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| author | Noah Misch <noah@leadboat.com> | 2024-02-01 13:44:19 -0800 |
|---|---|---|
| committer | Noah Misch <noah@leadboat.com> | 2024-02-01 13:44:19 -0800 |
| commit | 0b6517a3b79ae02fb95731d8b1dc70b10cf7b532 (patch) | |
| tree | 754ecf65da21b00cf07aeb378070b62540ae0689 /src/backend/commands/dbcommands.c | |
| parent | df220714e50f2e924c57f4a8d9f578cf6c92a73f (diff) | |
| download | postgresql-0b6517a3b79ae02fb95731d8b1dc70b10cf7b532.tar.gz postgresql-0b6517a3b79ae02fb95731d8b1dc70b10cf7b532.zip | |
Sync PG_VERSION file in CREATE DATABASE.
An OS crash could leave PG_VERSION empty or missing. The same symptom
appeared in a backup by block device snapshot, taken after the next
checkpoint and before the OS flushes the PG_VERSION blocks. Device
snapshots are not a documented backup method, however. Back-patch to
v15, where commit 9c08aea6a3090a396be334cc58c511edab05776a introduced
STRATEGY=WAL_LOG and made it the default.
Discussion: https://postgr.es/m/20240130195003.0a.nmisch@google.com
Diffstat (limited to 'src/backend/commands/dbcommands.c')
| -rw-r--r-- | src/backend/commands/dbcommands.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/backend/commands/dbcommands.c b/src/backend/commands/dbcommands.c index dc420acae92..41ed2d3bd9b 100644 --- a/src/backend/commands/dbcommands.c +++ b/src/backend/commands/dbcommands.c @@ -508,6 +508,14 @@ CreateDirAndVersionFile(char *dbpath, Oid dbid, Oid tsid, bool isRedo) } pgstat_report_wait_end(); + pgstat_report_wait_start(WAIT_EVENT_VERSION_FILE_SYNC); + if (pg_fsync(fd) != 0) + ereport(data_sync_elevel(ERROR), + (errcode_for_file_access(), + errmsg("could not fsync file \"%s\": %m", versionfile))); + fsync_fname(dbpath, true); + pgstat_report_wait_end(); + /* Close the version file. */ CloseTransientFile(fd); |