diff options
| author | Álvaro Herrera <alvherre@kurilemu.de> | 2025-07-07 13:57:43 +0200 |
|---|---|---|
| committer | Álvaro Herrera <alvherre@kurilemu.de> | 2025-07-07 13:57:43 +0200 |
| commit | 2633dae2e4876a9b7cb90ba025e930a553e5107f (patch) | |
| tree | 9eff715f0db067c8454a9edf60588e03795f0c2f /src/bin/pg_basebackup/streamutil.c | |
| parent | 62a17a92833d1eaa60d8ea372663290942a1e8eb (diff) | |
Standardize LSN formatting by zero padding
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
Diffstat (limited to 'src/bin/pg_basebackup/streamutil.c')
| -rw-r--r-- | src/bin/pg_basebackup/streamutil.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/bin/pg_basebackup/streamutil.c b/src/bin/pg_basebackup/streamutil.c index c7b8a4c3a4b..e5a7cb6e5b1 100644 --- a/src/bin/pg_basebackup/streamutil.c +++ b/src/bin/pg_basebackup/streamutil.c @@ -445,7 +445,7 @@ RunIdentifySystem(PGconn *conn, char **sysid, TimeLineID *starttli, /* Get LSN start position if necessary */ if (startpos != NULL) { - if (sscanf(PQgetvalue(res, 0, 2), "%X/%X", &hi, &lo) != 2) + if (sscanf(PQgetvalue(res, 0, 2), "%X/%08X", &hi, &lo) != 2) { pg_log_error("could not parse write-ahead log location \"%s\"", PQgetvalue(res, 0, 2)); @@ -551,7 +551,7 @@ GetSlotInformation(PGconn *conn, const char *slot_name, uint32 hi, lo; - if (sscanf(PQgetvalue(res, 0, 1), "%X/%X", &hi, &lo) != 2) + if (sscanf(PQgetvalue(res, 0, 1), "%X/%08X", &hi, &lo) != 2) { pg_log_error("could not parse restart_lsn \"%s\" for replication slot \"%s\"", PQgetvalue(res, 0, 1), slot_name); |