From: David Greaves <david@dgreaves.com>
To: Molle Bestefich <molle.bestefich@gmail.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: libata retry - disable?
Date: Tue, 18 Apr 2006 15:44:38 +0100 [thread overview]
Message-ID: <4444FB56.9060806@dgreaves.com> (raw)
In-Reply-To: <62b0912f0604172330g274c286fje159f9d920d5ec61@mail.gmail.com>
Molle Bestefich wrote:
> Does anyone know of a way to disable libata's 5-time retry when a read fails?
>
> It has the effect of causing every failed sector read to take 6
> seconds before it fails, causing raid5 rebuilds to go awfully slow.
> It's generally undesirable too, when you've got RAID on top that can
> write replacement data onto the failed sectors..
>
> Log showing a failed sector:
> Apr 18 09:49:53 linux kernel: end_request: I/O error, dev sda, sector 131124407
> Apr 18 09:49:55 linux kernel: ata1: no sense translation for status: 0x51
> Apr 18 09:49:55 linux kernel: ata1: translated ATA stat/err 0x51/00 to
> SCSI SK/ASC/ASCQ 0x3/11/04
>
What kernel Molle?
There were some nasties in 2.6.15 to do with FUA. Have a look for my
postings in linux-ide (my problems are still not entirely resolved).
(I got very used to mdadm --force and xfs_repair during that experience!)
David
--
next prev parent reply other threads:[~2006-04-18 14:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-18 6:30 libata retry - disable? Molle Bestefich
2006-04-18 6:50 ` Jeff Garzik
2006-04-18 14:44 ` David Greaves [this message]
2006-04-18 16:49 ` Molle Bestefich
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