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/pg_basebackup.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/pg_basebackup.c')
| -rw-r--r-- | src/bin/pg_basebackup/pg_basebackup.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/bin/pg_basebackup/pg_basebackup.c b/src/bin/pg_basebackup/pg_basebackup.c index eb7354200bc..55621f35fb6 100644 --- a/src/bin/pg_basebackup/pg_basebackup.c +++ b/src/bin/pg_basebackup/pg_basebackup.c @@ -487,7 +487,7 @@ reached_end_position(XLogRecPtr segendpos, uint32 timeline, if (r < 0) pg_fatal("could not read from ready pipe: %m"); - if (sscanf(xlogend, "%X/%X", &hi, &lo) != 2) + if (sscanf(xlogend, "%X/%08X", &hi, &lo) != 2) pg_fatal("could not parse write-ahead log location \"%s\"", xlogend); xlogendptr = ((uint64) hi) << 32 | lo; @@ -629,7 +629,7 @@ StartLogStreamer(char *startpos, uint32 timeline, char *sysidentifier, param->wal_compress_level = wal_compress_level; /* Convert the starting position */ - if (sscanf(startpos, "%X/%X", &hi, &lo) != 2) + if (sscanf(startpos, "%X/%08X", &hi, &lo) != 2) pg_fatal("could not parse write-ahead log location \"%s\"", startpos); param->startptr = ((uint64) hi) << 32 | lo; @@ -2255,7 +2255,7 @@ BaseBackup(char *compression_algorithm, char *compression_detail, * value directly in the variable, and then set the flag that says * it's there. */ - if (sscanf(xlogend, "%X/%X", &hi, &lo) != 2) + if (sscanf(xlogend, "%X/%08X", &hi, &lo) != 2) pg_fatal("could not parse write-ahead log location \"%s\"", xlogend); xlogendptr = ((uint64) hi) << 32 | lo; |