extern void PersistentFilespace_LookupTidAndSerialNum(
Oid filespaceOid,
/* The filespace OID for the lookup. */
ItemPointer persistentTid,
/* TID of the gp_persistent_filespace_node tuple for the rel file */
int64 *persistentSerialNum)
{
READ_PERSISTENT_STATE_ORDERED_LOCK_DECLARE;
FilespaceDirEntry filespaceDirEntry;
PersistentFilespace_VerifyInitScan();
READ_PERSISTENT_STATE_ORDERED_LOCK;
filespaceDirEntry =
PersistentFilespace_FindDirUnderLock(
filespaceOid);
if (filespaceDirEntry == NULL)
elog(ERROR, "Did not find persistent filespace entry %u",
filespaceOid);
*persistentTid = filespaceDirEntry->persistentTid;
*persistentSerialNum = filespaceDirEntry->persistentSerialNum;
READ_PERSISTENT_STATE_ORDERED_UNLOCK;
}
/*
* Add a mirror.
*/
void
PersistentFilespace_AddMirror(Oid filespace,
char *mirpath,
int16 pridbid, int16 mirdbid,
bool set_mirror_existence)
{
PersistentFileSysObjName fsObjName;
char *newpath;
WRITE_PERSISTENT_STATE_ORDERED_LOCK_DECLARE;
FilespaceDirEntry fde;
if (Persistent_BeforePersistenceWork())
elog(ERROR, "persistent table changes forbidden");
PersistentFilespace_VerifyInitScan();
PersistentFileSysObjName_SetFilespaceDir(&fsObjName, filespace);
WRITE_PERSISTENT_STATE_ORDERED_LOCK;
fde = PersistentFilespace_FindDirUnderLock(filespace);
if (fde == NULL)
elog(ERROR, "did not find persistent filespace entry %u",
filespace);
if (fde->dbId1 == pridbid)
{
fde->dbId2 = mirdbid;
PersistentFilespace_BlankPadCopyLocation(
fde->locationBlankPadded2,
mirpath);
newpath = fde->locationBlankPadded2;
}
else if (fde->dbId2 == pridbid)
{
fde->dbId1 = mirdbid;
PersistentFilespace_BlankPadCopyLocation(
fde->locationBlankPadded1,
mirpath);
newpath = fde->locationBlankPadded1;
}
else
{
Insist(false);
}
PersistentFileSysObj_AddMirror(&fsObjName,
&fde->persistentTid,
fde->persistentSerialNum,
pridbid,
mirdbid,
(void *)newpath,
set_mirror_existence,
/* flushToXlog */ false);
WRITE_PERSISTENT_STATE_ORDERED_UNLOCK;
}
bool PersistentFilespace_TryGetFilespacePathUnderLock(
Oid filespaceOid,
char **filespaceLocation)
{
FilespaceDirEntry filespaceDirEntry;
char *primaryBlankPadded = NULL;
*filespaceLocation = NULL;
#ifdef MASTER_MIRROR_SYNC
/*
* Can't rely on persistent tables or memory structures on the standby so
* get it from the cache maintained by the master mirror sync code
*/
if (GPStandby())
{
return mmxlog_filespace_get_path(
filespaceOid,
filespaceLocation);
}
#endif
/*
* Important to make this call AFTER we check if we are the Standby Master.
*/
PersistentFilespace_VerifyInitScan();
filespaceDirEntry =
PersistentFilespace_FindDirUnderLock(
filespaceOid);
if (filespaceDirEntry == NULL)
return false;
/*
* The persistent_filespace_node_table contains the paths for both the
* primary and mirror nodes, and the table is the same on both sides of the
* mirror. When it was first created the primary put its location first,
* but we don't know if we were the primary when it was created or not. To
* determine which path corresponds to this node we compare our dbid to the
* one stored in the table.
*/
primaryBlankPadded = filespaceDirEntry->locationBlankPadded1;
/* These should both have been populated by one of the cases above */
Assert(primaryBlankPadded);
PersistentFilespace_ConvertBlankPaddedLocation(
filespaceLocation,
primaryBlankPadded,
/* isPrimary */ true);
return true;
}
bool
PersistentFilespace_TryGetPrimaryAndMirror(
Oid filespaceOid,
/* The filespace OID to lookup. */
char **primaryFilespaceLocation,
/* The primary filespace directory path. Return NULL for global and base. */
char **mirrorFilespaceLocation)
/*
* The primary filespace directory path. Return NULL for global and base.
* Or, returns NULL when mirror not configured.
*/
{
FilespaceDirEntry filespaceDirEntry;
bool result = false;
*primaryFilespaceLocation = NULL;
*mirrorFilespaceLocation = NULL;
#ifdef MASTER_MIRROR_SYNC
/*
* Can't rely on persistent tables or memory structures on the standby so
* get it from the cache maintained by the master mirror sync code
*/
if (IsStandbyMode())
{
return mmxlog_filespace_get_path(
filespaceOid,
primaryFilespaceLocation);
}
#endif
/*
* Important to make this call AFTER we check if we are the Standby
* Master.
*/
PersistentFilespace_VerifyInitScan();
LWLockAcquire(FilespaceHashLock, LW_SHARED);
filespaceDirEntry = PersistentFilespace_FindDirUnderLock(filespaceOid);
if (filespaceDirEntry)
{
PersistentFilespace_GetPaths(filespaceDirEntry,
primaryFilespaceLocation,
mirrorFilespaceLocation);
result = true;
}
LWLockRelease(FilespaceHashLock);
return result;
}
extern void PersistentFilespace_LookupTidAndSerialNum(
Oid filespaceOid,
/* The filespace OID for the lookup. */
ItemPointer persistentTid,
/* TID of the gp_persistent_filespace_node tuple for the rel file */
int64 *persistentSerialNum)
{
FilespaceDirEntry filespaceDirEntry;
PersistentFilespace_VerifyInitScan();
LWLockAcquire(FilespaceHashLock, LW_SHARED);
filespaceDirEntry = PersistentFilespace_FindDirUnderLock(filespaceOid);
if (filespaceDirEntry == NULL)
elog(ERROR, "Did not find persistent filespace entry %u",
filespaceOid);
*persistentTid = filespaceDirEntry->persistentTid;
*persistentSerialNum = filespaceDirEntry->persistentSerialNum;
LWLockRelease(FilespaceHashLock);
}
/*
* Indicate we are aborting the create of a filespace file.
*
* This state will make sure the filespace gets dropped after a system crash.
*/
PersistentFileSysObjStateChangeResult PersistentFilespace_MarkAbortingCreate(
Oid filespaceOid,
/* The filespace OID for the aborting create. */
ItemPointer persistentTid,
/* TID of the gp_persistent_rel_files tuple for the rel file */
int64 persistentSerialNum,
/* Serial number for the filespace. Distinquishes the uses of the tuple. */
bool retryPossible)
{
WRITE_PERSISTENT_STATE_ORDERED_LOCK_DECLARE;
PersistentFileSysObjName fsObjName;
FilespaceDirEntry filespaceDirEntry;
PersistentFileSysObjStateChangeResult stateChangeResult;
if (Persistent_BeforePersistenceWork())
{
if (Debug_persistent_print)
elog(Persistent_DebugPrintLevel(),
"Skipping persistent filespace %u because we are before persistence work",
filespaceOid);
return false; // The initdb process will load the persistent table once we out of bootstrap mode.
}
PersistentFilespace_VerifyInitScan();
PersistentFileSysObjName_SetFilespaceDir(&fsObjName,filespaceOid);
WRITE_PERSISTENT_STATE_ORDERED_LOCK;
WRITE_FILESPACE_HASH_LOCK;
filespaceDirEntry = PersistentFilespace_FindDirUnderLock(filespaceOid);
if (filespaceDirEntry == NULL)
elog(ERROR, "Did not find persistent filespace entry %u",
filespaceOid);
if (filespaceDirEntry->state != PersistentFileSysState_CreatePending)
elog(ERROR, "Persistent filespace entry %u expected to be in 'Create Pending' (actual state '%s')",
filespaceOid,
PersistentFileSysObjState_Name(filespaceDirEntry->state));
filespaceDirEntry->state = PersistentFileSysState_AbortingCreate;
WRITE_FILESPACE_HASH_UNLOCK;
stateChangeResult =
PersistentFileSysObj_StateChange(
&fsObjName,
persistentTid,
persistentSerialNum,
PersistentFileSysState_AbortingCreate,
retryPossible,
/* flushToXlog */ false,
/* oldState */ NULL,
/* verifiedActionCallback */ NULL);
WRITE_PERSISTENT_STATE_ORDERED_UNLOCK;
if (Debug_persistent_print)
elog(Persistent_DebugPrintLevel(),
"Persistent filespace directory: '%s' changed state from 'Create Pending' to 'Aborting Create', serial number " INT64_FORMAT " at TID %s (State-Change result '%s')",
PersistentFileSysObjName_ObjectName(&fsObjName),
persistentSerialNum,
ItemPointerToString(persistentTid),
PersistentFileSysObjStateChangeResult_Name(stateChangeResult));
return stateChangeResult;
}
bool PersistentFilespace_TryGetPrimaryAndMirrorUnderLock(
Oid filespaceOid,
/* The filespace OID to lookup. */
char **primaryFilespaceLocation,
/* The primary filespace directory path. Return NULL for global and base. */
char **mirrorFilespaceLocation)
/* The primary filespace directory path. Return NULL for global and base.
* Or, returns NULL when mirror not configured. */
{
FilespaceDirEntry filespaceDirEntry;
int16 primaryDbId;
char *primaryBlankPadded = NULL;
char *mirrorBlankPadded = NULL;
*primaryFilespaceLocation = NULL;
*mirrorFilespaceLocation = NULL;
#ifdef MASTER_MIRROR_SYNC
/*
* Can't rely on persistent tables or memory structures on the standby so
* get it from the cache maintained by the master mirror sync code
*/
if (IsStandbyMode())
{
return mmxlog_filespace_get_path(
filespaceOid,
primaryFilespaceLocation);
}
#endif
/*
* Important to make this call AFTER we check if we are the Standby Master.
*/
PersistentFilespace_VerifyInitScan();
filespaceDirEntry =
PersistentFilespace_FindDirUnderLock(
filespaceOid);
if (filespaceDirEntry == NULL)
return false;
/*
* The persistent_filespace_node_table contains the paths for both the
* primary and mirror nodes, and the table is the same on both sides of the
* mirror. When it was first created the primary put its location first,
* but we don't know if we were the primary when it was created or not. To
* determine which path corresponds to this node we compare our dbid to the
* one stored in the table.
*/
primaryDbId = GpIdentity.dbid;
if (filespaceDirEntry->dbId1 == primaryDbId)
{
/* dbid == dbid1 */
primaryBlankPadded = filespaceDirEntry->locationBlankPadded1;
mirrorBlankPadded = filespaceDirEntry->locationBlankPadded2;
}
else if (filespaceDirEntry->dbId2 == primaryDbId)
{
/* dbid == dbid2 */
primaryBlankPadded = filespaceDirEntry->locationBlankPadded2;
mirrorBlankPadded = filespaceDirEntry->locationBlankPadded1;
}
else
{
/*
* The dbid check above does not work for the Master Node during
* initial startup, because the master doesn't yet know its own dbid.
* To handle this we special case for the master node the master
* always considers the first entry as the correct location.
*
* Note: This design may need to be reconsidered to handle standby
* masters!
*/
PrimaryMirrorMode mode;
getPrimaryMirrorStatusCodes(&mode, NULL, NULL, NULL);
if (mode == PMModeMaster)
{
/* Master node */
primaryBlankPadded = filespaceDirEntry->locationBlankPadded1;
mirrorBlankPadded = filespaceDirEntry->locationBlankPadded2;
}
else
{
/*
* Current dbid matches neither dbid in table and was not started
* as a master node.
*/
ereport(FATAL,
(errcode(ERRCODE_INTERNAL_ERROR),
errmsg("Unable to determine dbid for filespace lookup")));
}
}
/* These should both have been populated by one of the cases above */
Assert(primaryBlankPadded);
Assert(mirrorBlankPadded);
PersistentFilespace_ConvertBlankPaddedLocation(
primaryFilespaceLocation,
primaryBlankPadded,
/* isPrimary */ true);
PersistentFilespace_ConvertBlankPaddedLocation(
mirrorFilespaceLocation,
mirrorBlankPadded,
/* isPrimary */ false);
return true;
}
/*
* Indicate we physically removed the filespace file.
*/
void PersistentFilespace_Dropped(
PersistentFileSysObjName *fsObjName,
/* The filespace OID for the dropped filespace. */
ItemPointer persistentTid,
/* TID of the gp_persistent_rel_files tuple for the rel file */
int64 persistentSerialNum)
/* Serial number for the filespace. Distinquishes the uses of the tuple. */
{
WRITE_PERSISTENT_STATE_ORDERED_LOCK_DECLARE;
Oid filespaceOid = fsObjName->variant.filespaceOid;
FilespaceDirEntry filespaceDirEntry;
PersistentFileSysState oldState;
PersistentFileSysObjStateChangeResult stateChangeResult;
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();
WRITE_PERSISTENT_STATE_ORDERED_LOCK;
filespaceDirEntry =
PersistentFilespace_FindDirUnderLock(
filespaceOid);
if (filespaceDirEntry == NULL)
elog(ERROR, "Did not find persistent filespace entry %u",
filespaceOid);
if (filespaceDirEntry->state != PersistentFileSysState_DropPending &&
filespaceDirEntry->state != PersistentFileSysState_AbortingCreate)
elog(ERROR, "Persistent filespace entry %u expected to be in 'Drop Pending' or 'Aborting Create' (actual state '%s')",
filespaceOid,
PersistentFileSysObjState_Name(filespaceDirEntry->state));
stateChangeResult =
PersistentFileSysObj_StateChange(
fsObjName,
persistentTid,
persistentSerialNum,
PersistentFileSysState_Free,
/* retryPossible */ false,
/* flushToXlog */ false,
&oldState,
PersistentFilespace_DroppedVerifiedActionCallback);
filespaceDirEntry->state = PersistentFileSysState_Free;
PersistentFilespace_RemoveDirUnderLock(filespaceDirEntry);
WRITE_PERSISTENT_STATE_ORDERED_UNLOCK;
if (Debug_persistent_print)
elog(Persistent_DebugPrintLevel(),
"Persistent filespace directory: '%s' changed state from '%s' to (Free), serial number " INT64_FORMAT " at TID %s (State-Change result '%s')",
PersistentFileSysObjName_ObjectName(fsObjName),
PersistentFileSysObjState_Name(oldState),
persistentSerialNum,
ItemPointerToString(persistentTid),
PersistentFileSysObjStateChangeResult_Name(stateChangeResult));
}
