Re: BUG #8043: 9.2.4 doesn't open WAL files from archive, only looks in pg_xlog - Mailing list pgsql-bugs
From | Jeff Janes |
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Subject | Re: BUG #8043: 9.2.4 doesn't open WAL files from archive, only looks in pg_xlog |
Date | |
Msg-id | CAMkU=1xnn=eFnfF2Rw5xipDuXGu89ct8VEJz8DCP4QuT2mZW5A@mail.gmail.com Whole thread Raw |
In response to | BUG #8043: 9.2.4 doesn't open WAL files from archive, only looks in pg_xlog (bohmer@visionlink.org) |
Responses |
Re: BUG #8043: 9.2.4 doesn't open WAL files from archive,
only looks in pg_xlog
(Heikki Linnakangas <hlinnakangas@vmware.com>)
|
List | pgsql-bugs |
On Fri, Apr 5, 2013 at 12:27 PM, <bohmer@visionlink.org> wrote: > The following bug has been logged on the website: > > Bug reference: 8043 > Logged by: Jeff Bohmer > Email address: bohmer@visionlink.org > PostgreSQL version: 9.2.4 > Operating system: CentOS 5.9 x86_64 kernel 2.6.18-348.3.1.el5 > Description: > > Hi pgsql-bugs, > > PG version: 9.2.4, from yum.postgresql.org > OS: CentOS 5.9 x86_64 kernel 2.6.18-348.3.1.el5 > > Upgrading from 9.2.3 to 9.2.4 has broken archive recovery for me. Probably > related to this 9.2.4 change: > > Ensure we do crash recovery before entering archive recovery, > if the database was not stopped cleanly and a recovery.conf > file is present (Heikki Linnakangas, Kyotaro Horiguchi, > Mitsumasa Kondo) > > When starting the PostgreSQL 9.2.4 service on a base backup, I get this: > > 2013-04-05 12:49:04 MDT [10302]: [1-1] user=,db= LOG: database system was > interrupted; last known up at 2013-04-05 10:02:01 MDT > 2013-04-05 12:49:04 MDT [10302]: [2-1] user=,db= LOG: starting archive > recovery > 2013-04-05 12:49:04 MDT [10302]: [3-1] user=,db= LOG: could not open file > "pg_xlog/000000010000002F0000002D" (log file 47, segment 45): No such file > or directory > ... > I use a custom base backup script to call pg_start/stop_backup() and make > the backup with rsync. > > The restore_command in recovery.conf is never called by PG 9.2.4 during > startup. I confirmed this by adding a "touch /tmp/restore_command.`date > +%H:%M:%S`" line at the beginning of the shell script I use for my > restore_command. No such files are created when starting PG 9.2.4. > > After downgrading back to 9.2.3, archive recovery works using the very same > base backup, recovery.conf file, and restore_command. The log indicates > that > PG 9.2.3 begins recovery by pulling WAL files from the archive instead of > pg_xlog: > I can reproduce the behavior you report only if I remove the "backup_label" file from the restored data directory before I begin recovery. Of course, doing that renders the backup invalid, as without it recovery is very likely to begin from the wrong WAL recovery location. I think it is appropriate that 9.2.4 refuses to cooperate in those circumstances, and it was a bug that 9.2.3 did allow it. Do you have a "backup_label" file? > Or, must I now include pg_xlog files when taking base backups with 9.2.4, > contrary to the documentation? > You do not need to include pg_xlog, but you do need to include backup_label. And you always did need to include it--if you were not including it in the past, then you were playing with fire and is only due to luck that your database survived. Cheers, Jeff
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