From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Warner Subject: Re: libata oops 2.6.11-rc4 yesterdays BK Date: Wed, 16 Feb 2005 15:40:33 -0600 Message-ID: <20050216154033.I10699@florence.linkmargin.com> References: <4212CBD6.7020703@wasp.net.au> <42132803.2080701@wasp.net.au> <4213821D.1030203@pobox.com> <4213B2F8.2070800@wasp.net.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Received: from ms-smtp-04.rdc-kc.rr.com ([24.94.166.116]:34488 "EHLO ms-smtp-04.rdc-kc.rr.com") by vger.kernel.org with ESMTP id S262082AbVBPVkk (ORCPT ); Wed, 16 Feb 2005 16:40:40 -0500 Content-Disposition: inline In-Reply-To: <4213B2F8.2070800@wasp.net.au>; from brad@wasp.net.au on Thu, Feb 17, 2005 at 12:54:16AM +0400 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Brad Campbell Cc: Jeff Garzik , linux-ide@vger.kernel.org Brad Campbell wrote: > [...] > Actually, I'm not sure without the libata dev patch as that removes SMART support, and I'm not > convinced that my smartd polling every 20 minutes does not have something to do with it. All I know > is the older kernel seems to cope. We'll see. 320 minutes left on this rebuild. I expect it will be > done in the morning if all goes according to plan. (With the 2.6.11 kernel it never survived past > about 25% rebuilt) Can you find time to try it without smartd active ? You report running a uni-processor system, and I have only seen PIO problems with (fast) SMP systems in my testing, but I am forming the opinion that libata-PIO functions are in need of a minor overhaul. I have seen issues where port activity monopolised data-paths/arbitration inside chipsets such that the PIO operations would appear to time out. Since you're doing a raid rebuild, perhaps the I/O load is causing something similar to occur. -- andyw@pobox.com Andy Warner Voice: (612) 801-8549 Fax: (208) 575-5634