On Thu, Feb 29, 2024 at 10:53:15AM +1300, David Steele wrote: > This patch adds checkpoint/redo LSNs to recovery error messages where they > may be useful for debugging.
Thanks for following up on that!
> When backup_label is not present, the checkpoint LSN is not logged unless
> backup recovery is in progress or the checkpoint is found. In the case where
> a backup is restored but the backup_label is missing, the checkpoint LSN is
> not logged so it is useful for debugging to have it in the error message.
ereport(PANIC,
- (errmsg("could not locate a valid checkpoint record")));
+ (errmsg("could not locate a valid checkpoint record at
%X/%X",
+ LSN_FORMAT_ARGS(CheckPointLoc))));
}
I've seen this one in the field occasionally, so that's really a
welcome addition IMO.
I've scanned a bit xlogrecovery.c, and I have spotted a couple of that
could gain more information.
ereport(PANIC,
(errmsg("invalid redo record in shutdown checkpoint")));
[...]
ereport(PANIC,
(errmsg("invalid redo in checkpoint record")));
These two could mention CheckPointLoc and checkPoint.redo.
ereport(PANIC,
(errmsg("invalid next transaction ID")));
Perhaps some XID information could be added here?
ereport(FATAL,
(errmsg("WAL ends before consistent recovery point")));
[...]
ereport(FATAL,
(errmsg("WAL ends before end of online backup"),
These two are in xlog.c, and don't mention backupStartPoint for the
first one. Perhaps there's a point in adding some information about
EndOfLog and LocalMinRecoveryPoint as well?
--
Michael
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