From: Eric Shubert <ejs@shubes.net>
To: linux-raid@vger.kernel.org
Subject: Re: MD raid and different elevators (disk i/o schedulers)
Date: Thu, 29 Jul 2010 10:23:31 -0700 [thread overview]
Message-ID: <i2sdej$hhu$2@dough.gmane.org> (raw)
In-Reply-To: <4C51540E.9050005@kurgan.org>
Fabio Muzzi wrote:
>
> I have tried to find information about this question in google, but
> found nothing.
>
> The question is: are there issues using different disk i/o schedulers
> (by appending elevator=xxx to the kernel boot command line) when using
> md RAID1 or RAID5?
>
> I seem to remember that someone told me that using elevator=deadline can
> cause perfectly good disks to be kicked from the RAID because of some
> latency issues that make the disk seem unresponsive (and dead) to the
> raid software.
>
> Is this true? Are there compatibility issues using different i/o
> schedulers with software raid?
>
>
> Thanks
>
I've been running several vmware server hosts with elevator=deadline on
raid1 for a year or so now, with no problems.
--
-Eric 'shubes'
next prev parent reply other threads:[~2010-07-29 17:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-29 10:12 MD raid and different elevators (disk i/o schedulers) Fabio Muzzi
2010-07-29 10:53 ` Mikael Abrahamsson
2010-07-29 17:23 ` Eric Shubert [this message]
2010-07-29 22:32 ` Fabio Muzzi
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