pg_basebackup problem... - Mailing list pgsql-admin

From John Scalia
Subject pg_basebackup problem...
Date
Msg-id CABzCKRAOWbNLjivMXKaxXBOxh=LeEU2Rh_GeC_KOMAH9bOZ95A@mail.gmail.com
Whole thread Raw
Responses Re: pg_basebackup problem...  (John Scalia <jayknowsunix@gmail.com>)
List pgsql-admin
Hi all,

We've had a problem surface with the current pg_basebackup procedure we were following. Now, I want to explain that this pre-dates me and I recommended some additional flags to use when running it, specifically I told the group to include "-X f -c fast". Here is the old version they were invoking:

pg_basebackup -P -Ft -Z9 -D /var/lib/pgsql/9.2/backups/<date_stamped_backup_filename>

The problem we're having, is the tarball these generated will not successfully restore. That is, the tarball looks OK, but the resultant database cannot be started as the pg_xlog directory is empty and postgres says it can't locate the checkpoint segment to sanely initialize.

This really doesn't make sense to me. Shouldn't pg_basebackup capture the contents of the pg_xlog directory without needing to use a "-X f" flag? Otherwise, why could pg_basebackup create a "backup" that really is not usable? I'm really just trying to determine why pg_xlog is empty , if it really shouldn't be.
--
Jay

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