Re: Backup From HotStandby - Mailing list pgsql-admin

From Licio Matos
Subject Re: Backup From HotStandby
Date
Msg-id CAK6Tc4Ocmc-AhC1m7TYPGOvb32EaQPPygn4WSK5r--j72OhY5w@mail.gmail.com
Whole thread Raw
In response to Re: Backup From HotStandby  (Rui DeSousa <rui@crazybean.net>)
Responses Re: Backup From HotStandby  (Rui DeSousa <rui@crazybean.net>)
List pgsql-admin
@Rui DeSousa 

I am running this on the primary, the question is if i can run this same script on the replica.

Tks
Licio Matos 




Em qua, 28 de ago de 2019 às 17:09, Rui DeSousa <rui@crazybean.net> escreveu:


> On Aug 28, 2019, at 3:31 PM, Licio Matos <licio.matos@gmail.com> wrote:
>
> I have been using a lvm snapshot, all the database files are on the same disk.

Sounds good; note that the filesystem will also need recovery thus you may want to consider trying to quiesce the filesystem before creating the snapshot to avoid filesystem issues.   


> My script start the pg_start_backup() make a lvm snapshot stop the backup and then copy the files do another filesystem from the snap and after to the tape.

Hmm… are you running that on the replica? It should fail; unless you’re running it on the primary.

I wouldn’t bother with pg_start_backup() to take a snapshot backup on the replica.  When recovering, the database will first do its crash recovery and then apply any WAL files needed to reach your recovery target time.

pgsql-admin by date:

Previous
From: Rui DeSousa
Date:
Subject: Re: Backup From HotStandby
Next
From: Rui DeSousa
Date:
Subject: Re: Backup From HotStandby