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Before exiting walreceiver, fsync() all the WAL received.

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Otherwise WAL recovery will replay the un-flushed WAL after walreceiver has
exited, which can lead to a non-recoverable standby if the system crashes hard
at that point.
This commit is contained in:
Heikki Linnakangas 2011-01-17 12:22:24 +02:00
parent a08363d70c
commit 1435a8554c
1 changed files with 3 additions and 0 deletions
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3
src/backend/replication/walreceiver.c
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@ -323,6 +323,9 @@ WalRcvDie(int code, Datum arg)
/* use volatile pointer to prevent code rearrangement */ /* use volatile pointer to prevent code rearrangement */
volatile WalRcvData *walrcv = WalRcv; volatile WalRcvData *walrcv = WalRcv;
/* Ensure that all WAL records received are flushed to disk */
XLogWalRcvFlush();
SpinLockAcquire(&walrcv->mutex); SpinLockAcquire(&walrcv->mutex);
Assert(walrcv->walRcvState == WALRCV_RUNNING || Assert(walrcv->walRcvState == WALRCV_RUNNING ||
walrcv->walRcvState == WALRCV_STOPPING); walrcv->walRcvState == WALRCV_STOPPING);