From: Olaf Weber <olaf@sgi.com>
To: Daniele Nuzzo - Readytec SPA <d.nuzzo@readytec.it>
Cc: xfs@oss.sgi.com
Subject: Re: umount xfs filesystem
Date: Fri, 24 Jul 2009 14:52:42 +0200 [thread overview]
Message-ID: <bzytz12kztx.fsf@fransum.emea.sgi.com> (raw)
In-Reply-To: <4A66C5E7.7050408@readytec.it> (Daniele Nuzzo's message of "Wed, 22 Jul 2009 09:55:19 +0200")
Daniele Nuzzo writes:
> hi,
> I think I need your advice-opinion ...
> I set up a system like CentOS 5.3, lvm, drbd 8.2, various systems raid
> (Adaptec aacraid or LSI MegaRAID with or without write back cache)
> after some time of work (a few hours or days) do the umount is
> slow... even a few minutes ... why?
> I have already disabled barrier and write cache on drbd, but not on
> the controller or the sas drives... ideas?
> thanks a lot.
> p.s.
> drbd partitions formatted with the default options.
On unmount the system has flush all dirty data to disk. Depending on
the amount of data in memory, this might take a while.
I'm not claiming this is definitely the case here, but it is an
obvious candidate.
--
Olaf Weber SGI Phone: +31(0)30-6696752
Veldzigt 2b Fax: +31(0)30-6696799
Technical Lead 3454 PW de Meern Vnet: 955-7151
Storage Software The Netherlands Email: olaf@sgi.com
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next parent reply other threads:[~2009-07-24 12:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4A66C5E7.7050408@readytec.it>
2009-07-24 12:52 ` Olaf Weber [this message]
2009-07-24 13:48 ` umount xfs filesystem Michael Monnerie
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