| From: | Florian Weimer <fweimer(at)bfk(dot)de> |
|---|---|
| To: | "Koth, Christian (DWBI)" <Christian(dot)Koth(at)smiths-heimann(dot)com> |
| Cc: | "Milen Kulev" <makulev(at)gmx(dot)net>, <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: XFS filessystem for Datawarehousing |
| Date: | 2006-08-03 07:17:12 |
| Message-ID: | 8264haffuv.fsf@mid.bfk.de |
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| Lists: | pgsql-performance |
* Christian Koth:
> For what reason are you planning to use a journaling FS? I think
> using WAL, fsyncing every transaction and using a journaling FS is
> tautologous.
The journal is absolutely required to preserve the integrity of the
file system's own on-disk data structures after a crash. Even if
you've got a trustworthy file system checker (there are surprisingly
few of them, especially for advanced file systems without fixed data
structure locations), running it after a crash usually leads to
unacceptably high downtime.
--
Florian Weimer <fweimer(at)bfk(dot)de>
BFK edv-consulting GmbH http://www.bfk.de/
Durlacher Allee 47 tel: +49-721-96201-1
D-76131 Karlsruhe fax: +49-721-96201-99
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