From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Mark Lord <liml@rtr.ca>
Cc: Tejun Heo <htejun@gmail.com>, jeff@garzik.org, linux-ide@vger.kernel.org
Subject: Re: [PATCHSET #upstream] libata: improve FLUSH error handling
Date: Thu, 27 Mar 2008 15:31:00 +0000 [thread overview]
Message-ID: <20080327153100.6d834986@core> (raw)
In-Reply-To: <47EBB09F.9070607@rtr.ca>
> In 18 years of IDE/ATA development,
> I have *never* seen a hard disk drive report a WRITE error.
You don't try hard enough. Also a cache flush write error is more likely
than a write reporting the error, because with caching enabled the disk
only finds out when it comes to try and flush or you do.
> Which makes sense, if you think about it -- it's rewriting the sector
> with new ECC info, so it *should* succeed. The only case where it won't,
> is if the sector has been marked as "bad" internally, and the drive is
> too dumb to try anyways after it runs out of remap space.
Or you have a drive with raid optimised firmware, a magneto-optical or
other similar cases.
Alan
next prev parent reply other threads:[~2008-03-27 15:48 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-27 10:14 [PATCHSET #upstream] libata: improve FLUSH error handling Tejun Heo
2008-03-27 10:14 ` [PATCH 1/4] libata: make ata_tf_to_lba[48]() generic Tejun Heo
2008-04-04 7:45 ` Jeff Garzik
2008-03-27 10:14 ` [PATCH 2/4] libata: implement ATA_QCFLAG_RETRY Tejun Heo
2008-03-27 10:14 ` [PATCH 3/4] libata: kill unused ata_flush_cache() Tejun Heo
2008-03-27 10:14 ` [PATCH 4/4] libata: improve FLUSH error handling Tejun Heo
2008-04-04 7:46 ` Jeff Garzik
2008-03-27 10:23 ` Debug patch to induce errors on FLUSH Tejun Heo
2008-03-27 14:24 ` [PATCHSET #upstream] libata: improve FLUSH error handling Mark Lord
2008-03-27 14:35 ` Mark Lord
2008-03-27 15:31 ` Alan Cox [this message]
2008-03-27 18:01 ` Ric Wheeler
2008-03-28 1:57 ` Tejun Heo
2008-03-28 2:33 ` Mark Lord
2008-03-28 13:36 ` Ric Wheeler
2008-03-28 14:52 ` Tejun Heo
2008-03-28 14:53 ` Ric Wheeler
2008-03-28 15:16 ` Alan Cox
2008-03-28 16:57 ` Ric Wheeler
2008-03-28 16:04 ` Mark Lord
2008-03-27 17:53 ` Ric Wheeler
2008-03-27 18:52 ` Jeff Garzik
2008-03-27 20:23 ` Ric Wheeler
2008-03-28 7:46 ` Andi Kleen
2008-03-28 8:30 ` Tejun Heo
2008-03-28 8:48 ` Andi Kleen
2008-03-28 8:53 ` Tejun Heo
2008-03-27 17:51 ` Ric Wheeler
2008-03-27 18:53 ` Jeff Garzik
2008-03-27 22:00 ` Alan Cox
2008-03-28 2:02 ` Tejun Heo
2008-03-28 9:48 ` Alan Cox
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