE )
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpLogFindStartLsn: User forcing a chkpt upload from quorum log...\r\n");
|
|
}
|
|
else
|
|
{
|
|
|
|
//if the sequence number is greater than the check point sequence number
|
|
//plus one, that implies..that only changes from that sequence number
|
|
//need to be applied.(this node may not have been the first one to die)
|
|
//We dont always apply the database because if logging is mostly off
|
|
//and the two nodes die simultaneosly we want to prevent losing all the
|
|
//changes
|
|
//else if the checkpoint sequence is one below the current
|
|
//current sequence number, then the locker node could have died after updating
|
|
//get the current checkpoint irrespective of what the current sequence number is
|
|
//this is because a checkpoint with the same sequence number may have
|
|
//a change that is different from whats there in the current registry.
|
|
//if node 'a'(locker and logger dies in the middle of logging trid=x+1,
|
|
//the other node,'b' will take over logging and checkpoint the database
|
|
//at trid=x. If 'a' comes back up, it needs to throw aways its x+1 change
|
|
//and apply changes from the log from chk pt x.
|
|
|
|
if (*pdwSequence > (dwChkPtSequence + 1))
|
|
{
|
|
//the current sequence number is less than or equal to chkpt Seq + 1
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpLogFindStartLsn: ChkPt not applied, search for next seq\r\n");
|
|
|
|
|
|
DmAppliedChangeContext.dwSequence = *pdwSequence;
|
|
DmAppliedChangeContext.StartLsn = NULL_LSN;
|
|
//find the LSN from which to apply changes
|
|
if (dwError = LogScan(ghQuoLog, ChkPtLsn, TRUE,(PLOG_SCAN_CALLBACK)DmpLogFindStartLsnCb,
|
|
&DmAppliedChangeContext) != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogFindStartLsn: LogScan failed, no changes will be applied, error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
goto FnExit;
|
|
}
|
|
*pStartScanLsn = DmAppliedChangeContext.StartLsn;
|
|
goto FnExit;
|
|
}
|
|
}
|
|
|
|
//
|
|
// The current registry sequence number is less than or equal
|
|
// to chkpt Seq + 1 OR the user is forcing a database restore
|
|
// from the backup area.
|
|
//
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpLogFindStartLsn: Uploading chkpt from quorum log\r\n");
|
|
|
|
|
|
//make sure that no keys are added to the key list because of opens/creates
|
|
ACQUIRE_EXCLUSIVE_LOCK(gLockDmpRoot);
|
|
//hold the key lock as well
|
|
EnterCriticalSection(&KeyLock);
|
|
|
|
//invalidate all open keys
|
|
DmpInvalidateKeys();
|
|
|
|
if ((dwError = DmInstallDatabase(szChkPtFileName, NULL, FALSE)) != ERROR_SUCCESS)
|
|
{
|
|
//couldnt install the database
|
|
//bad !
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogFindStartLsn: DmpInstallDatabase failed, error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
CsLogEventData( LOG_CRITICAL,
|
|
DM_CHKPOINT_UPLOADFAILED,
|
|
sizeof(dwError),
|
|
&dwError );
|
|
DmpReopenKeys();
|
|
//release the locks
|
|
LeaveCriticalSection(&KeyLock);
|
|
RELEASE_LOCK(gLockDmpRoot);
|
|
goto FnExit;
|
|
}
|
|
else
|
|
{
|
|
//the current sequence number is less than or equal to chkpt Seq + 1
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpLogFindStartLsn: chkpt uploaded from quorum log\r\n");
|
|
|
|
//since we downloaded the database, we should start
|
|
//aplying changes from ChkPtLsn
|
|
*pStartScanLsn = ChkPtLsn;
|
|
*pdwSequence = dwChkPtSequence;
|
|
//set the gum sequence number to be the next one
|
|
//ss: the next logged transaction shouldnt have the same
|
|
//transaction id
|
|
GumSetCurrentSequence(GumUpdateRegistry, (dwChkPtSequence+1));
|
|
//reopen the keys
|
|
DmpReopenKeys();
|
|
//release the locks
|
|
LeaveCriticalSection(&KeyLock);
|
|
RELEASE_LOCK(gLockDmpRoot);
|
|
goto FnExit;
|
|
}
|
|
}
|
|
|
|
FnExit:
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpLogFindStartLsn: LSN=0x%1!08lx!, returning 0x%2!08lx!\r\n",
|
|
*pStartScanLsn, dwError);
|
|
|
|
return(dwError);
|
|
}
|
|
|
|
/****
|
|
@func DWORD | DmpLogFindStartLsnCb| The callback tries to find the first record
|
|
with a transaction id that is larger than the sequence number of the
|
|
local database.
|
|
|
|
@parm PVOID | pContext| A pointer to a DM_STARTLSN_CONTEXT structure.
|
|
@parm LSN | Lsn| The LSN of the record.
|
|
@parm RMID | Resource | The resource manager for this transaction.
|
|
@parm RMID | ResourceType | The resource manager for this transaction.
|
|
@parm TRID | Transaction | The transaction number of this record.
|
|
@parm PVOID | pLogData | The log data for this record.
|
|
@parm DWORD | DataLength | The length of the record.
|
|
|
|
@rdesc Returns TRUE to continue scan. FALSE to stop.
|
|
|
|
@comm This function returns true if the sequence number of the record
|
|
being scanned is higher than the seqence number passed in the context.
|
|
|
|
@xref <f DmpLogFindStartLsn> <f LogScan>
|
|
****/
|
|
BOOL WINAPI DmpLogFindStartLsnCb(
|
|
IN PVOID pContext,
|
|
IN LSN Lsn,
|
|
IN RMID Resource,
|
|
IN RMTYPE ResourceFlags,
|
|
IN TRID Transaction,
|
|
IN TRTYPE TrType,
|
|
IN const PVOID pLogData,
|
|
IN DWORD DataLength)
|
|
{
|
|
PDM_LOGSCAN_CONTEXT pDmStartLsnContext= (PDM_LOGSCAN_CONTEXT) pContext;
|
|
|
|
|
|
CL_ASSERT(pDmStartLsnContext);
|
|
if (Transaction > (int)pDmStartLsnContext->dwSequence)
|
|
{
|
|
pDmStartLsnContext->StartLsn = Lsn;
|
|
return (FALSE);
|
|
}
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/****
|
|
@func DWORD | DmpHookQuorumNotify| This hooks a callback to be invoked whenever
|
|
the state of the quorum resource changes.
|
|
|
|
@rdesc Returns a result code. ERROR_SUCCESS on success.
|
|
|
|
@comm This is used to monitor the state of
|
|
@xref
|
|
****/
|
|
DWORD DmpHookQuorumNotify()
|
|
{
|
|
|
|
DWORD dwError = ERROR_SUCCESS;
|
|
|
|
if (dwError = FmFindQuorumResource(&gpQuoResource))
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmUpdateFormNewCluster: FmFindQuorumResource failed, error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
goto FnExit;
|
|
}
|
|
|
|
dwError = OmRegisterNotify(gpQuoResource, NULL,
|
|
NOTIFY_RESOURCE_POSTONLINE| NOTIFY_RESOURCE_PREOFFLINE |
|
|
NOTIFY_RESOURCE_OFFLINEPENDING | NOTIFY_RESOURCE_POSTOFFLINE |
|
|
NOTIFY_RESOURCE_FAILED,
|
|
DmpQuoObjNotifyCb);
|
|
|
|
FnExit:
|
|
return(dwError);
|
|
}
|
|
|
|
|
|
/****
|
|
@func DWORD | DmpUnhookQuorumNotify| This unhooks the callback function
|
|
that is registered with the object.
|
|
|
|
@parm PVOID | pContext| A pointer to a DMLOGRECORD structure.
|
|
@parm PVOID | pObject| A pointer to quorum resource object.
|
|
@parm DWORD | dwNotification| A pointer to a DMLOGRECORD structure.
|
|
|
|
@rdesc Returns a result code. ERROR_SUCCESS on success.
|
|
|
|
@xref
|
|
****/
|
|
|
|
DWORD DmpUnhookQuorumNotify()
|
|
{
|
|
DWORD dwError = ERROR_SUCCESS;
|
|
|
|
if (gpQuoResource)
|
|
{
|
|
dwError = OmDeregisterNotify(gpQuoResource, DmpQuoObjNotifyCb);
|
|
OmDereferenceObject(gpQuoResource);
|
|
}
|
|
return(ERROR_SUCCESS);
|
|
}
|
|
|
|
|
|
/****
|
|
@func DWORD | DmpQuoObjNotifyCb| This is a callback that is called on
|
|
change of state on quorum resource.
|
|
|
|
@parm PVOID | pContext| A pointer to a DMLOGRECORD structure.
|
|
@parm PVOID | pObject| A pointer to quorum resource object.
|
|
@parm DWORD | dwNotification| A pointer to a DMLOGRECORD structure.
|
|
|
|
@rdesc Returns a result code. ERROR_SUCCESS on success.
|
|
|
|
@xref
|
|
****/
|
|
|
|
void DmpQuoObjNotifyCb(
|
|
IN PVOID pContext,
|
|
IN PVOID pObject,
|
|
IN DWORD dwNotification)
|
|
{
|
|
|
|
switch(dwNotification)
|
|
{
|
|
case NOTIFY_RESOURCE_POSTONLINE:
|
|
gbIsQuoResOnline = TRUE;
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: Quorum resource is online\r\n");
|
|
|
|
//if this is the owner of the quorum resource
|
|
//and the log is not open, open the log
|
|
if (AMIOWNEROFQUORES(gpQuoResource) && !CsNoQuorumLogging)
|
|
{
|
|
|
|
//ToDo: the quorum file name should be obtained from the setup
|
|
//for now obtain the value from the cluster registry.
|
|
PTEB CurrentTeb;
|
|
WCHAR szQuorumFileName[MAX_PATH];
|
|
LSN FirstLsn;
|
|
DWORD dwError;
|
|
DWORD dwType;
|
|
DWORD dwLength;
|
|
DWORD dwMaxQuoLogSize;
|
|
DWORD bForceReset = FALSE;
|
|
DWORD OldHardErrorValue;
|
|
|
|
//bug# :106647
|
|
//SS: HACKHACK disabling hard error pop ups so that disk corruption
|
|
//is caught somewhere else..
|
|
//atleast the pop-ups must be disabled for the whole process !
|
|
//me thinks this is covering up the problem of disk corruption
|
|
//disk corruption should not occur!
|
|
CurrentTeb = NtCurrentTeb();
|
|
OldHardErrorValue = CurrentTeb->HardErrorsAreDisabled;
|
|
CurrentTeb->HardErrorsAreDisabled = 1;
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: Own quorum resource, try open the quorum log\r\n");
|
|
|
|
if (DmGetQuorumLogPath(szQuorumFileName, sizeof(szQuorumFileName)) != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: Quorum log file is not configured\r\n");
|
|
}
|
|
else
|
|
{
|
|
BOOL fSetSecurity = FALSE;
|
|
HANDLE hFindFile = INVALID_HANDLE_VALUE;
|
|
WIN32_FIND_DATA FindData;
|
|
|
|
hFindFile = FindFirstFile( szQuorumFileName, &FindData );
|
|
|
|
if ( hFindFile == INVALID_HANDLE_VALUE )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: FindFirstFile on path %1!ws! failed, Error=%2!d! !!!\n",
|
|
szQuorumFileName,
|
|
dwError);
|
|
if ( dwError == ERROR_PATH_NOT_FOUND )
|
|
{
|
|
fSetSecurity = TRUE;
|
|
}
|
|
} else
|
|
{
|
|
FindClose( hFindFile );
|
|
}
|
|
|
|
//if the directory doesnt exist create it
|
|
dwError = ClRtlCreateDirectory(szQuorumFileName);
|
|
if (dwError != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_CRITICAL,
|
|
"[DM] DmpQuoObjNotifyCb: Failed to open quorum file: %1!ws!, error=0x%2!08lx!\r\n",
|
|
szQuorumFileName,
|
|
dwError);
|
|
|
|
CL_UNEXPECTED_ERROR(dwError);
|
|
CsInconsistencyHalt(dwError);
|
|
}
|
|
|
|
if ( fSetSecurity == TRUE )
|
|
{
|
|
HANDLE hFile;
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: Attempting to set security on directory %1!ws!...\r\n",
|
|
szQuorumFileName);
|
|
|
|
//
|
|
// Open the newly created directory object with rights to modify DACL
|
|
// in the object's SD.
|
|
//
|
|
hFile = CreateFile( szQuorumFileName,
|
|
GENERIC_READ | WRITE_DAC | READ_CONTROL, // for setting DACL
|
|
0,
|
|
NULL,
|
|
OPEN_EXISTING,
|
|
FILE_FLAG_BACKUP_SEMANTICS, // for directory open
|
|
NULL );
|
|
|
|
if ( hFile == INVALID_HANDLE_VALUE )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_CRITICAL,
|
|
"[DM] DmpQuoObjNotifyCb: Failed to open directory %1!ws!, Status=%2!u!...\r\n",
|
|
szQuorumFileName,
|
|
dwError);
|
|
CL_LOGFAILURE( dwError );
|
|
CsInconsistencyHalt( dwError );
|
|
}
|
|
|
|
//
|
|
// Set DACL on the file handle object granting full rights only to admin
|
|
// and owner.
|
|
//
|
|
dwError = ClRtlSetObjSecurityInfo( hFile,
|
|
SE_FILE_OBJECT,
|
|
GENERIC_ALL, // for Admins
|
|
GENERIC_ALL, // for Owner
|
|
0 ); // for Everyone
|
|
|
|
CloseHandle( hFile );
|
|
|
|
if ( dwError != ERROR_SUCCESS )
|
|
{
|
|
ClRtlLogPrint(LOG_CRITICAL,
|
|
"[DM] DmpQuoObjNotifyCb: ClRtlSetObjSecurityInfo failed for file %1!ws!, Status=%2!u!\r\n",
|
|
szQuorumFileName,
|
|
dwError);
|
|
CL_LOGFAILURE( dwError );
|
|
CsInconsistencyHalt( dwError );
|
|
}
|
|
}
|
|
|
|
DmGetQuorumLogMaxSize(&dwMaxQuoLogSize);
|
|
|
|
// If the resource monitor dies and comes back up, this can happen
|
|
if (ghQuoLog != NULL)
|
|
{
|
|
LogClose(ghQuoLog);
|
|
if (gbIsQuoLoggingOn) gbNeedToCheckPoint = TRUE;
|
|
}
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 10/16/98
|
|
//
|
|
// Check whether you need to restore the database from a
|
|
// user-supplied backup directory to the quorum disk. This
|
|
// restore operation is done only once when the Dm has
|
|
// not been fully initialized. Note that this function
|
|
// is called whenever the state of the quorum resource
|
|
// changes but the restore operation is only done once.
|
|
//
|
|
if ( ( gbDmInited == FALSE ) &&
|
|
( CsDatabaseRestore == TRUE ) )
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: Beginning DB restoration from %1!ws!...\r\n",
|
|
CsDatabaseRestorePath);
|
|
if ( ( dwError = DmpRestoreClusterDatabase ( szQuorumFileName ) )
|
|
!= ERROR_SUCCESS )
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpQuoObjNotifyCb: DB restore operation from %1!ws! failed! Error=0x%2!08lx!\r\n",
|
|
CsDatabaseRestorePath,
|
|
dwError);
|
|
CL_LOGFAILURE( dwError );
|
|
CsDatabaseRestore = FALSE;
|
|
CsInconsistencyHalt( dwError );
|
|
}
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: DB restoration from %1!ws! successful...\r\n",
|
|
CsDatabaseRestorePath);
|
|
CL_LOGCLUSINFO( SERVICE_CLUSTER_DATABASE_RESTORE_SUCCESSFUL );
|
|
}
|
|
|
|
lstrcat(szQuorumFileName, cszQuoFileName);
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: the name of the quorum file is %1!ls!\r\n",
|
|
szQuorumFileName);
|
|
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 12/4/99
|
|
//
|
|
// If the quorum log file is found to be missing or corrupt,
|
|
// reset it only under the following conditions, else
|
|
// fail the log creation and halt the node.
|
|
//
|
|
// (1) A freshly formed cluster,
|
|
// (2) The user has chosen to reset the log since the user
|
|
// does not have a backup.
|
|
// (3) After the quorum resource has successfully come
|
|
// online on this node and the DM has been initialized
|
|
// successfully. This is because the sanity of the
|
|
// quorum log file has already been verified at
|
|
// initialization and the chances of the quorum log
|
|
// missing or getting corrputed after that are not
|
|
// so high (due to it being held open by the cluster
|
|
// service) and so it is not worth halting the node
|
|
// during run-time.
|
|
//
|
|
if ((CsFirstRun && !CsUpgrade) ||
|
|
(CsResetQuorumLog) ||
|
|
(gbDmInited == TRUE))
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: Will try to reset Quorum log if file not found or if corrupt\r\n");
|
|
bForceReset = TRUE;
|
|
}
|
|
// open the log file
|
|
ghQuoLog = LogCreate(szQuorumFileName, dwMaxQuoLogSize,
|
|
(PLOG_GETCHECKPOINT_CALLBACK)DmpGetSnapShotCb, NULL,
|
|
bForceReset, &FirstLsn);
|
|
|
|
if (!ghQuoLog)
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpQuoObjNotifyCb: Quorum log could not be opened, error = 0x%1!08lx!\r\n",
|
|
dwError);
|
|
CL_LOGFAILURE(dwError);
|
|
CsInconsistencyHalt(ERROR_QUORUMLOG_OPEN_FAILED);
|
|
}
|
|
else
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: Quorum log opened\r\n");
|
|
}
|
|
if (gbNeedToCheckPoint && ghQuoLog)
|
|
{
|
|
//take a checkpoint and set the flag to FALSE.
|
|
gbNeedToCheckPoint = FALSE;
|
|
//get a checkpoint database
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb - taking a checkpoint\r\n");
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 6/3/99
|
|
//
|
|
// Make sure the gLockDmpRoot is held before LogCheckPoint is called
|
|
// so as to maintain the ordering between this lock and the log lock.
|
|
//
|
|
ACQUIRE_SHARED_LOCK(gLockDmpRoot);
|
|
|
|
dwError = LogCheckPoint(ghQuoLog, TRUE, NULL, 0);
|
|
|
|
RELEASE_LOCK(gLockDmpRoot);
|
|
|
|
if (dwError != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_CRITICAL,
|
|
"[DM] DmpEventHandler - Failed to take a checkpoint in the log file, error = 0x%1!08lx!\r\n",
|
|
dwError);
|
|
CL_UNEXPECTED_ERROR(dwError);
|
|
CsInconsistencyHalt(dwError);
|
|
}
|
|
|
|
}
|
|
//if the checkpoint timer doesnt already exist
|
|
//check if the timer has already been created - we might
|
|
// get two post online notifications
|
|
//and dont cause a timer leak
|
|
if (!ghCheckpointTimer)
|
|
{
|
|
ghCheckpointTimer = CreateWaitableTimer(NULL, FALSE, NULL);
|
|
|
|
if (!ghCheckpointTimer)
|
|
{
|
|
CL_UNEXPECTED_ERROR(dwError = GetLastError());
|
|
}
|
|
else
|
|
{
|
|
|
|
DWORD dwCheckpointInterval;
|
|
|
|
dwError = DmpGetCheckpointInterval(&dwCheckpointInterval);
|
|
CL_ASSERT(dwError == ERROR_SUCCESS);
|
|
|
|
//add a timer to take periodic checkpoints
|
|
AddTimerActivity(ghCheckpointTimer, dwCheckpointInterval,
|
|
1, DmpCheckpointTimerCb, &ghQuoLog);
|
|
}
|
|
}
|
|
}
|
|
//SS:completion of hack, revert to enabling pop-ups
|
|
CurrentTeb->HardErrorsAreDisabled = OldHardErrorValue;
|
|
|
|
}
|
|
if (ghQuoLogOpenEvent)
|
|
{
|
|
//this is the first notification after the form
|
|
//allow the initialization to continue after rolling
|
|
//back the changes
|
|
SetEvent(ghQuoLogOpenEvent);
|
|
}
|
|
break;
|
|
|
|
|
|
case NOTIFY_RESOURCE_FAILED:
|
|
case NOTIFY_RESOURCE_PREOFFLINE:
|
|
case NOTIFY_RESOURCE_OFFLINEPENDING:
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpQuoObjNotifyCb: Quorum resource offline/offlinepending/preoffline\r\n");
|
|
gbIsQuoResOnline = FALSE;
|
|
if (ghQuoLog)
|
|
{
|
|
//stop the checkpoint timer
|
|
if (ghCheckpointTimer)
|
|
{
|
|
RemoveTimerActivity(ghCheckpointTimer);
|
|
ghCheckpointTimer = NULL;
|
|
}
|
|
LogClose(ghQuoLog);
|
|
ghQuoLog = NULL;
|
|
//dont try and log after this
|
|
gbIsQuoLoggingOn = FALSE;
|
|
}
|
|
if (ghQuoLogOpenEvent)
|
|
{
|
|
//this is the first notification after the form
|
|
//allow the initialization to continue after rolling
|
|
//back the changes
|
|
SetEvent(ghQuoLogOpenEvent);
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
}
|
|
|
|
/****
|
|
@func DWORD | DmpHookEventHandler| This hooks a callback to be invoked whenever
|
|
the state of the quorum resource changes.
|
|
|
|
@rdesc Returns a result code. ERROR_SUCCESS on success.
|
|
|
|
@comm This is used to monitor the state of nodes and turn quorum logging on or off.
|
|
@xref
|
|
****/
|
|
DWORD DmpHookEventHandler()
|
|
{
|
|
DWORD dwError;
|
|
|
|
dwError = EpRegisterEventHandler(CLUSTER_EVENT_ALL,DmpEventHandler);
|
|
if (dwError != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmHookEventHandler: EpRegisterEventHandler failed, error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
CL_UNEXPECTED_ERROR( dwError );
|
|
}
|
|
|
|
return(dwError);
|
|
}
|
|
|
|
|
|
|
|
/****
|
|
@func DWORD | DmpEventHandler| This routine handles events for the Cluster
|
|
Database Manager.
|
|
|
|
@parm CLUSTER_EVENT | Event | The event to be processed. Only one event at a time.
|
|
If the event is not handled, return ERROR_SUCCESS.
|
|
|
|
@parm PVOID| pContext | A pointer to context associated with the particular event.
|
|
|
|
@rdesc Returns ERROR_SUCCESS else a Win32 error code on other errors.
|
|
|
|
@comm This is used to monitor the state of nodes and turn quorum logging on or off.
|
|
@xref
|
|
****/
|
|
DWORD WINAPI DmpEventHandler(
|
|
IN CLUSTER_EVENT Event,
|
|
IN PVOID pContext
|
|
)
|
|
{
|
|
DWORD dwError=ERROR_SUCCESS;
|
|
BOOL bAreAllNodesUp;
|
|
|
|
switch ( Event ) {
|
|
case CLUSTER_EVENT_NODE_UP:
|
|
bAreAllNodesUp = TRUE;
|
|
if ((dwError = OmEnumObjects(ObjectTypeNode, DmpNodeObjEnumCb, &bAreAllNodesUp, NULL))
|
|
!= ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM]DmpEventHandler : OmEnumObjects returned, error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
|
|
}
|
|
else
|
|
{
|
|
if (bAreAllNodesUp)
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpEventHandler - node is up, turning quorum logging off\r\n");
|
|
|
|
gbIsQuoLoggingOn = FALSE;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case CLUSTER_EVENT_NODE_DOWN:
|
|
if (!gbIsQuoLoggingOn)
|
|
{
|
|
HANDLE hThread = NULL;
|
|
DWORD dwThreadId;
|
|
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 7/23/99
|
|
//
|
|
// Create a new thread to handle the checkpointing on a
|
|
// node down. This is necessary since we don't want the
|
|
// DM node down handler to be blocked in any fashion. If
|
|
// it is blocked since FmCheckQuorumState couldn't get the
|
|
// quorum group lock and some other thread got the group
|
|
// lock and is waiting for the GUM lock, then we have
|
|
// an immediate deadlock. Only after this node down
|
|
// handler finishes, any subsequent future node down
|
|
// processing can be started.
|
|
//
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpEventHandler - Node is down, turn quorum logging on...\r\n");
|
|
|
|
gbIsQuoLoggingOn = TRUE;
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpEventHandler - Create thread to handle node down event...\r\n");
|
|
|
|
hThread = CreateThread( NULL,
|
|
0,
|
|
DmpHandleNodeDownEvent,
|
|
NULL,
|
|
0,
|
|
&dwThreadId );
|
|
|
|
if ( hThread == NULL )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_CRITICAL,
|
|
"[DM] DmpEventHandler - Unable to create thread to handle node down event. Error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
CsInconsistencyHalt( dwError );
|
|
}
|
|
|
|
CloseHandle( hThread );
|
|
}
|
|
|
|
break;
|
|
|
|
case CLUSTER_EVENT_NODE_CHANGE:
|
|
break;
|
|
|
|
case CLUSTER_EVENT_NODE_ADDED:
|
|
break;
|
|
|
|
case CLUSTER_EVENT_NODE_DELETED:
|
|
break;
|
|
|
|
case CLUSTER_EVENT_NODE_JOIN:
|
|
break;
|
|
|
|
|
|
}
|
|
return(dwError);
|
|
|
|
} // DmpEventHandler
|
|
|
|
|
|
/****
|
|
@func DWORD | DmpNodeObjEnumCb| This is a callback that is called when node
|
|
objects are enumberate by the dm.
|
|
|
|
@parm PVOID | pContext| A pointer to a DMLOGRECORD structure.
|
|
@parm PVOID | pObject| A pointer to quorum resource object.
|
|
@parm DWORD | dwNotification| A pointer to a DMLOGRECORD structure.
|
|
|
|
@rdesc Returns a result code. ERROR_SUCCESS on success.
|
|
|
|
@xref
|
|
****/
|
|
BOOL DmpNodeObjEnumCb(IN BOOL *pbAreAllNodesUp, IN PVOID pContext2,
|
|
IN PVOID pNode, IN LPCWSTR szName)
|
|
{
|
|
|
|
if ((NmGetNodeState(pNode) != ClusterNodeUp) &&
|
|
(NmGetNodeState(pNode) != ClusterNodePaused))
|
|
*pbAreAllNodesUp = FALSE;
|
|
//if any of the nodes is down fall out
|
|
return(*pbAreAllNodesUp);
|
|
}
|
|
|
|
/****
|
|
@func BOOL | DmpGetSnapShotCb| This callback is invoked when the logger
|
|
is asked to take a checkpoint record for the cluster registry.
|
|
|
|
@parm PVOID| pContext | The checkpoint context passed into LogCreate.
|
|
|
|
@parm LPWSTR | szChkPtFile | The name of the file in which to take a checkpoint.
|
|
|
|
@parm LPDWORD | pdwChkPtSequence | The sequence number related with this
|
|
checkpoint is returned in this.
|
|
|
|
@rdesc Returns a result code. ERROR_SUCCESS on success. If the file corresponding
|
|
to this checkpoint already exists, it will return ERROR_ALREADY_EXISTS and
|
|
szChkPtFile will be set to the name of the file.
|
|
|
|
@comm LogCheckPoint() calls this function when the log manager is asked to checkpoint the
|
|
dm database.
|
|
|
|
@xref
|
|
****/
|
|
|
|
DWORD WINAPI DmpGetSnapShotCb(IN LPCWSTR szPathName, IN PVOID pContext,
|
|
OUT LPWSTR szChkPtFile, OUT LPDWORD pdwChkPtSequence)
|
|
{
|
|
DWORD dwError = ERROR_SUCCESS;
|
|
WCHAR szFilePrefix[MAX_PATH] = L"chkpt";
|
|
WCHAR szTempFile[MAX_PATH] = L"";
|
|
|
|
ACQUIRE_SHARED_LOCK( gLockDmpRoot );
|
|
|
|
szChkPtFile[0] = L'\0';
|
|
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 5/1/2000
|
|
//
|
|
// Checkpoint file name is based on registry sequence number. It is possible that two
|
|
// or more consecutive calls to this function to take checkpoints may read the same
|
|
// registry sequence number. Thus, if DmGetDatabase fails for some reason, it is possible
|
|
// that an existing checkpoint file will get corrupted. Thus, even though the quorum log
|
|
// marks a 'start checkpoint record' and an 'end checkpoint record', it could turn out
|
|
// to be useless if this function manages to corrupt an existing checkpoint file. To solve
|
|
// this problem, we first generate a temp file, take a cluster hive snapshot as this temp
|
|
// file, then atomically move the temp file to the final checkpoint file using the MoveFileEx
|
|
// function.
|
|
//
|
|
|
|
//
|
|
// Create a new unique temp file name
|
|
//
|
|
if ( !GetTempFileNameW( szPathName, szFilePrefix, 0, szTempFile ) )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[LM] DmpGetSnapShotCb: Failed to generate a temp file name, PathName=%1!ls!, FilePrefix=%2!ls!, Error=0x%3!08lx!\r\n",
|
|
szPathName, szFilePrefix, dwError);
|
|
goto FnExit;
|
|
}
|
|
|
|
dwError = DmCommitRegistry(); // Ensure up-to-date snapshot
|
|
|
|
if ( dwError != ERROR_SUCCESS )
|
|
{
|
|
ClRtlLogPrint(LOG_CRITICAL,
|
|
"[LM] DmpGetSnapShotCb: DmCommitRegistry() failed, Error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
goto FnExit;
|
|
}
|
|
|
|
dwError = DmGetDatabase( DmpRoot, szTempFile );
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpGetSnapShotCb: DmpGetDatabase returned 0x%1!08lx!\r\n",
|
|
dwError);
|
|
|
|
if ( dwError == ERROR_SUCCESS )
|
|
{
|
|
*pdwChkPtSequence = DmpGetRegistrySequence();
|
|
|
|
//
|
|
// Create a checkpoint file name based on the registry sequence number
|
|
//
|
|
if ( !GetTempFileNameW( szPathName, szFilePrefix, *pdwChkPtSequence, szChkPtFile ) )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[LM] DmpGetSnapShotCb: Failed to generate a chkpt file name, PathName=%1!ls!, FilePrefix=%2!ls!, Error=0x%3!08lx!\r\n",
|
|
szPathName, szFilePrefix, dwError);
|
|
//
|
|
// Reset the file name to null, as this information will be used to determine
|
|
// if the checkpoint was taken
|
|
//
|
|
szChkPtFile[0] = L'\0';
|
|
goto FnExit;
|
|
}
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[LM] DmpGetSnapshotCb: Checkpoint file name=%1!ls! Seq#=%2!d!\r\n",
|
|
szChkPtFile, *pdwChkPtSequence);
|
|
|
|
if ( !MoveFileEx( szTempFile, szChkPtFile, MOVEFILE_REPLACE_EXISTING | MOVEFILE_WRITE_THROUGH ) )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[LM] DmpGetSnapShotCb: Failed to move the temp file to checkpoint file, TempFileName=%1!ls!, ChkPtFileName=%2!ls!, Error=0x%3!08lx!\r\n",
|
|
szTempFile, szChkPtFile, dwError);
|
|
//
|
|
// Reset the file name to null, as this information will be used to determine
|
|
// if the checkpoint was taken
|
|
//
|
|
szChkPtFile[0] = L'\0';
|
|
goto FnExit;
|
|
}
|
|
}
|
|
|
|
FnExit:
|
|
RELEASE_LOCK(gLockDmpRoot);
|
|
|
|
if ( dwError != ERROR_SUCCESS )
|
|
{
|
|
DeleteFileW( szTempFile );
|
|
}
|
|
return ( dwError );
|
|
}
|
|
|
|
/****
|
|
@func BOOL WINAPI | DmpLogApplyChangesCb| This callback walks through the records in
|
|
the quorum logs and applies changes to the local database.
|
|
|
|
@parm PVOID | pContext | The event to be processed. Only one event at a time.
|
|
If the event is not handled, return ERROR_SUCCESS.
|
|
|
|
@parm LSN | Lsn | Lsn of the record.
|
|
|
|
@parm RMID | Resource | The resource id of the entity that logged this record.
|
|
|
|
@parm RMTYPE | ResourceType | The record type that is specific to the resource id.
|
|
|
|
@parm TRID | Transaction | The sequence number of the transaction.
|
|
|
|
@parm const PVOID | pLogData | A pointer to the record data.
|
|
|
|
@parm DWORD | DataLength | The length of the data in bytes.
|
|
|
|
@rdesc Returns TRUE to continue scan else returns FALSE.
|
|
|
|
@comm This function is called at initialization when a cluster is being formed to apply
|
|
transactions from the quorum log to the local cluster database.
|
|
@xref
|
|
****/
|
|
|
|
BOOL WINAPI DmpLogApplyChangesCb(
|
|
IN PVOID pContext,
|
|
IN LSN Lsn,
|
|
IN RMID Resource,
|
|
IN RMTYPE ResourceType,
|
|
IN TRID Transaction,
|
|
IN TRTYPE TransactionType,
|
|
IN const PVOID pLogData,
|
|
IN DWORD DataLength)
|
|
{
|
|
|
|
DWORD Status;
|
|
PDM_LOGSCAN_CONTEXT pDmAppliedChangeContext = (PDM_LOGSCAN_CONTEXT) pContext;
|
|
TRSTATE trXsactionState;
|
|
BOOL bRet = TRUE;
|
|
|
|
CL_ASSERT(pDmAppliedChangeContext);
|
|
//if the resource id is not the same as dm..ignore..go to the next one
|
|
|
|
switch(TransactionType)
|
|
{
|
|
case TTStartXsaction:
|
|
Status = LogFindXsactionState(ghQuoLog, Lsn, Transaction, &trXsactionState);
|
|
if (Status != ERROR_SUCCESS)
|
|
{
|
|
//there was an error
|
|
ClRtlLogPrint(LOG_NOISE, "[DM] DmpLogApplyChangesCb ::LogFindXsaction failed, error=0x%1!08lx!\r\n",
|
|
Status);
|
|
//assume unknown state
|
|
CL_LOGFAILURE(Status);
|
|
trXsactionState = XsactionUnknown;
|
|
}
|
|
//if the transaction is successful apply it, else continue
|
|
if (trXsactionState == XsactionCommitted)
|
|
{
|
|
Status = LogScanXsaction(ghQuoLog, Lsn, Transaction, DmpApplyTransactionCb,
|
|
NULL);
|
|
if (Status != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpLogApplyChangesCb :LogScanTransaction for committed record failed, error=0x%1!08lx!\r\n",
|
|
Status);
|
|
bRet = FALSE;
|
|
CL_LOGFAILURE(Status);
|
|
break;
|
|
}
|
|
pDmAppliedChangeContext->dwSequence = Transaction;
|
|
}
|
|
else
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE, "[DM] TransactionState = %1!u!\r\n",
|
|
trXsactionState);
|
|
}
|
|
break;
|
|
|
|
|
|
case TTCompleteXsaction:
|
|
bRet = DmpApplyTransactionCb(NULL, Lsn, Resource, ResourceType,
|
|
Transaction, pLogData, DataLength);
|
|
pDmAppliedChangeContext->dwSequence = Transaction;
|
|
break;
|
|
|
|
default:
|
|
CL_ASSERT(FALSE);
|
|
|
|
}
|
|
|
|
return(bRet);
|
|
|
|
}
|
|
|
|
|
|
BOOL WINAPI DmpApplyTransactionCb(
|
|
IN PVOID pContext,
|
|
IN LSN Lsn,
|
|
IN RMID Resource,
|
|
IN RMTYPE ResourceType,
|
|
IN TRID TransactionId,
|
|
IN const PVOID pLogData,
|
|
IN DWORD dwDataLength)
|
|
{
|
|
DWORD Status;
|
|
|
|
switch(ResourceType)
|
|
{
|
|
|
|
case DmUpdateCreateKey:
|
|
ClRtlLogPrint(LOG_NOISE,"[DM] DmpLogScanCb::DmUpdateCreateKey\n");
|
|
//SS: we dont care at this point as to where the update originated
|
|
Status = DmpUpdateCreateKey(FALSE,
|
|
GET_ARG(pLogData,0),
|
|
GET_ARG(pLogData,1),
|
|
GET_ARG(pLogData,2));
|
|
break;
|
|
|
|
case DmUpdateDeleteKey:
|
|
ClRtlLogPrint(LOG_NOISE,"[DM] DmUpdateDeleteKey \n");
|
|
Status = DmpUpdateDeleteKey(FALSE,
|
|
(PDM_DELETE_KEY_UPDATE)((PBYTE)pLogData));
|
|
break;
|
|
|
|
case DmUpdateSetValue:
|
|
ClRtlLogPrint(LOG_NOISE,"[DM] DmUpdateSetValue \n");
|
|
Status = DmpUpdateSetValue(FALSE,
|
|
(PDM_SET_VALUE_UPDATE)((PBYTE)pLogData));
|
|
break;
|
|
|
|
case DmUpdateDeleteValue:
|
|
ClRtlLogPrint(LOG_NOISE,"[DM] DmUpdateDeleteValue\n");
|
|
Status = DmpUpdateDeleteValue(FALSE,
|
|
(PDM_DELETE_VALUE_UPDATE)((PBYTE)pLogData));
|
|
break;
|
|
|
|
case DmUpdateJoin:
|
|
ClRtlLogPrint(LOG_UNUSUAL,"[DM] DmUpdateJoin\n");
|
|
Status = ERROR_SUCCESS;
|
|
break;
|
|
|
|
default:
|
|
ClRtlLogPrint(LOG_UNUSUAL,"[DM] DmpLogScanCb:uType = %1!u!\r\n",
|
|
ResourceType);
|
|
Status = ERROR_INVALID_DATA;
|
|
CL_UNEXPECTED_ERROR(ERROR_INVALID_DATA);
|
|
break;
|
|
|
|
}
|
|
return(TRUE);
|
|
}
|
|
|
|
/****
|
|
@func WORD| DmpLogCheckPtCb| A callback fn for DM
|
|
to take a checkpoint to the log if the quorum
|
|
resource is online on this node.
|
|
|
|
@rdesc Returns ERROR_SUCCESS for success, else returns the error code.
|
|
|
|
@comm This callback is called when the quorum resource
|
|
is online on this node. Since the quorum resource
|
|
synchronous callbacks are called before the resource
|
|
state changes are propagated, if the quorum is online
|
|
the log must be open.
|
|
|
|
@xref
|
|
****/
|
|
void DmpLogCheckPointCb()
|
|
{
|
|
DWORD dwError;
|
|
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 9/22/99
|
|
//
|
|
// If the quorum logging switch is off, don't do anything.
|
|
//
|
|
if (CsNoQuorumLogging) return;
|
|
|
|
//once it is online the log file should be open
|
|
//SS:BUGS: should we log something in the eventlog
|
|
if (ghQuoLog)
|
|
{
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 6/3/99
|
|
//
|
|
// Make sure the gLockDmpRoot is held before LogCheckPoint is called
|
|
// so as to maintain the ordering between this lock and the log lock.
|
|
//
|
|
ACQUIRE_SHARED_LOCK(gLockDmpRoot);
|
|
|
|
//get a checkpoint database
|
|
dwError = LogCheckPoint(ghQuoLog, TRUE, NULL, 0);
|
|
|
|
RELEASE_LOCK(gLockDmpRoot);
|
|
|
|
if (dwError != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_CRITICAL,
|
|
"[DM] DmpLogCheckPointCb - Failed to take a checkpoint in the log file, error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
CL_UNEXPECTED_ERROR(dwError);
|
|
}
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpLogCheckPointCb - taken checkpoint\r\n");
|
|
}
|
|
else
|
|
{
|
|
CsInconsistencyHalt(ERROR_QUORUMLOG_OPEN_FAILED);
|
|
}
|
|
|
|
|
|
}
|
|
|
|
/****
|
|
@func WORD| DmGetQuorumLogPath| Reads the quorum log file path configured in
|
|
the registry during setup.
|
|
|
|
@parm LPWSTR | szQuorumLogPath | A pointer to a wide string of size MAX_PATH.
|
|
@parm DWORD | dwSize | The size of szQuorumLogPath in bytes.
|
|
|
|
@rdesc Returns ERROR_SUCCESS for success, else returns the error code.
|
|
|
|
@comm If the quorum resource is not cabaple of logging this should not be set.
|
|
@xref
|
|
****/
|
|
DWORD DmGetQuorumLogPath(LPWSTR szQuorumLogPath, DWORD dwSize)
|
|
{
|
|
DWORD Status;
|
|
|
|
Status = DmQuerySz( DmQuorumKey,
|
|
cszPath,
|
|
&szQuorumLogPath,
|
|
&dwSize,
|
|
&dwSize);
|
|
|
|
if (Status != ERROR_SUCCESS) {
|
|
ClRtlLogPrint(LOG_UNUSUAL, "[DM] DmGetQuorumLogPath failed, error=%1!u!\n", Status);
|
|
goto FnExit;
|
|
}
|
|
|
|
FnExit:
|
|
return(Status);
|
|
}
|
|
|
|
/****
|
|
@func WORD| DmpGetCheckpointInterval| Reads the checkpoint interval
|
|
from the registry, else returns the default.
|
|
|
|
@parm LPDWORD | pdwCheckpointInterval | A pointer to DWORD where
|
|
the checkpoint interval, in secs, is returned.
|
|
|
|
@rdesc Returns ERROR_SUCCESS for success, else returns the error code.
|
|
|
|
@comm The default checkpoint interval is 4 hours. The registry must be configured
|
|
in units of hours.
|
|
@xref
|
|
****/
|
|
DWORD DmpGetCheckpointInterval(
|
|
OUT LPDWORD pdwCheckpointInterval)
|
|
{
|
|
DWORD dwDefCheckpointInterval = DEFAULT_CHECKPOINT_INTERVAL;
|
|
DWORD dwStatus = ERROR_SUCCESS;
|
|
|
|
dwStatus = DmQueryDword( DmQuorumKey,
|
|
CLUSREG_NAME_CHECKPOINT_INTERVAL,
|
|
pdwCheckpointInterval,
|
|
&dwDefCheckpointInterval);
|
|
|
|
if (dwStatus != ERROR_SUCCESS) {
|
|
ClRtlLogPrint(LOG_UNUSUAL, "[DM] DmGetCheckpointInterval Failed, error=%1!u!\n",
|
|
dwStatus);
|
|
goto FnExit;
|
|
}
|
|
//the checkpoint interval cant be less than 1 hour or more than 1 day
|
|
if ((*pdwCheckpointInterval < 1) || (*pdwCheckpointInterval>24))
|
|
*pdwCheckpointInterval = DEFAULT_CHECKPOINT_INTERVAL;
|
|
|
|
//convert to msecs
|
|
*pdwCheckpointInterval = *pdwCheckpointInterval * 60 * 60 * 1000;
|
|
|
|
FnExit:
|
|
return(dwStatus);
|
|
}
|
|
|
|
|
|
/****
|
|
@func WORD| DmGetQuorumLogMaxSize| Reads the quorum log file max size.
|
|
|
|
@parm LPDWORD | pdwMaxLogSize| A pointer to a dword containing the size.
|
|
|
|
@rdesc Returns ERROR_SUCCESS for success, else returns the error code.
|
|
|
|
@comm If the quorum resource is not cabaple of logging this should not be set.
|
|
@xref
|
|
****/
|
|
DWORD DmGetQuorumLogMaxSize(LPDWORD pdwMaxLogSize)
|
|
{
|
|
DWORD Status;
|
|
DWORD dwDefaultLogMaxSize = CLUSTER_QUORUM_DEFAULT_MAX_LOG_SIZE;
|
|
|
|
Status = DmQueryDword( DmQuorumKey,
|
|
cszMaxQuorumLogSize,
|
|
pdwMaxLogSize,
|
|
&dwDefaultLogMaxSize);
|
|
|
|
if (Status != ERROR_SUCCESS) {
|
|
ClRtlLogPrint(LOG_UNUSUAL, "[DM] DmGetQuorumLogMaxSize failed, error=%1!u!\n",Status);
|
|
}
|
|
|
|
return(Status);
|
|
}
|
|
|
|
|
|
/****
|
|
@func DWORD | DmpCheckDiskSpace| Called to check for the disk space
|
|
on the quorum resource after it is brought online and logs are rolled up.
|
|
|
|
@rdesc ERROR_SUCCESS if successful. Win32 error code if something horrible happened.
|
|
|
|
@comm This function checks if there is enough disk space and sets up
|
|
a periodic timer to monitor the disk space.
|
|
|
|
@xref <f DmpDiskManage>
|
|
****/
|
|
DWORD DmpCheckDiskSpace()
|
|
{
|
|
DWORD dwError = ERROR_SUCCESS;
|
|
WCHAR szQuoLogPathName[MAX_PATH];
|
|
ULARGE_INTEGER liNumTotalBytes;
|
|
ULARGE_INTEGER liNumFreeBytes;
|
|
|
|
//if you own the quorum resource, try to check the size
|
|
if (gpQuoResource && AMIOWNEROFQUORES(gpQuoResource) && gbIsQuoResOnline)
|
|
{
|
|
//get the path
|
|
if ((dwError = DmGetQuorumLogPath(szQuoLogPathName, sizeof(szQuoLogPathName)))
|
|
!= ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpCheckDiskSpace: Quorum log file is not configured, error=%1!u!\r\n",
|
|
dwError);
|
|
//log something in the event log
|
|
CL_LOGFAILURE(dwError);
|
|
goto FnExit;
|
|
}
|
|
|
|
//check the minimum space on the quorum disk
|
|
if (!GetDiskFreeSpaceEx(szQuoLogPathName, &liNumFreeBytes, &liNumTotalBytes,
|
|
NULL))
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpCheckDiskSpace: GetDiskFreeSpace returned error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
goto FnExit;
|
|
}
|
|
|
|
//if not available, log something in the event log and bail out
|
|
if ((liNumFreeBytes.HighPart == 0) &&
|
|
(liNumFreeBytes.LowPart < DISKSPACE_INIT_MINREQUIRED))
|
|
{
|
|
CL_LOGCLUSWARNING(LM_DISKSPACE_HIGH_WATERMARK);
|
|
dwError = ERROR_CLUSTERLOG_NOT_ENOUGH_SPACE;
|
|
goto FnExit;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
FnExit:
|
|
return(dwError);
|
|
}
|
|
|
|
|
|
/****
|
|
@func DWORD | DmpDiskManage | This is the callback registered to perform
|
|
periodic disk check functions on the quorum resource.
|
|
|
|
@comm If the disk space has dipped below the lowwatermark, this gracefully
|
|
shuts the cluster service. If the disk space dips below the high
|
|
watermark, it sends an alert to registered recipients.
|
|
|
|
@xref <f DmpCheckDiskSpace>
|
|
****/
|
|
void WINAPI DmpDiskManage(
|
|
IN HANDLE hTimer,
|
|
IN PVOID pContext)
|
|
{
|
|
DWORD dwError;
|
|
WCHAR szQuoLogPathName[MAX_PATH];
|
|
ULARGE_INTEGER liNumTotalBytes;
|
|
ULARGE_INTEGER liNumFreeBytes;
|
|
static DWORD dwNumWarnings=0;
|
|
|
|
|
|
if (!gpQuoResource || (!AMIOWNEROFQUORES(gpQuoResource)) ||
|
|
(!gbIsQuoResOnline || (CsNoQuorumLogging)))
|
|
{
|
|
//the owner of the quorum resource checks the disk space
|
|
//the quorum disk shouldnt go offline
|
|
//skip checking if no quorum logging is required
|
|
return;
|
|
}
|
|
//get the path
|
|
if ((dwError = DmGetQuorumLogPath(szQuoLogPathName, sizeof(szQuoLogPathName)))
|
|
!= ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpDiskManage: Quorum log file is not configured, error=%1!u!\r\n",
|
|
dwError);
|
|
//log something in the event log
|
|
CL_UNEXPECTED_ERROR(dwError);
|
|
goto FnExit;
|
|
}
|
|
|
|
//check the minimum space on the quorum disk
|
|
if (!GetDiskFreeSpaceEx(szQuoLogPathName, &liNumFreeBytes, &liNumTotalBytes,
|
|
NULL))
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpDiskManage: GetDiskFreeSpace returned error=0x%1!08lx!\r\n",
|
|
dwError);
|
|
CL_LOGFAILURE(dwError);
|
|
goto FnExit;
|
|
}
|
|
|
|
if ((liNumFreeBytes.HighPart == 0) &&
|
|
(liNumFreeBytes.LowPart < DISKSPACE_LOW_WATERMARK))
|
|
{
|
|
//reached the low water mark
|
|
dwNumWarnings++;
|
|
//ss: we can control the rate at which we put things in the
|
|
//event log but once every five minutes is not bad.
|
|
//ss: post an event ???
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpDiskManage: GetDiskFreeSpace - Not enough disk space, Avail=0x%1!08lx!\r\n",
|
|
liNumFreeBytes.LowPart);
|
|
CL_LOGCLUSWARNING(LM_DISKSPACE_LOW_WATERMARK);
|
|
}
|
|
else
|
|
{
|
|
gbIsQuoResEnoughSpace = TRUE;
|
|
dwNumWarnings = 0;
|
|
}
|
|
FnExit:
|
|
return;
|
|
}
|
|
|
|
|
|
/****
|
|
@func DWORD | DmpCheckpointTimerCb | This is the callback registered to perform
|
|
periodic checkpointing on the quorum log.
|
|
|
|
@parm IN HANDLE| hTimer| The timer associated with checkpointing interval.
|
|
|
|
@parm IN PVOID | pContext | A pointer to the handle for the quorum log file.
|
|
|
|
@comm This helps in backups. If you want to take a cluster backup by making
|
|
a copy of the quorum.log and checkpoint files, then if both nodes have
|
|
been up for a long time both the files can be old. By taking a periodic
|
|
checkpoint we guarantee that they are not more than n hours old.
|
|
|
|
****/
|
|
void WINAPI DmpCheckpointTimerCb(
|
|
IN HANDLE hTimer,
|
|
IN PVOID pContext)
|
|
{
|
|
|
|
HLOG hQuoLog;
|
|
DWORD dwError;
|
|
|
|
hQuoLog = *((HLOG *)pContext);
|
|
|
|
if (hQuoLog && gbDmInited)
|
|
{
|
|
|
|
//get a checkpoint database
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM]DmpCheckpointTimerCb- taking a checkpoint\r\n");
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 6/3/99
|
|
//
|
|
// Make sure the gLockDmpRoot is held before LogCheckPoint is called
|
|
// so as to maintain the ordering between this lock and the log lock.
|
|
//
|
|
ACQUIRE_SHARED_LOCK(gLockDmpRoot);
|
|
|
|
dwError = LogReset(hQuoLog);
|
|
|
|
RELEASE_LOCK(gLockDmpRoot);
|
|
|
|
if (dwError != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_CRITICAL,
|
|
"[DM]DmpCheckpointTimerCb - Failed to reset log, error=%1!u!\r\n",
|
|
dwError);
|
|
CL_UNEXPECTED_ERROR(dwError);
|
|
}
|
|
}
|
|
}
|
|
|
|
/****
|
|
@func DWORD | DmBackupClusterDatabase | Take a fresh checkpoint and
|
|
copy the quorum log and the checkpoint file to the supplied
|
|
path name. This function is called with gQuoLock held.
|
|
|
|
@parm IN LPCWSTR | lpszPathName | The directory path name where the
|
|
files have to be backed up. This path must be visible to the
|
|
node on which the quorum resource is online (i.e., this node
|
|
in this case).
|
|
|
|
@comm This function first takes a fresh checkpoint, updates the quorum
|
|
log file and then copies the two files to a backup area.
|
|
|
|
@rdesc Returns a Win32 error code on failure. ERROR_SUCCESS on success.
|
|
|
|
@xref <f DmpLogCheckpointAndBackup> <f DmpRestoreClusterDatabase>
|
|
****/
|
|
DWORD DmBackupClusterDatabase(
|
|
IN LPCWSTR lpszPathName)
|
|
{
|
|
HANDLE hFindFile = INVALID_HANDLE_VALUE;
|
|
WIN32_FIND_DATA FindData;
|
|
DWORD status = ERROR_SUCCESS;
|
|
LPWSTR szDestPathName = NULL;
|
|
DWORD dwLen;
|
|
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 10/12/98
|
|
//
|
|
dwLen = lstrlenW( lpszPathName );
|
|
|
|
//
|
|
// It is safer to use dynamic memory allocation for user-supplied
|
|
// path since we don't want to put restrictions on the user
|
|
// on the length of the path that can be supplied. However, as
|
|
// far as our own quorum disk path is concerned, it is system-dependent
|
|
// and static memory allocation for that would suffice.
|
|
//
|
|
szDestPathName = (LPWSTR) LocalAlloc ( LMEM_FIXED,
|
|
( dwLen + 5 ) *
|
|
sizeof ( WCHAR ) );
|
|
|
|
if ( szDestPathName == NULL )
|
|
{
|
|
status = GetLastError();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmBackupClusterDatabase: Error %1!d! in allocating memory for %2!ws! !!!\n",
|
|
status,
|
|
lpszPathName);
|
|
CL_LOGFAILURE( status );
|
|
goto FnExit;
|
|
}
|
|
|
|
lstrcpyW( szDestPathName, lpszPathName );
|
|
//
|
|
// If the client-supplied path is not already terminated with '\',
|
|
// then add it.
|
|
//
|
|
if ( szDestPathName [dwLen-1] != L'\\' )
|
|
{
|
|
szDestPathName [dwLen++] = L'\\';
|
|
}
|
|
//
|
|
// Add a wild character at the end to search for any file in the
|
|
// supplied directory
|
|
//
|
|
szDestPathName[dwLen++] = L'*';
|
|
szDestPathName[dwLen] = L'\0';
|
|
|
|
//
|
|
// Find out whether you can access the supplied path by
|
|
// trying to find some file in the directory.
|
|
//
|
|
hFindFile = FindFirstFile( szDestPathName, &FindData );
|
|
if ( hFindFile == INVALID_HANDLE_VALUE )
|
|
{
|
|
status = GetLastError();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmBackupClusterDatabase: Supplied path %1!ws! does not exist, Error=%2!d! !!!\n",
|
|
szDestPathName,
|
|
status);
|
|
goto FnExit;
|
|
}
|
|
//
|
|
// Check whether the log is open. It must be since we already
|
|
// verified that the quorum resource is online on this node and
|
|
// quorum logging is turned on.
|
|
//
|
|
if ( ghQuoLog )
|
|
{
|
|
//
|
|
// Remove the '*' so the same variable can be used.
|
|
//
|
|
szDestPathName [dwLen-1] = L'\0';
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmBackupClusterDatabase: Attempting to take a checkpoint and then backup to %1!ws!..\n",
|
|
szDestPathName);
|
|
|
|
//
|
|
// The gLockDmpRoot needs to be acquired here since otherwise
|
|
// you will get the log lock in the LogCheckPoint( )
|
|
// function and someone else could get the gLockDmpRoot.
|
|
// After you get the log lock, you also try to acquire
|
|
// the gLockDmpRoot in the function DmCommitRegistry.
|
|
// This is a potential deadlock situation and is avoided here.
|
|
//
|
|
ACQUIRE_SHARED_LOCK(gLockDmpRoot);
|
|
status = DmpLogCheckpointAndBackup ( ghQuoLog, szDestPathName );
|
|
RELEASE_LOCK(gLockDmpRoot);
|
|
|
|
if ( status == ERROR_SUCCESS )
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmBackupClusterDatabase: Successfully finished backing up to %1!ws!...\n",
|
|
szDestPathName);
|
|
}
|
|
} else
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmBackupClusterDatabase: Quorum log could not be opened...\r\n");
|
|
status = ERROR_QUORUMLOG_OPEN_FAILED;
|
|
}
|
|
|
|
FnExit:
|
|
if ( hFindFile != INVALID_HANDLE_VALUE )
|
|
{
|
|
FindClose ( hFindFile );
|
|
}
|
|
LocalFree ( szDestPathName );
|
|
return ( status );
|
|
}
|
|
|
|
/****
|
|
@func DWORD | DmpLogCheckpointAndBackup | Takes a checkpoint, updates the
|
|
quorum log and then copies the files to the supplied path. This
|
|
function is called with the gQuoLock and the gLockDmpRoot held.
|
|
|
|
@parm IN HLOG | hLogFile | An identifier for the quorum log file.
|
|
|
|
@parm IN LPWSTR | lpszPathName | The path for storing the quorum log
|
|
file, the recent checkpoint file, and the resource registry
|
|
checkpoint files. This path must be visible from this node.
|
|
|
|
@comm Called by DmpBackupQuorumLog() to take a checkpoint and then
|
|
take a backup of the cluster database including resource
|
|
registry checkpoint files.
|
|
|
|
@rdesc Returns a Win32 error code on failure. ERROR_SUCCESS on success.
|
|
|
|
@xref <f DmBackupClusterDatabase>
|
|
****/
|
|
DWORD DmpLogCheckpointAndBackup(
|
|
IN HLOG hLogFile,
|
|
IN LPWSTR lpszPathName)
|
|
{
|
|
DWORD dwError;
|
|
DWORD dwLen;
|
|
WCHAR szChkPointFilePrefix[MAX_PATH];
|
|
WCHAR szQuoLogPathName[MAX_PATH];
|
|
LPWSTR szDestFileName = NULL;
|
|
WCHAR szSourceFileName[MAX_PATH];
|
|
LPWSTR szDestPathName = NULL;
|
|
LPWSTR lpChkPointFileNameStart;
|
|
LSN Lsn;
|
|
TRID Transaction;
|
|
HANDLE hFile = INVALID_HANDLE_VALUE;
|
|
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 10/12/1998
|
|
//
|
|
|
|
//
|
|
// Initiate a checkpoint process. Allow a log file reset, if necessary.
|
|
//
|
|
if ( ( dwError = LogCheckPoint( hLogFile, TRUE, NULL, 0 ) )
|
|
!= ERROR_SUCCESS )
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::Callback failed to return a checkpoint. Error=%1!u!\r\n",
|
|
dwError);
|
|
CL_LOGFAILURE( dwError );
|
|
LogClose( hLogFile );
|
|
goto FnExit;
|
|
}
|
|
|
|
//
|
|
// Get the name of the most recent checkpoint file
|
|
//
|
|
szChkPointFilePrefix[0] = TEXT('\0');
|
|
if ( ( dwError = LogGetLastChkPoint( hLogFile, szChkPointFilePrefix, &Transaction, &Lsn ) )
|
|
!= ERROR_SUCCESS )
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::No check point found in the log file. Error=%1!u!\r\n",
|
|
dwError);
|
|
CL_LOGFAILURE( dwError );
|
|
LogClose( hLogFile );
|
|
goto FnExit;
|
|
}
|
|
|
|
dwError = DmGetQuorumLogPath( szQuoLogPathName, sizeof( szQuoLogPathName ) );
|
|
if ( dwError != ERROR_SUCCESS )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::DmGetQuorumLogPath failed, Error = %1!d!\r\n",
|
|
dwError);
|
|
CL_LOGFAILURE( dwError );
|
|
goto FnExit;
|
|
}
|
|
|
|
//
|
|
// It is safer to use dynamic memory allocation for user-supplied
|
|
// path since we don't want to put restrictions on the user
|
|
// on the length of the path that can be supplied. However, as
|
|
// far as our own quorum disk path is concerned, it is system-dependent
|
|
// and static memory allocation for that would suffice.
|
|
//
|
|
szDestPathName = (LPWSTR) LocalAlloc ( LMEM_FIXED,
|
|
( lstrlenW ( lpszPathName ) + 1 ) *
|
|
sizeof ( WCHAR ) );
|
|
|
|
if ( szDestPathName == NULL )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpLogCheckpointAndBackup: Error %1!d! in allocating memory for %2!ws! !!!\n",
|
|
dwError,
|
|
lpszPathName);
|
|
CL_LOGFAILURE( dwError );
|
|
goto FnExit;
|
|
}
|
|
|
|
//
|
|
// Get the user-supplied destination path name
|
|
//
|
|
lstrcpyW( szDestPathName, lpszPathName );
|
|
|
|
szDestFileName = (LPWSTR) LocalAlloc ( LMEM_FIXED,
|
|
( lstrlenW ( szDestPathName ) + 1 + LOG_MAX_FILENAME_LENGTH ) *
|
|
sizeof ( WCHAR ) );
|
|
|
|
if ( szDestFileName == NULL )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpLogCheckpointAndBackup: Error %1!d! in allocating memory for chkpt file name !!!\n",
|
|
dwError);
|
|
CL_LOGFAILURE( dwError );
|
|
goto FnExit;
|
|
}
|
|
|
|
//
|
|
// Make an attempt to delete the CLUSBACKUP.DAT file
|
|
//
|
|
lstrcpyW( szDestFileName, szDestPathName );
|
|
lstrcatW( szDestFileName, L"CLUSBACKUP.DAT" );
|
|
//
|
|
// Set the file attribute to normal. Continue even if you
|
|
// fail in this step, but log an error. (Note that you are
|
|
// countering the case in which a destination file with
|
|
// the same name exists in the backup directory already and
|
|
// you are trying to delete it.)
|
|
//
|
|
if ( !SetFileAttributes( szDestFileName, FILE_ATTRIBUTE_NORMAL ) )
|
|
{
|
|
dwError = GetLastError();
|
|
if ( dwError != ERROR_FILE_NOT_FOUND )
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::Error in changing %1!ws! attribute to NORMAL, Error = %2!d!\n",
|
|
szDestFileName,
|
|
dwError);
|
|
}
|
|
}
|
|
|
|
if ( !DeleteFile( szDestFileName ) )
|
|
{
|
|
dwError = GetLastError();
|
|
if ( dwError != ERROR_FILE_NOT_FOUND )
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::CLUSBACKUP.DAT exists, but can't delete it, Error = %1!d!\n",
|
|
dwError);
|
|
CL_LOGFAILURE( dwError );
|
|
goto FnExit;
|
|
}
|
|
}
|
|
//
|
|
// Just get the checkpoint file name without any path added.
|
|
// Note that szQuoLogPathName includes the '\'
|
|
//
|
|
dwLen = lstrlenW ( szQuoLogPathName );
|
|
lpChkPointFileNameStart = &szChkPointFilePrefix[dwLen];
|
|
|
|
//
|
|
// Now, create the path-included destination file name
|
|
//
|
|
lstrcpyW( szDestFileName, szDestPathName );
|
|
lstrcatW( szDestFileName, lpChkPointFileNameStart );
|
|
|
|
//
|
|
// And, the path-included source file name
|
|
//
|
|
lstrcpyW( szSourceFileName, szChkPointFilePrefix );
|
|
|
|
//
|
|
// Set the file attribute to normal. Continue even if you
|
|
// fail in this step, but log an error. (Note that you are
|
|
// countering the case in which a destination file with
|
|
// the same name exists in the backup directory already and
|
|
// you are trying to overwrite it.)
|
|
//
|
|
if ( !SetFileAttributes( szDestFileName, FILE_ATTRIBUTE_NORMAL ) )
|
|
{
|
|
dwError = GetLastError();
|
|
if ( dwError != ERROR_FILE_NOT_FOUND )
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::Error in changing %1!ws! attribute to NORMAL, Error = %2!d!\n",
|
|
szDestFileName,
|
|
dwError);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Copy the checkpoint file to the destination
|
|
//
|
|
dwError = CopyFileW( szSourceFileName, szDestFileName, FALSE );
|
|
if ( !dwError )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::Unable to copy file %1!ws! to %2!ws!, Error = %3!d!\n",
|
|
szSourceFileName,
|
|
szDestFileName,
|
|
dwError);
|
|
CL_LOGFAILURE( dwError );
|
|
goto FnExit;
|
|
}
|
|
|
|
//
|
|
// Set the file attribute to read-only. Continue even if you
|
|
// fail in this step, but log an error.
|
|
//
|
|
if ( !SetFileAttributes( szDestFileName, FILE_ATTRIBUTE_READONLY ) )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::Error in changing %1!ws! attribute to READONLY, Error = %2!d!\n",
|
|
szDestFileName,
|
|
dwError);
|
|
}
|
|
|
|
//
|
|
// Now, create the path-included destination file name
|
|
//
|
|
lstrcpyW( szDestFileName, szDestPathName );
|
|
lstrcatW( szDestFileName, cszQuoFileName );
|
|
|
|
//
|
|
// And, the path-included source file name
|
|
//
|
|
lstrcpyW( szSourceFileName, szQuoLogPathName );
|
|
lstrcatW( szSourceFileName, cszQuoFileName );
|
|
|
|
//
|
|
// Set the destination file attribute to normal. Continue even if you
|
|
// fail in this step, but log an error. (Note that you are
|
|
// countering the case in which a destination file with
|
|
// the same name exists in the backup directory already and
|
|
// you are trying to overwrite it.)
|
|
//
|
|
if ( !SetFileAttributes( szDestFileName, FILE_ATTRIBUTE_NORMAL ) )
|
|
{
|
|
dwError = GetLastError();
|
|
if ( dwError != ERROR_FILE_NOT_FOUND )
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::Error in changing %1!ws! attribute to NORMAL, Error = %2!d!\n",
|
|
szDestFileName,
|
|
dwError);
|
|
}
|
|
}
|
|
|
|
//
|
|
// Copy the quorum log file to the destination
|
|
//
|
|
dwError = CopyFileW( szSourceFileName, szDestFileName, FALSE );
|
|
if ( !dwError )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::Unable to copy file %1!ws! to %2!ws!, Error = %3!d!\n",
|
|
szSourceFileName,
|
|
szDestFileName,
|
|
dwError);
|
|
CL_LOGFAILURE( dwError );
|
|
goto FnExit;
|
|
}
|
|
|
|
//
|
|
// Set the destination file attribute to read-only. Continue even
|
|
// if you fail in this step, but log an error
|
|
//
|
|
if ( !SetFileAttributes( szDestFileName, FILE_ATTRIBUTE_READONLY ) )
|
|
{
|
|
dwError = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::Error in changing %1!ws! attribute to READONLY, Error = %2!d!\n",
|
|
szDestFileName,
|
|
dwError);
|
|
}
|
|
|
|
//
|
|
// Now copy the resource chkpt files to the destination. Note that
|
|
// we call this function with both gQuoLock and gLockDmpRoot held.
|
|
// The former lock prevents any checkpoint being read or written
|
|
// via CppReadCheckpoint() and CppWriteCheckpoint() while the
|
|
// following function is executing.
|
|
//
|
|
// Note: However, the CpDeleteRegistryCheckPoint() function is
|
|
// unprotected and poses a potential danger here.
|
|
//
|
|
// Note: Also, currently the following function returns ERROR_SUCCESS
|
|
// in all cases.
|
|
//
|
|
dwError = CpCopyCheckpointFiles( szDestPathName, TRUE );
|
|
if (dwError != ERROR_SUCCESS)
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::Unable to copy resource checkpoint files, Error = %1!d!\n",
|
|
dwError);
|
|
goto FnExit;
|
|
}
|
|
|
|
//
|
|
// Now create an empty READONLY, HIDDEN, file in the destination
|
|
// directory which marks the successful ending of the backup.
|
|
//
|
|
lstrcpyW( szDestFileName, szDestPathName );
|
|
lstrcatW( szDestFileName, L"CLUSBACKUP.DAT");
|
|
hFile = CreateFileW( szDestFileName,
|
|
GENERIC_READ | GENERIC_WRITE,
|
|
0,
|
|
NULL,
|
|
CREATE_NEW,
|
|
FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_READONLY,
|
|
NULL );
|
|
|
|
if ( hFile == INVALID_HANDLE_VALUE )
|
|
{
|
|
dwError = GetLastError();
|
|
CL_LOGFAILURE( dwError );
|
|
goto FnExit;
|
|
}
|
|
|
|
dwError = ERROR_SUCCESS;
|
|
|
|
FnExit:
|
|
LocalFree ( szDestFileName );
|
|
LocalFree ( szDestPathName );
|
|
if ( hFile != INVALID_HANDLE_VALUE )
|
|
{
|
|
CloseHandle ( hFile );
|
|
}
|
|
return ( dwError );
|
|
}
|
|
|
|
/****
|
|
@func DWORD | DmpRestoreClusterDatabase | Copy the quorum log and all the
|
|
checkpoint files from CsDatabaseRestorePath to the
|
|
quorum log path in the quorum disk.
|
|
|
|
@parm IN LPCWSTR | lpszQuoLogPathName | The quorum directory path
|
|
where the backed up files have to be copied to.
|
|
|
|
@rdesc Returns a Win32 error code on failure. ERROR_SUCCESS on success.
|
|
|
|
@xref <f CppRestoreCpFiles> <f DmBackupClusterDatabase>
|
|
****/
|
|
DWORD DmpRestoreClusterDatabase(
|
|
IN LPCWSTR lpszQuoLogPathName )
|
|
{
|
|
HANDLE hFindFile = INVALID_HANDLE_VALUE;
|
|
WIN32_FIND_DATA FindData;
|
|
DWORD status;
|
|
WCHAR szDestFileName[MAX_PATH];
|
|
LPWSTR szSourceFileName = NULL;
|
|
LPWSTR szSourcePathName = NULL;
|
|
DWORD dwLen;
|
|
WCHAR szChkptFileNameStart[4];
|
|
WCHAR szTempFileName[MAX_PATH];
|
|
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 10/20/98
|
|
//
|
|
dwLen = lstrlenW ( CsDatabaseRestorePath );
|
|
//
|
|
// It is safer to use dynamic memory allocation for user-supplied
|
|
// path since we don't want to put restrictions on the user
|
|
// on the length of the path that can be supplied. However, as
|
|
// far as our own quorum disk path is concerned, it is system-dependent
|
|
// and static memory allocation for that would suffice.
|
|
//
|
|
szSourcePathName = (LPWSTR) LocalAlloc ( LMEM_FIXED,
|
|
( dwLen + 25 ) *
|
|
sizeof ( WCHAR ) );
|
|
|
|
if ( szSourcePathName == NULL )
|
|
{
|
|
status = GetLastError();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpRestoreClusterDatabase: Error %1!d! in allocating memory for %2!ws! !!!\n",
|
|
status,
|
|
CsDatabaseRestorePath);
|
|
CL_LOGFAILURE( status );
|
|
goto FnExit;
|
|
}
|
|
|
|
lstrcpyW ( szSourcePathName, CsDatabaseRestorePath );
|
|
|
|
//
|
|
// If the client-supplied path is not already terminated with '\',
|
|
// then add it.
|
|
//
|
|
if ( szSourcePathName [dwLen-1] != L'\\' )
|
|
{
|
|
szSourcePathName [dwLen++] = L'\\';
|
|
szSourcePathName[dwLen] = L'\0';
|
|
}
|
|
|
|
lstrcatW ( szSourcePathName, L"CLUSBACKUP.DAT" );
|
|
|
|
//
|
|
// Try to find the CLUSBACKUP.DAT file in the directory
|
|
//
|
|
hFindFile = FindFirstFile( szSourcePathName, &FindData );
|
|
//
|
|
// Reuse the source path name variable
|
|
//
|
|
szSourcePathName[dwLen] = L'\0';
|
|
if ( hFindFile == INVALID_HANDLE_VALUE )
|
|
{
|
|
status = GetLastError();
|
|
if ( status != ERROR_FILE_NOT_FOUND )
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpRestoreClusterDatabase: Path %1!ws! unavailable, Error = %2!d! !!!\n",
|
|
szSourcePathName,
|
|
status);
|
|
} else
|
|
{
|
|
status = ERROR_DATABASE_BACKUP_CORRUPT;
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpRestoreClusterDatabase: Backup procedure not fully successful, can't restore DB, Error = %1!d! !!!\n",
|
|
status);
|
|
}
|
|
CL_LOGFAILURE( status );
|
|
goto FnExit;
|
|
}
|
|
FindClose ( hFindFile );
|
|
|
|
szSourcePathName[dwLen++] = L'*';
|
|
szSourcePathName[dwLen] = L'\0';
|
|
|
|
//
|
|
// Try to find any file in the directory
|
|
//
|
|
hFindFile = FindFirstFile( szSourcePathName, &FindData );
|
|
//
|
|
// Reuse the source path name variable
|
|
//
|
|
szSourcePathName[dwLen-1] = L'\0';
|
|
if ( hFindFile == INVALID_HANDLE_VALUE )
|
|
{
|
|
status = GetLastError();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpRestoreClusterDatabase: Error %2!d! in trying to find file in path %1!ws!\r\n",
|
|
szSourcePathName,
|
|
status);
|
|
CL_LOGFAILURE( status );
|
|
goto FnExit;
|
|
}
|
|
|
|
szSourceFileName = (LPWSTR) LocalAlloc ( LMEM_FIXED,
|
|
( lstrlenW ( szSourcePathName ) + 1 + LOG_MAX_FILENAME_LENGTH ) *
|
|
sizeof ( WCHAR ) );
|
|
|
|
if ( szSourceFileName == NULL )
|
|
{
|
|
status = GetLastError();
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpRestoreClusterDatabase: Error %1!d! in allocating memory for source file name !!!\n",
|
|
status);
|
|
CL_LOGFAILURE( status );
|
|
goto FnExit;
|
|
}
|
|
|
|
status = ERROR_SUCCESS;
|
|
|
|
//
|
|
// Now, find and copy all relevant files from the backup area
|
|
// to the quorum disk. Note that only one of the copied chk*.tmp
|
|
// files will be used as the valid checkpoint. However, we copy
|
|
// all chk*.tmp files to make this implementation simple and
|
|
// straightforward to comprehend.
|
|
//
|
|
while ( status == ERROR_SUCCESS )
|
|
{
|
|
if ( FindData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY )
|
|
{
|
|
if ( FindData.cFileName[0] == L'.' )
|
|
{
|
|
if ( FindData.cFileName[1] == L'\0' ||
|
|
FindData.cFileName[1] == L'.' && FindData.cFileName[2] == L'\0' )
|
|
{
|
|
goto skip;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Since the found file is infact a directory, check
|
|
// whether it is one of the resource checkpoint directories.
|
|
// If so copy the relevant checkpoint files to the quorum
|
|
// disk.
|
|
//
|
|
if ( ( status = CpRestoreCheckpointFiles( szSourcePathName,
|
|
FindData.cFileName,
|
|
lpszQuoLogPathName ) )
|
|
!= ERROR_SUCCESS )
|
|
{
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpRestoreClusterDatabase: Error %1!d! in copying resource cp files !!!\n",
|
|
status);
|
|
CL_LOGFAILURE( status );
|
|
goto FnExit;
|
|
}
|
|
} else
|
|
{
|
|
lstrcpyW ( szTempFileName, FindData.cFileName );
|
|
szTempFileName[3] = L'\0';
|
|
mbstowcs( szChkptFileNameStart, "chk", 4 );
|
|
if ( ( lstrcmpW ( szTempFileName, szChkptFileNameStart ) == 0 )
|
|
||
|
|
( lstrcmpW ( FindData.cFileName, cszQuoFileName ) == 0 ) )
|
|
{
|
|
lstrcpyW( szSourceFileName, szSourcePathName );
|
|
lstrcatW( szSourceFileName, FindData.cFileName );
|
|
lstrcpyW( szDestFileName, lpszQuoLogPathName );
|
|
lstrcatW( szDestFileName, FindData.cFileName );
|
|
|
|
status = CopyFileW( szSourceFileName, szDestFileName, FALSE );
|
|
if ( !status )
|
|
{
|
|
status = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpRestoreClusterDatabase: Unable to copy file %1!ws! to %2!ws!, Error = %3!d!\n",
|
|
szSourceFileName,
|
|
szDestFileName,
|
|
status);
|
|
CL_LOGFAILURE( status );
|
|
goto FnExit;
|
|
}
|
|
//
|
|
// Set the file attribute to normal. There is no reason
|
|
// to fail in this step since the quorum disk is ours
|
|
// and we succeeded in copying the file.
|
|
//
|
|
if ( !SetFileAttributes( szDestFileName, FILE_ATTRIBUTE_NORMAL ) )
|
|
{
|
|
status = GetLastError();
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpLogCheckpointAndBackup::Error in changing %1!ws! attribute to NORMAL, error = %2!u!\n",
|
|
szDestFileName,
|
|
status);
|
|
CL_LOGFAILURE( status );
|
|
goto FnExit;
|
|
}
|
|
}
|
|
}
|
|
skip:
|
|
if ( FindNextFile( hFindFile, &FindData ) )
|
|
{
|
|
status = ERROR_SUCCESS;
|
|
} else
|
|
{
|
|
status = GetLastError();
|
|
}
|
|
}
|
|
|
|
if ( status == ERROR_NO_MORE_FILES )
|
|
{
|
|
status = ERROR_SUCCESS;
|
|
} else
|
|
{
|
|
ClRtlLogPrint(LOG_UNUSUAL,
|
|
"[DM] DmpRestoreClusterDatabase: FindNextFile failed! Error = %1!u!\n",
|
|
status);
|
|
}
|
|
|
|
FnExit:
|
|
if ( hFindFile != INVALID_HANDLE_VALUE )
|
|
{
|
|
FindClose ( hFindFile );
|
|
}
|
|
|
|
LocalFree ( szSourceFileName );
|
|
LocalFree ( szSourcePathName );
|
|
|
|
return ( status );
|
|
}
|
|
|
|
/****
|
|
@func DWORD | DmpHandleNodeDownEvent | Handle the node down event
|
|
for DM.
|
|
|
|
@parm IN LPVOID | NotUsed | Unused parameter.
|
|
|
|
@rdesc Returns ERROR_SUCCESS.
|
|
|
|
@xref <f DmpEventHandler>
|
|
****/
|
|
DWORD DmpHandleNodeDownEvent(
|
|
IN LPVOID NotUsed )
|
|
{
|
|
//
|
|
// Chittur Subbaraman (chitturs) - 7/23/99
|
|
//
|
|
// This function handles the DM node down processing as a separate
|
|
// thread. The reasons for creating this thread are outlined in
|
|
// DmpEventHandler.
|
|
//
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpHandleNodeDownEvent - Entry...\r\n");
|
|
|
|
//
|
|
// SS: I am not the owner of the quorum resource as yet, but I might
|
|
// be after rearbitration, in that case, just set a flag saying we
|
|
// need to checkpoint. It will be looked at when the quorum resource
|
|
// comes online. The following function in FM checks if the
|
|
// quorum is online on this node and if it is, it calls
|
|
// the checkpoint callback function. If it is not, it sets the
|
|
// global boolean variable passed to TRUE.
|
|
//
|
|
FmCheckQuorumState( DmpLogCheckPointCb, &gbNeedToCheckPoint );
|
|
|
|
ClRtlLogPrint(LOG_NOISE,
|
|
"[DM] DmpHandleNodeDownEvent - Exit...\r\n");
|
|
|
|
return( ERROR_SUCCESS );
|
|
}
|