linux-kernel - Re: Infinite retries reading the partition table

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Date:	Thu, 30 Nov 2006 23:29:16 -0800
From:	Andrew Morton <akpm@...l.org>
To:	ltuikov@...oo.com
Cc:	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: Infinite retries reading the partition table

On Thu, 30 Nov 2006 22:34:57 -0800 (PST)
Luben Tuikov <ltuikov@...oo.com> wrote:

> --- Andrew Morton <akpm@...l.org> wrote:
> > On Wed, 29 Nov 2006 17:22:48 -0800 (PST)
> > Luben Tuikov <ltuikov@...oo.com> wrote:
> > 
> > > Suppose reading sector 0 always reports an error,
> > > sense key HARDWARE ERROR.
> > > 
> > > What I'm observing is that the request to read sector 0,
> > > reading partition information, is retried forever, ad infinitum.
> > > 
> > > Does anyone have a patch to resolve this? (2.6.19-rc6)
> > > 
> > 
> > Please send a backtrace so we can see where the offending loop occurs.
> 
> I posted a patch to linux-scsi

hm.  Does sending patches to linux-scsi get them applied?  It might, I
don't know.

> which resolves this issue:
> http://marc.theaimsgroup.com/?l=linux-scsi&m=116485834119885&w=2

That looks like it prevents the IO error.  But why was an IO error causing
an infinite loop?   What piece of code was initiating the retries?

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