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Commit6271fce

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Add TIMELINE to backup_label file
Allows new test to confirm timelines matchAuthor: Michael PaquierReviewed-by: David Steele
1 parent6668a54 commit6271fce

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2 files changed

+48
-3
lines changed

2 files changed

+48
-3
lines changed

‎src/backend/access/transam/xlog.c

Lines changed: 47 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -10535,6 +10535,7 @@ do_pg_start_backup(const char *backupidstr, bool fast, TimeLineID *starttli_p,
1053510535
backup_started_in_recovery ?"standby" :"master");
1053610536
appendStringInfo(labelfile,"START TIME: %s\n",strfbuf);
1053710537
appendStringInfo(labelfile,"LABEL: %s\n",backupidstr);
10538+
appendStringInfo(labelfile,"START TIMELINE: %u\n",starttli);
1053810539

1053910540
/*
1054010541
* Okay, write the file, or return its contents to caller.
@@ -11015,9 +11016,13 @@ do_pg_stop_backup(char *labelfile, bool waitforarchive, TimeLineID *stoptli_p)
1101511016
(uint32) (startpoint >>32), (uint32)startpoint,startxlogfilename);
1101611017
fprintf(fp,"STOP WAL LOCATION: %X/%X (file %s)\n",
1101711018
(uint32) (stoppoint >>32), (uint32)stoppoint,stopxlogfilename);
11018-
/* transfer remaining lines from label to history file */
11019+
/*
11020+
* Transfer remaining lines including label and start timeline to
11021+
* history file.
11022+
*/
1101911023
fprintf(fp,"%s",remaining);
1102011024
fprintf(fp,"STOP TIME: %s\n",strfbuf);
11025+
fprintf(fp,"STOP TIMELINE: %u\n",stoptli);
1102111026
if (fflush(fp)||ferror(fp)||FreeFile(fp))
1102211027
ereport(ERROR,
1102311028
(errcode_for_file_access(),
@@ -11228,11 +11233,13 @@ read_backup_label(XLogRecPtr *checkPointLoc, bool *backupEndRequired,
1122811233
bool*backupFromStandby)
1122911234
{
1123011235
charstartxlogfilename[MAXFNAMELEN];
11231-
TimeLineIDtli;
11236+
TimeLineIDtli_from_walseg,tli_from_file;
1123211237
FILE*lfp;
1123311238
charch;
1123411239
charbackuptype[20];
1123511240
charbackupfrom[20];
11241+
charbackuplabel[MAXPGPATH];
11242+
charbackuptime[128];
1123611243
uint32hi,
1123711244
lo;
1123811245

@@ -11259,7 +11266,7 @@ read_backup_label(XLogRecPtr *checkPointLoc, bool *backupEndRequired,
1125911266
* format).
1126011267
*/
1126111268
if (fscanf(lfp,"START WAL LOCATION: %X/%X (file %08X%16s)%c",
11262-
&hi,&lo,&tli,startxlogfilename,&ch)!=5||ch!='\n')
11269+
&hi,&lo,&tli_from_walseg,startxlogfilename,&ch)!=5||ch!='\n')
1126311270
ereport(FATAL,
1126411271
(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
1126511272
errmsg("invalid data in file \"%s\"",BACKUP_LABEL_FILE)));
@@ -11288,6 +11295,43 @@ read_backup_label(XLogRecPtr *checkPointLoc, bool *backupEndRequired,
1128811295
*backupFromStandby= true;
1128911296
}
1129011297

11298+
/*
11299+
* Parse START TIME and LABEL. Those are not mandatory fields for
11300+
* recovery but checking for their presence is useful for debugging
11301+
* and the next sanity checks. Cope also with the fact that the
11302+
* result buffers have a pre-allocated size, hence if the backup_label
11303+
* file has been generated with strings longer than the maximum assumed
11304+
* here an incorrect parsing happens. That's fine as only minor
11305+
* consistency checks are done afterwards.
11306+
*/
11307+
if (fscanf(lfp,"START TIME: %127[^\n]\n",backuptime)==1)
11308+
ereport(DEBUG1,
11309+
(errmsg("backup time %s in file \"%s\"",
11310+
backuptime,BACKUP_LABEL_FILE)));
11311+
11312+
if (fscanf(lfp,"LABEL: %1023[^\n]\n",backuplabel)==1)
11313+
ereport(DEBUG1,
11314+
(errmsg("backup label %s in file \"%s\"",
11315+
backuplabel,BACKUP_LABEL_FILE)));
11316+
11317+
/*
11318+
* START TIMELINE is new as of 11. Its parsing is not mandatory, still
11319+
* use it as a sanity check if present.
11320+
*/
11321+
if (fscanf(lfp,"START TIMELINE: %u\n",&tli_from_file)==1)
11322+
{
11323+
if (tli_from_walseg!=tli_from_file)
11324+
ereport(FATAL,
11325+
(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
11326+
errmsg("invalid data in file \"%s\"",BACKUP_LABEL_FILE),
11327+
errdetail("Timeline ID parsed is %u, but expected %u",
11328+
tli_from_file,tli_from_walseg)));
11329+
11330+
ereport(DEBUG1,
11331+
(errmsg("backup timeline %u in file \"%s\"",
11332+
tli_from_file,BACKUP_LABEL_FILE)));
11333+
}
11334+
1129111335
if (ferror(lfp)||FreeFile(lfp))
1129211336
ereport(FATAL,
1129311337
(errcode_for_file_access(),

‎src/test/perl/PostgresNode.pm

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -419,6 +419,7 @@ sub init
419419
print$conf"restart_after_crash = off\n";
420420
print$conf"log_line_prefix = '%m [%p]%q%a '\n";
421421
print$conf"log_statement = all\n";
422+
print$conf"log_min_messages = debug1\n";
422423
print$conf"log_replication_commands = on\n";
423424
print$conf"wal_retrieve_retry_interval = '500ms'\n";
424425
print$conf"port =$port\n";

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