Re: pgsql: Validate page level checksums in base backups

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От Magnus Hagander
Тема Re: pgsql: Validate page level checksums in base backups
Дата
Msg-id CABUevExQa00NOeZd7N7faSZOnL+gtThKSDv2d5zxAP7Cp9YtLA@mail.gmail.com
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Ответ на Re: pgsql: Validate page level checksums in base backups  (Andres Freund <andres@anarazel.de>)
Ответы Re: pgsql: Validate page level checksums in base backups  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: pgsql: Validate page level checksums in base backups  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Tue, Apr 3, 2018 at 7:13 PM, Andres Freund <andres@anarazel.de> wrote:
On 2018-04-03 11:52:26 +0000, Magnus Hagander wrote:
> Validate page level checksums in base backups
>
> When base backups are run over the replication protocol (for example
> using pg_basebackup), verify the checksums of all data blocks if
> checksums are enabled. If checksum failures are encountered, log them
> as warnings but don't abort the backup.
>
> This becomes the default behaviour in pg_basebackup (provided checksums
> are enabled on the server), so add a switch (-k) to disable the checks
> if necessary.
>
> Author: Michael Banck
> Reviewed-By: Magnus Hagander, David Steele
> Discussion: https://postgr.es/m/20180228180856.GE13784@nighthawk.caipicrew.dd-dns.de

Hm, something isn't quite right with the test:
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=pogona&dt=2018-04-03%2016%3A10%3A01

# WARNING:  6 total checksum verification failures
# pg_basebackup: checksum error occured
# '
#     doesn't match '(?^s:^WARNING.*7 total checksum verification failures)'

Yeah, there's clearly a second problem here.

I'm stuck in meetings most of tonight, so I might not get to it right away. If someonen else figures it out meanwhile please do, otherwise I'll get to it as soon as I can. 


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