Timeline switch after rsync of *offline* pgdata? - Mailing list pgsql-general

Hi,
I have a script, that does, daily:
pg_ctl -D /data1 -s -m fast stop # data1 is working, rw database
pg_ctl -D /data2 -s -m fast stop # data2 is SR slave for another database
rsync -a --delete /data2/ /data1/
rm -rf /data1/pg_log/*

\print -u1 "$(date '+%Y-%m-%d %T %Z'): Pg_controldata for /data2:"
/usr/pgsql-9.0/bin/pg_controldata "/data2"

\print -u1 "$(date '+%Y-%m-%d %T %Z'): Pg_controldata for /data1:"
/usr/pgsql-9.0/bin/pg_controldata "/data1"

as you can see, it is full rsync of offline pgs.

But the pg_controldata outputs are puzzling:

2012-03-08 06:18:58 GMT: Pg_controldata for /data2:
pg_control version number:            903
Catalog version number:               201008051
Database system identifier:           5554952960675921391
Database cluster state:               shut down in recovery
pg_control last modified:             Thu Mar  8 05:35:02 2012
Latest checkpoint location:           CEA/29C835C0
Prior checkpoint location:            CE9/FBE2C010
Latest checkpoint's REDO location:    CEA/1F0028D0
Latest checkpoint's TimeLineID:       2
Latest checkpoint's NextXID:          0/759254939
Latest checkpoint's NextOID:          1817085
Latest checkpoint's NextMultiXactId:  10319293
Latest checkpoint's NextMultiOffset:  29852536
Latest checkpoint's oldestXID:        654
Latest checkpoint's oldestXID's DB:   1
Latest checkpoint's oldestActiveXID:  759252601
Time of latest checkpoint:            Thu Mar  8 05:31:09 2012
Minimum recovery ending location:     CEA/30032028
Backup start location:                0/0
Current wal_level setting:            hot_standby
Current max_connections setting:      1024
Current max_prepared_xacts setting:   10
Current max_locks_per_xact setting:   64
Maximum data alignment:               8
Database block size:                  8192
Blocks per segment of large relation: 131072
WAL block size:                       8192
Bytes per WAL segment:                16777216
Maximum length of identifiers:        64
Maximum columns in an index:          32
Maximum size of a TOAST chunk:        1996
Date/time type storage:               64-bit integers
Float4 argument passing:              by value
Float8 argument passing:              by value

2012-03-08 06:18:58 GMT: /data1:
pg_control version number:            903
Catalog version number:               201008051
Database system identifier:           5554952960675921391
Database cluster state:               shut down
pg_control last modified:             Thu Mar  8 05:35:02 2012
Latest checkpoint location:           CEA/A0000020
Prior checkpoint location:            CEA/9F000020
Latest checkpoint's REDO location:    CEA/A0000020
Latest checkpoint's TimeLineID:       3
Latest checkpoint's NextXID:          0/757048930
Latest checkpoint's NextOID:          1819890
Latest checkpoint's NextMultiXactId:  10282145
Latest checkpoint's NextMultiOffset:  29736818
Latest checkpoint's oldestXID:        654
Latest checkpoint's oldestXID's DB:   1
Latest checkpoint's oldestActiveXID:  0
Time of latest checkpoint:            Thu Mar  8 05:35:02 2012
Minimum recovery ending location:     0/0
Backup start location:                0/0
Current wal_level setting:            minimal
Current max_connections setting:      1024
Current max_prepared_xacts setting:   10
Current max_locks_per_xact setting:   64
Maximum data alignment:               8
Database block size:                  8192
Blocks per segment of large relation: 131072
WAL block size:                       8192
Bytes per WAL segment:                16777216
Maximum length of identifiers:        64
Maximum columns in an index:          32
Maximum size of a TOAST chunk:        1996
Date/time type storage:               64-bit integers
Float4 argument passing:              by value
Float8 argument passing:              by value

The important thing is that pg in data1 incremented timeline.

Pg is 9.0.6, on CentOS 5.5.

Stop of pg's is happening via a init.d script, which does the lines
shown above, and the initscript ends with "OK"

Best regards,

depesz

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