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* Backup of shut down standby does not work?
@ 2014-02-13 08:37 Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at>
0 siblings, 2 replies; 5+ messages in thread
From: Jürgen Fuchsberger @ 2014-02-13 08:37 UTC (permalink / raw)
To: pgsql-admin
Hi all,
I have a master-slave configuration running the master with WAL
archiving enabled and the slave in recovery mode reading back the WAL
files from the master (as described in
http://www.postgresql.org/docs/9.1/static/continuous-archiving.html#BACKUP-PITR-RECOVERY
Now I am doing the following backup strategy:
1) Stop slave (fast shutdown).
2) Rsync to backup fileserver
3) Start slave.
I just tried to recover a Backup which *failed* with the following errors:
2014-02-13 08:34:05 CET LOG: starting archive recovery
2014-02-13 08:34:05 CET LOG: incomplete startup packet
cp: cannot stat `/var/postgres-wal/00000001000001E300000061': No such
file or directory
2014-02-13 08:34:05 CET LOG: could not open file
"pg_xlog/00000001000001E300000061" (log file 483, segment 97): No such
file or directory
2014-02-13 08:34:05 CET LOG: invalid primary checkpoint record
cp: cannot stat `/var/postgres-wal/00000001000001E300000060': No such
file or directory
2014-02-13 08:34:05 CET LOG: could not open file
"pg_xlog/00000001000001E300000060" (log file 483, segment 96): No such
file or directory
2014-02-13 08:34:05 CET LOG: invalid secondary checkpoint record
2014-02-13 08:34:05 CET PANIC: could not locate a valid checkpoint record
2014-02-13 08:34:06 CET FATAL: the database system is starting up
2014-02-13 08:34:06 CET FATAL: the database system is starting up
2014-02-13 08:34:07 CET FATAL: the database system is starting up
2014-02-13 08:34:07 CET FATAL: the database system is starting up
2014-02-13 08:34:07 CET LOG: startup process (PID 16882) was terminated
by signal 6: Aborted
2014-02-13 08:34:08 CET LOG: aborting startup due to startup process
failure
So it seems the server is missing the archived WAL files which are not
in the backup. Some time ago there was a discussion about this
(http://www.postgresql.org/message-id/CAFwQ8rd+oDkLG4KWkux=2jwNinBnuwhY8DH3W-_58MGO1m3=Lg@mail.gmail....)
and it turned out that the WAL archive is not needed, only files in
pg_xlog which I *did* backup.
So am I doing something wrong or are the WAL files really needed?
Best,
Juergen
Attachments:
signature.asc (application/pgp-signature, 290B) download
^ permalink raw reply [nested|flat] 5+ messages in thread
* Re: Backup of shut down standby does not work?
@ 2014-02-13 09:07 Dubravko Sever <Dubravko.Sever@srce.hr>
parent: Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at>
1 sibling, 1 reply; 5+ messages in thread
From: Dubravko Sever @ 2014-02-13 09:07 UTC (permalink / raw)
To: Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at>; pgsql-admin
Hi,
Do you have recovery.conf and archive command well defined?. Because restore command look for wall files located on slave inside of `/var/postgres-wal/.
Dubravko
--
Dubravko Sever
Sektor za računalne sustave
Sveučilište u Zagrebu, Sveučilišni računski centar (Srce), www.srce.unizg.hr
Dubravko.Sever@srce.hr, tel: +385 1 616 5807, fax: +385 1 616 5559
> -----Original Message-----
> From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-
> owner@postgresql.org] On Behalf Of Jürgen Fuchsberger
> Sent: Thursday, February 13, 2014 9:38 AM
> To: pgsql-admin@postgresql.org
> Subject: [ADMIN] Backup of shut down standby does not work?
>
> Hi all,
>
> I have a master-slave configuration running the master with WAL archiving
> enabled and the slave in recovery mode reading back the WAL files from the
> master (as described in
> http://www.postgresql.org/docs/9.1/static/continuous-
> archiving.html#BACKUP-PITR-RECOVERY
>
> Now I am doing the following backup strategy:
>
> 1) Stop slave (fast shutdown).
> 2) Rsync to backup fileserver
> 3) Start slave.
>
> I just tried to recover a Backup which *failed* with the following errors:
>
> 2014-02-13 08:34:05 CET LOG: starting archive recovery
> 2014-02-13 08:34:05 CET LOG: incomplete startup packet
> cp: cannot stat `/var/postgres-wal/00000001000001E300000061': No such file
> or directory
> 2014-02-13 08:34:05 CET LOG: could not open file
> "pg_xlog/00000001000001E300000061" (log file 483, segment 97): No such file
> or directory
> 2014-02-13 08:34:05 CET LOG: invalid primary checkpoint record
> cp: cannot stat `/var/postgres-wal/00000001000001E300000060': No such file
> or directory
> 2014-02-13 08:34:05 CET LOG: could not open file
> "pg_xlog/00000001000001E300000060" (log file 483, segment 96): No such file
> or directory
> 2014-02-13 08:34:05 CET LOG: invalid secondary checkpoint record
> 2014-02-13 08:34:05 CET PANIC: could not locate a valid checkpoint record
> 2014-02-13 08:34:06 CET FATAL: the database system is starting up
> 2014-02-13 08:34:06 CET FATAL: the database system is starting up
> 2014-02-13 08:34:07 CET FATAL: the database system is starting up
> 2014-02-13 08:34:07 CET FATAL: the database system is starting up
> 2014-02-13 08:34:07 CET LOG: startup process (PID 16882) was terminated by
> signal 6: Aborted
> 2014-02-13 08:34:08 CET LOG: aborting startup due to startup process failure
>
> So it seems the server is missing the archived WAL files which are not in the
> backup. Some time ago there was a discussion about this
> (http://www.postgresql.org/message-
> id/CAFwQ8rd+oDkLG4KWkux=2jwNinBnuwhY8DH3W-
> _58MGO1m3=Lg@mail.gmail.com)
> and it turned out that the WAL archive is not needed, only files in pg_xlog
> which I *did* backup.
>
> So am I doing something wrong or are the WAL files really needed?
>
> Best,
> Juergen
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^ permalink raw reply [nested|flat] 5+ messages in thread
* Re: Backup of shut down standby does not work?
@ 2014-02-13 14:01 Scott Ribe <scott_ribe@elevated-dev.com>
parent: Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at>
1 sibling, 1 reply; 5+ messages in thread
From: Scott Ribe @ 2014-02-13 14:01 UTC (permalink / raw)
To: Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at>; +Cc: pgsql-admin
On Feb 13, 2014, at 1:37 AM, Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at> wrote:
> So am I doing something wrong or are the WAL files really needed?
If you're backing up a live server, and there is activity during the backup...
You're missing step 1.5: select pg_start_backup('whatever') on the server.
--
Scott Ribe
scott_ribe@elevated-dev.com
http://www.elevated-dev.com/
(303) 722-0567 voice
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^ permalink raw reply [nested|flat] 5+ messages in thread
* Re: Backup of shut down standby does not work?
@ 2014-02-13 15:41 Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at>
parent: Scott Ribe <scott_ribe@elevated-dev.com>
0 siblings, 0 replies; 5+ messages in thread
From: Jürgen Fuchsberger @ 2014-02-13 15:41 UTC (permalink / raw)
To: Scott Ribe <scott_ribe@elevated-dev.com>; +Cc: pgsql-admin
On 02/13/2014 03:01 PM, Scott Ribe wrote:
> On Feb 13, 2014, at 1:37 AM, Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at> wrote:
>
>> So am I doing something wrong or are the WAL files really needed?
>
> If you're backing up a live server, and there is activity during the backup...
I know, but I am backing up a shut down server.
Juergen
>
> You're missing step 1.5: select pg_start_backup('whatever') on the server.
>
Attachments:
signature.asc (application/pgp-signature, 290B) download
^ permalink raw reply [nested|flat] 5+ messages in thread
* Re: Backup of shut down standby does not work?
@ 2014-02-13 15:42 Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at>
parent: Dubravko Sever <Dubravko.Sever@srce.hr>
0 siblings, 0 replies; 5+ messages in thread
From: Jürgen Fuchsberger @ 2014-02-13 15:42 UTC (permalink / raw)
To: pgsql-admin
On 02/13/2014 10:07 AM, Dubravko Sever wrote:
> Hi,
>
> Do you have recovery.conf and archive command well defined?. Because restore command look for wall files located on slave inside of `/var/postgres-wal/.
>
> Dubravko
>
Yes, the config is correct. The only problem is the missing files in
/var/postgres-wal (which I expected not to be needed).
I think it should work without the recovery.conf too (since I expect the
backup to be consistent) , which results in this error:
2014-02-13 11:14:49 CET LOG: incomplete startup packet
2014-02-13 11:14:49 CET LOG: database system was shut down in recovery
at 2013-12-25 18:00:03 CET
2014-02-13 11:14:49 CET LOG: could not open file
"pg_xlog/00000001000001E300000061" (log file 483, segment 97): No such
file or directory
2014-02-13 11:14:49 CET LOG: invalid primary checkpoint record
2014-02-13 11:14:49 CET LOG: could not open file
"pg_xlog/00000001000001E300000060" (log file 483, segment 96): No such
file or directory
2014-02-13 11:14:49 CET LOG: invalid secondary checkpoint record
2014-02-13 11:14:49 CET PANIC: could not locate a valid checkpoint record
2014-02-13 11:14:49 CET FATAL: the database system is starting up
2014-02-13 11:14:50 CET FATAL: the database system is starting up
2014-02-13 11:14:53 CET FATAL: the database system is starting up
2014-02-13 11:14:53 CET FATAL: the database system is starting up
2014-02-13 11:14:54 CET LOG: startup process (PID 8277) was terminated
by signal 6: Aborted
2014-02-13 11:14:54 CET LOG: aborting startup due to startup process
failure
Juergen.
Attachments:
signature.asc (application/pgp-signature, 290B) download
^ permalink raw reply [nested|flat] 5+ messages in thread
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-- links below jump to the message on this page --
2014-02-13 08:37 Backup of shut down standby does not work? Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at>
2014-02-13 09:07 ` Dubravko Sever <Dubravko.Sever@srce.hr>
2014-02-13 15:42 ` Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at>
2014-02-13 14:01 ` Scott Ribe <scott_ribe@elevated-dev.com>
2014-02-13 15:41 ` Jürgen Fuchsberger <juergen.fuchsberger@uni-graz.at>
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