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Commitaca7484

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Fix missing fsync of SLRU directories.
Harmonize behavior by moving reponsibility for fsyncing directories downinto slru.c. In 10 and later, only the multixact directories weremissed (see commit1b02be2), and in older branches all SLRUs weremissed.Back-patch to all supported releases.Reviewed-by: Andres Freund <andres@anarazel.de>Reviewed-by: Michael Paquier <michael@paquier.xyz>Discussion:https://postgr.es/m/CA%2BhUKGLtsTUOScnNoSMZ-2ZLv%2BwGh01J6kAo_DM8mTRq1sKdSQ%40mail.gmail.com
1 parent6b2c4e5 commitaca7484

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3 files changed

+4
-13
lines changed

3 files changed

+4
-13
lines changed

‎src/backend/access/transam/clog.c

Lines changed: 0 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -836,13 +836,6 @@ CheckPointCLOG(void)
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/* Flush dirty CLOG pages to disk */
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TRACE_POSTGRESQL_CLOG_CHECKPOINT_START(true);
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SimpleLruFlush(XactCtl, true);
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/*
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* fsync pg_xact to ensure that any files flushed previously are durably
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* on disk.
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*/
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fsync_fname("pg_xact", true);
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TRACE_POSTGRESQL_CLOG_CHECKPOINT_DONE(true);
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}
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‎src/backend/access/transam/commit_ts.c

Lines changed: 0 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -822,12 +822,6 @@ CheckPointCommitTs(void)
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{
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/* Flush dirty CommitTs pages to disk */
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SimpleLruFlush(CommitTsCtl, true);
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/*
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* fsync pg_commit_ts to ensure that any files flushed previously are
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* durably on disk.
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*/
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fsync_fname("pg_commit_ts", true);
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}
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/*

‎src/backend/access/transam/slru.c

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1187,6 +1187,10 @@ SimpleLruFlush(SlruCtl ctl, bool allow_redirtied)
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}
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if (!ok)
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SlruReportIOError(ctl,pageno,InvalidTransactionId);
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/* Ensure that directory entries for new files are on disk. */
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if (ctl->do_fsync)
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fsync_fname(ctl->Dir, true);
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}
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/*

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