Re: Req. for some help with resolving the error "pg_basebackup: could not get WAL end position from server: FATAL: requested WAL segment"

More than likely your keep_wal_segments setting is too low. How long is the pg_basebackup taking? Remember that segments are generated about every 5 minutes, so if the backup takes an hour, you need at least 12 segments stored. At 2 hours, you need 24 etc., I'd set the value to about 12.2 segments/hour of backup.
--
Jay

Sent from my iPad

> On Dec 5, 2016, at 1:57 PM, Tharmarajah, Sam <sambavan(dot)tharmarajah(at)usask(dot)ca> wrote:
>
> Hi
>
> I am a newbie to postgres. We are on postgres 9.1 running on RedHat 6. When we do the postgres backups we are noticing the following errors
>
> pg_basebackup: could not get WAL end position from server: FATAL: requested WAL segment 000000010000020B00000040 has already been removed
>
> But when I look into pg_xlog, I notice
>
> 000000010000020B00000040.00000118.backup
>
>
> May I know how to resolve this error? Are the backups done with these errors, recoverable?
>
>
> Thanks in advance for your support.
>
> Thanx,
> Sam
>
>
>
>