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Add LSN location in some error messages related to WAL pages

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The error messages reported during any failures while reading or
validating the header of a WAL currently includes only the offset of the
page but not the compiled LSN referring to the page, requiring an extra
step to compile it if looking at the surroundings with pg_waldump or
similar.  Adding this information costs a bit in translation, but also
eases debugging.

Author: Bharath Rupireddy
Reviewed-by:  Álvaro Herrera, Kyotaro Horiguchi, Maxim Orlov, Michael
Paquier
Discussion: https://postgr.es/m/CALj2ACWV=FCddsxcGbVOA=cvPyMr75YCFbSQT6g4KDj=gcJK4g@mail.gmail.com
This commit is contained in:
Michael Paquier
2022-12-05 09:28:29 +09:00
parent 8692f6644e
commit 71cb84ec69
2 changed files with 18 additions and 10 deletions
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13
src/backend/access/transam/xlogrecovery.c
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@@ -3075,9 +3075,10 @@ ReadRecord(XLogPrefetcher *xlogprefetcher, int emode,
XLogFileName(fname, xlogreader->seg.ws_tli, segno,
wal_segment_size);
ereport(emode_for_corrupt_record(emode, xlogreader->EndRecPtr),
(errmsg("unexpected timeline ID %u in WAL segment %s, offset %u",
(errmsg("unexpected timeline ID %u in WAL segment %s, LSN %X/%X, offset %u",
xlogreader->latestPageTLI,
fname,
LSN_FORMAT_ARGS(xlogreader->latestPagePtr),
offset)));
record = NULL;
}
@@ -3280,14 +3281,16 @@ retry:
errno = save_errno;
ereport(emode_for_corrupt_record(emode, targetPagePtr + reqLen),
(errcode_for_file_access(),
errmsg("could not read from WAL segment %s, offset %u: %m",
fname, readOff)));
errmsg("could not read from WAL segment %s, LSN %X/%X, offset %u: %m",
fname, LSN_FORMAT_ARGS(targetPagePtr),
readOff)));
}
else
ereport(emode_for_corrupt_record(emode, targetPagePtr + reqLen),
(errcode(ERRCODE_DATA_CORRUPTED),
errmsg("could not read from WAL segment %s, offset %u: read %d of %zu",
fname, readOff, r, (Size) XLOG_BLCKSZ)));
errmsg("could not read from WAL segment %s, LSN %X/%X, offset %u: read %d of %zu",
fname, LSN_FORMAT_ARGS(targetPagePtr),
readOff, r, (Size) XLOG_BLCKSZ)));
goto next_record_is_invalid;
}
pgstat_report_wait_end();