| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Jeff Frost <jeff(at)frostconsultingllc(dot)com> |
| Cc: | pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: ext3 with data=ordered |
| Date: | 2006-01-31 21:33:44 |
| Message-ID: | 200601312133.k0VLXia10223@candle.pha.pa.us |
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| Lists: | pgsql-admin |
Jeff Frost wrote:
> Is it reasonable to mount the PGDATA filesystem with data=writeback on ext3 as
> long as the PGXLOG filesystem is mounted data=ordered and fsync=on? Or is
> this only acceptable if you have battery backed controllers?
data=writeback is fine on all PostgreSQL file systems, including pg_xlog
because we fsync() it on commit. In fact it is the recommended mount
option for ext3.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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