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Standardize LSN formatting by zero padding

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This commit standardizes the output format for LSNs to ensure consistent
representation across various tools and messages.  Previously, LSNs were
inconsistently printed as `%X/%X` in some contexts, while others used
zero-padding.  This often led to confusion when comparing.

To address this, the LSN format is now uniformly set to `%X/%08X`,
ensuring the lower 32-bit part is always zero-padded to eight
hexadecimal digits.

Author: Japin Li <japinli@hotmail.com>
Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com>
Reviewed-by: Álvaro Herrera <alvherre@kurilemu.de>
Discussion: https://postgr.es/m/ME0P300MB0445CA53CA0E4B8C1879AF84B641A@ME0P300MB0445.AUSP300.PROD.OUTLOOK.COM
This commit is contained in:
Álvaro Herrera
2025-07-07 13:57:43 +02:00
parent 62a17a9283
commit 2633dae2e4
67 changed files with 681 additions and 681 deletions
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8
src/backend/access/transam/twophase.c
View File

@@ -1429,12 +1429,12 @@ XlogReadTwoPhaseData(XLogRecPtr lsn, char **buf, int *len)
if (errormsg)
ereport(ERROR,
(errcode_for_file_access(),
errmsg("could not read two-phase state from WAL at %X/%X: %s",
errmsg("could not read two-phase state from WAL at %X/%08X: %s",
LSN_FORMAT_ARGS(lsn), errormsg)));
else
ereport(ERROR,
(errcode_for_file_access(),
errmsg("could not read two-phase state from WAL at %X/%X",
errmsg("could not read two-phase state from WAL at %X/%08X",
LSN_FORMAT_ARGS(lsn))));
}
@@ -1442,7 +1442,7 @@ XlogReadTwoPhaseData(XLogRecPtr lsn, char **buf, int *len)
(XLogRecGetInfo(xlogreader) & XLOG_XACT_OPMASK) != XLOG_XACT_PREPARE)
ereport(ERROR,
(errcode_for_file_access(),
errmsg("expected two-phase state data is not present in WAL at %X/%X",
errmsg("expected two-phase state data is not present in WAL at %X/%08X",
LSN_FORMAT_ARGS(lsn))));
if (len != NULL)
@@ -2533,7 +2533,7 @@ PrepareRedoAdd(FullTransactionId fxid, char *buf,
ereport(reachedConsistency ? ERROR : WARNING,
(errmsg("could not recover two-phase state file for transaction %u",
hdr->xid),
errdetail("Two-phase state file has been found in WAL record %X/%X, but this transaction has already been restored from disk.",
errdetail("Two-phase state file has been found in WAL record %X/%08X, but this transaction has already been restored from disk.",
LSN_FORMAT_ARGS(start_lsn))));
return;
}