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Discussion: https://www.postgresql.org/message-id/e8f86ba5-48f1-a80a-7f1d-b76bcb9c5c47@2ndquadrant.com
This commit is contained in:
Peter Eisentraut
2020-02-17 17:46:37 +01:00
parent 5f1b8260af
commit 9745f93afc
1 changed files with 11 additions and 10 deletions
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21
src/backend/access/transam/xlog.c
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@ -6297,16 +6297,17 @@ StartupXLOG(void)
/*---------- /*----------
* If we previously crashed, perform a couple of actions: * If we previously crashed, perform a couple of actions:
* - The pg_wal directory may still include some temporary WAL segments *
* used when creating a new segment, so perform some clean up to not * - The pg_wal directory may still include some temporary WAL segments
* bloat this path. This is done first as there is no point to sync this * used when creating a new segment, so perform some clean up to not
* temporary data. * bloat this path. This is done first as there is no point to sync
* - There might be data which we had written, intending to fsync it, * this temporary data.
* but which we had not actually fsync'd yet. Therefore, a power failure *
* in the near future might cause earlier unflushed writes to be lost, * - There might be data which we had written, intending to fsync it, but
* even though more recent data written to disk from here on would be * which we had not actually fsync'd yet. Therefore, a power failure in
* persisted. To avoid that, fsync the entire data directory. * the near future might cause earlier unflushed writes to be lost, even
*--------- * though more recent data written to disk from here on would be
* persisted. To avoid that, fsync the entire data directory.
*/ */
if (ControlFile->state != DB_SHUTDOWNED && if (ControlFile->state != DB_SHUTDOWNED &&
ControlFile->state != DB_SHUTDOWNED_IN_RECOVERY) ControlFile->state != DB_SHUTDOWNED_IN_RECOVERY)