From: Philip Molter <philip@datafoundry.com>
To: linux-raid@vger.kernel.org
Subject: Re: raid1 error handling and faulty drives
Date: Tue, 26 Feb 2008 10:23:57 -0600 [thread overview]
Message-ID: <47C43D1D.3020103@datafoundry.com> (raw)
In-Reply-To: <18143.36574.398690.36732@notabene.brown>
Neil Brown wrote:
> I've recently become aware that we really need FAILFAST - possibly for
> all IO from RAID1/5. Modern drives don't need any retry at the OS
> level - if the retry in the firmware cannot get the data, nothing will.
>
> Thanks. I agree that we do need something along these lines. It
> might be a while before I can give the patch the brainspace it
> deserves as I am travelling this fortnight.
>
> NeilBrown
Neil,
Was anything ever done with this idea? I can throw my hat into the
this-is-a-big-problem ring. I oftentimes have a RAID1 disk fail on a
heavy-I/O system and the system basically needs to be power-cycled if it
is to come back up within the hour (any OS access to that RAID will hang).
Any word would be appreciated.
Philip
prev parent reply other threads:[~2008-02-26 16:23 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-05 22:22 raid1 error handling and faulty drives Mike Accetta
2007-09-06 5:23 ` Neil Brown
2007-09-07 22:03 ` Mike Accetta
2008-02-26 16:23 ` Philip Molter [this message]
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