From: Andi Kleen <andi@firstfloor.org>
To: Tejun Heo <tj@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>,
linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: Re: 2.6.34 PDC20268 PATA IO error loop makes system unusable
Date: Mon, 14 Jun 2010 09:53:50 +0200 [thread overview]
Message-ID: <20100614075350.GC17092@basil.fritz.box> (raw)
In-Reply-To: <4C15DDA0.3020409@kernel.org>
On Mon, Jun 14, 2010 at 09:43:28AM +0200, Tejun Heo wrote:
> > sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
> > sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 f0 08 00 01 00 00
> > sd 11:0:0:0: [sdd] Unhandled error code
> > sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
> > sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 f1 08 00 01 00 00
> > sd 11:0:0:0: [sdd] Unhandled error code
> > sd 11:0:0:0: [sdd] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
> > sd 11:0:0:0: [sdd] CDB: Write(10): 2a 00 00 e5 f2 08 00 01 00 00
> >
> > same messages repeating forever, just with CDB changing occasionally.
> >
> > ....
> >
> > not stopping until I reset the box.
>
> Did you have a lot of dirty pages? It looks like upper layer is
Yes, there was a dd running.
> trying to flush all the dirty buffers and SCSI is a tad bit too
> verbose about failing each IO w/ DID_BAD_TARGET thus taking a very
A bit too verbose? That's really an euphemism ...
During the CDB: Write loop the console was totally unusable!
And I think the fsyncs in syslogd completely made the performance
tank.
So basically it was a "reset button only" situation.
When the device is gone what's the point in giving a message
more than once? Can't the requests just be silently failed in this
case?
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2010-06-14 7:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-13 15:48 2.6.34 PDC20268 PATA IO error loop makes system unusable Andi Kleen
2010-06-14 7:43 ` Tejun Heo
2010-06-14 7:53 ` Andi Kleen [this message]
2010-06-14 7:59 ` Tejun Heo
2010-06-14 9:22 ` Andi Kleen
2010-06-14 16:20 ` James Bottomley
2010-06-14 11:17 ` Alan Cox
2010-06-14 11:29 ` Andi Kleen
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