Re: Linux ext3fs -- periodic "automatic" ? filesystem checks ?
From: Peter Hitchman <pjhoraclel_at_gmail.com>
Date: Sat, 14 Nov 2009 16:38:45 +0000
Message-ID: <5e317f310911140838w385cd4d6qf2c150899a7c6f2_at_mail.gmail.com>
Hi,
Interesting, I have only seen the fsck running after the reboot of a machine and the last time it was a OEL box and the time it took was painful. Fortunately for me it was an application server and the production database is RAC using ASM and for those machines the ext3 file systems are very small. But I suspect all of our ext3 file systems have the same settings, which as pointed out is a bad idea. But I did not think that fsck checks could be done online, but maybe there are different levels? After all you cannot have an fs being frozen just because its due a check.
Date: Sat, 14 Nov 2009 16:38:45 +0000
Message-ID: <5e317f310911140838w385cd4d6qf2c150899a7c6f2_at_mail.gmail.com>
Hi,
Interesting, I have only seen the fsck running after the reboot of a machine and the last time it was a OEL box and the time it took was painful. Fortunately for me it was an application server and the production database is RAC using ASM and for those machines the ext3 file systems are very small. But I suspect all of our ext3 file systems have the same settings, which as pointed out is a bad idea. But I did not think that fsck checks could be done online, but maybe there are different levels? After all you cannot have an fs being frozen just because its due a check.
Regards
Pete
On Sat, Nov 14, 2009 at 4:23 PM, Greg Rahn <greg_at_structureddata.org> wrote:
> The check usually happens on reboot so it can cause a significant
> increase in the time before the system is available. Probably
> something to be aware of for HA type systems.
>
> On Sat, Nov 14, 2009 at 7:38 AM, Hemant K Chitale
> <hkchital_at_singnet.com.sg> wrote:
> > Has anyone noticed / documented / measured the impact of ext3fs periodic
> > filesystem checks that Ronny Egner's talks about at
> >
> >
> http://blog.ronnyegner-consulting.de/2009/10/01/ext3-beware-of-periodic-file-system-checks/
>
>
> --
> Regards,
> Greg Rahn
> http://structureddata.org
> --
> http://www.freelists.org/webpage/oracle-l
>
>
>
-- http://www.freelists.org/webpage/oracle-lReceived on Sat Nov 14 2009 - 10:38:45 CST