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Add HINT for restartpoint race with KeepFileRestoredFromArchive().

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The five commits ending at cc2c7d65fc27e877c9f407587b0b92d46cd6dd16
closed this race condition for v15+.  For v14 through v10, add a HINT to
discourage studying the cosmetic problem.

Reviewed by Kyotaro Horiguchi and David Steele.

Discussion: https://postgr.es/m/20220731061747.GA3692882@rfd.leadboat.com
This commit is contained in:
Noah Misch 2022-08-05 08:30:58 -07:00
parent 4ad4c1f419
commit 41f613fc25
2 changed files with 12 additions and 3 deletions
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5
src/backend/access/transam/xlog.c
View File

@ -3392,7 +3392,10 @@ XLogFileInit(XLogSegNo logsegno, bool *use_existent, bool use_lock)
if (fd < 0)
ereport(ERROR,
(errcode_for_file_access(),
errmsg("could not open file \"%s\": %m", path)));
errmsg("could not open file \"%s\": %m", path),
(AmCheckpointerProcess() ?
errhint("This is known to fail occasionally during archive recovery, where it is harmless.") :
0)));
elog(DEBUG2, "done creating and filling new WAL file");

10
src/backend/storage/file/fd.c
View File

@ -748,7 +748,10 @@ durable_link_or_rename(const char *oldfile, const char *newfile, int elevel)
ereport(elevel,
(errcode_for_file_access(),
errmsg("could not link file \"%s\" to \"%s\": %m",
oldfile, newfile)));
oldfile, newfile),
(AmCheckpointerProcess() ?
errhint("This is known to fail occasionally during archive recovery, where it is harmless.") :
0)));
return -1;
}
unlink(oldfile);
@ -759,7 +762,10 @@ durable_link_or_rename(const char *oldfile, const char *newfile, int elevel)
ereport(elevel,
(errcode_for_file_access(),
errmsg("could not rename file \"%s\" to \"%s\": %m",
oldfile, newfile)));
oldfile, newfile),
(AmCheckpointerProcess() ?
errhint("This is known to fail occasionally during archive recovery, where it is harmless.") :
0)));
return -1;
}
#endif