From: Christoph Hellwig <hch@lst.de>
To: "Scott M. Ferris" <sferris@acm.org>
Cc: Mike Christie <mikenc@us.ibm.com>,
linux-iscsi-devel <linux-iscsi-devel@lists.sourceforge.net>,
linux-scsi@vger.kernel.org
Subject: Re: [linux-iscsi-devel] [question] deferred sense
Date: Wed, 5 Jan 2005 16:23:33 +0100 [thread overview]
Message-ID: <20050105152333.GA1453@lst.de> (raw)
In-Reply-To: <20050105152112.GA8472@visi.com>
On Wed, Jan 05, 2005 at 09:21:12AM -0600, Scott M. Ferris wrote:
> On Wed, Jan 05, 2005 at 10:21:44AM +0100, Christoph Hellwig wrote:
> >
> > The kernel still doesn't hadle deferred sense correctly. In fact I'm
> > not sure it's entirely possible to handle deferred sense correctly.
> >
> > The iscsi driver variant of "translating" it to normal sense data and
> > that for disks only certainly doesn't make much sense.
>
> To be more specific, there were some devices that would fail a command
> and return deferred sense. The command didn't complete at the target,
> and the kernel wasn't retrying it because the sense was deferred
> rather than current. For those devices, the translation produced the
> desired retry.
Do you remember these devices? Might be worth adding a midlayer
blacklist entry for them.
And I suspect we should get linux-scsi in the loop for the discussion
about deferred sense handling.
next parent reply other threads:[~2005-01-05 15:23 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <41DB21D7.5080904@us.ibm.com>
[not found] ` <20050104234700.GA18343@visi.com>
[not found] ` <20050105092144.GB26793@lst.de>
[not found] ` <20050105152112.GA8472@visi.com>
2005-01-05 15:23 ` Christoph Hellwig [this message]
2005-01-05 16:44 ` [linux-iscsi-devel] [question] deferred sense James Bottomley
2005-01-06 16:37 ` Tom Coughlan
2005-01-07 0:06 ` Douglas Gilbert
2005-01-11 11:44 ` Douglas Gilbert
2005-01-05 17:47 Salyzyn, Mark
2005-01-05 21:51 ` James Bottomley
2005-01-05 22:58 ` Matthew Wilcox
2005-01-06 23:09 ` Bryan Henderson
-- strict thread matches above, loose matches on Subject: below --
2005-01-06 14:23 Salyzyn, Mark
2005-01-06 14:38 ` James Bottomley
2005-01-06 14:57 Salyzyn, Mark
2005-01-06 15:50 ` James Bottomley
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