Ejemplo n.º 1
0
static void PersistentFilespace_AddTuple(
	FilespaceDirEntry filespaceDirEntry,

	int64			createMirrorDataLossTrackingSessionNum,

	MirroredObjectExistenceState mirrorExistenceState,

	int32			reserved,

	TransactionId 	parentXid,

	bool			flushToXLog)
				/* When true, the XLOG record for this change will be flushed to disk. */
{
	Oid filespaceOid = filespaceDirEntry->key.filespaceOid;

	ItemPointerData previousFreeTid;

	Datum values[Natts_gp_persistent_filespace_node];

	MemSet(&previousFreeTid, 0, sizeof(ItemPointerData));

	GpPersistentFilespaceNode_SetDatumValues(
										values,
										filespaceOid,
										filespaceDirEntry->dbId1,
										filespaceDirEntry->locationBlankPadded1,
										filespaceDirEntry->dbId2,
										filespaceDirEntry->locationBlankPadded2,
										filespaceDirEntry->state,
										createMirrorDataLossTrackingSessionNum,
										mirrorExistenceState,
										reserved,
										parentXid,
										/* persistentSerialNum */ 0,	// This will be set by PersistentFileSysObj_AddTuple.
										&previousFreeTid);

	PersistentFileSysObj_AddTuple(
							PersistentFsObjType_FilespaceDir,
							values,
							flushToXLog,
							&filespaceDirEntry->persistentTid,
							&filespaceDirEntry->persistentSerialNum);
}
Ejemplo n.º 2
0
/*
 * Indicate we intend to create a filespace file as part of the current transaction.
 *
 * An XLOG IntentToCreate record is generated that will guard the subsequent file-system
 * create in case the transaction aborts.
 *
 * After 1 or more calls to this routine to mark intention about filespace files that are going
 * to be created, call ~_DoPendingCreates to do the actual file-system creates.  (See its
 * note on XLOG flushing).
 */
void PersistentFilespace_MarkCreatePending(
	Oid 		filespaceOid,
				/* The filespace where the filespace lives. */

	int16		primaryDbId,

	char 		*primaryFilespaceLocation,
				/*
				 * The primary filespace directory path.  NOT Blank padded.
				 * Just a NULL terminated string.
				 */

	int16		mirrorDbId,

	char 		*mirrorFilespaceLocation,

	MirroredObjectExistenceState mirrorExistenceState,

	ItemPointer		persistentTid,
				/* TID of the gp_persistent_rel_files tuple for the rel file */

	int64			*persistentSerialNum,


	bool			flushToXLog)
				/* When true, the XLOG record for this change will be flushed to disk. */

{
	WRITE_PERSISTENT_STATE_ORDERED_LOCK_DECLARE;

	PersistentFileSysObjName fsObjName;

	FilespaceDirEntry filespaceDirEntry;
	TransactionId topXid;
	Datum values[Natts_gp_persistent_filespace_node];
	char mirrorFilespaceLocationBlankPadded[FilespaceLocationBlankPaddedWithNullTermLen];
	char primaryFilespaceLocationBlankPadded[FilespaceLocationBlankPaddedWithNullTermLen];

	if (Persistent_BeforePersistenceWork())
	{
		if (Debug_persistent_print)
			elog(Persistent_DebugPrintLevel(),
				 "Skipping persistent filespace %u because we are before persistence work",
				 filespaceOid);

		return;	// The initdb process will load the persistent table once we out of bootstrap mode.
	}

	PersistentFilespace_VerifyInitScan();

	PersistentFileSysObjName_SetFilespaceDir(&fsObjName,filespaceOid);

	topXid = GetTopTransactionId();

	WRITE_PERSISTENT_STATE_ORDERED_LOCK;

	PersistentFilespace_BlankPadCopyLocation(
										primaryFilespaceLocationBlankPadded,
										primaryFilespaceLocation);
	
	PersistentFilespace_BlankPadCopyLocation(
										mirrorFilespaceLocationBlankPadded,
										mirrorFilespaceLocation);

	GpPersistentFilespaceNode_SetDatumValues(
										values,
										filespaceOid,
										primaryDbId,
										primaryFilespaceLocationBlankPadded,
										mirrorDbId,
										mirrorFilespaceLocationBlankPadded,
										PersistentFileSysState_CreatePending,
										/* createMirrorDataLossTrackingSessionNum */ 0,
										mirrorExistenceState,
										/* reserved */ 0,
										/* parentXid */ topXid,
										/* persistentSerialNum */ 0);	// This will be set by PersistentFileSysObj_AddTuple.

	PersistentFileSysObj_AddTuple(
							PersistentFsObjType_FilespaceDir,
							values,
							flushToXLog,
							persistentTid,
							persistentSerialNum);


	WRITE_FILESPACE_HASH_LOCK;

	filespaceDirEntry =	PersistentFilespace_CreateDirUnderLock(filespaceOid);

	Assert(filespaceDirEntry != NULL);

	filespaceDirEntry->dbId1 = primaryDbId;
	memcpy(filespaceDirEntry->locationBlankPadded1, primaryFilespaceLocationBlankPadded,
		   FilespaceLocationBlankPaddedWithNullTermLen);
	
	filespaceDirEntry->dbId2 = mirrorDbId;
	memcpy(filespaceDirEntry->locationBlankPadded2, mirrorFilespaceLocationBlankPadded,
		   FilespaceLocationBlankPaddedWithNullTermLen);

	filespaceDirEntry->state = PersistentFileSysState_CreatePending;
	ItemPointerCopy(persistentTid, &filespaceDirEntry->persistentTid);
	filespaceDirEntry->persistentSerialNum = *persistentSerialNum;

	WRITE_FILESPACE_HASH_UNLOCK;

	/*
	 * This XLOG must be generated under the persistent write-lock.
	 */
#ifdef MASTER_MIRROR_SYNC
	mmxlog_log_create_filespace(filespaceOid);
#endif

	SIMPLE_FAULT_INJECTOR(FaultBeforePendingDeleteFilespaceEntry);

	/*
	 * MPP-18228
	 * To make adding 'Create Pending' entry to persistent table and adding
	 * to the PendingDelete list atomic
	 */
	PendingDelete_AddCreatePendingEntryWrapper(
								&fsObjName,
								persistentTid,
								*persistentSerialNum);

	WRITE_PERSISTENT_STATE_ORDERED_UNLOCK;

	if (Debug_persistent_print)
		elog(Persistent_DebugPrintLevel(),
		     "Persistent filespace directory: Add '%s' in state 'Created', mirror existence state '%s', serial number " INT64_FORMAT " at TID %s",
			 PersistentFileSysObjName_ObjectName(&fsObjName),
			 MirroredObjectExistenceState_Name(mirrorExistenceState),
			 *persistentSerialNum,
			 ItemPointerToString(persistentTid));
}