From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: Possibly SATA related freeze killed networking and RAID Date: Wed, 28 Nov 2007 10:55:14 +0900 Message-ID: <474CCA82.7030000@gmail.com> References: <20071120220512.46b9e975@the-village.bc.nu> <20071126120649.GC4701@ucw.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from nz-out-0506.google.com ([64.233.162.228]:25360 "EHLO nz-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758131AbXK1Bza (ORCPT ); Tue, 27 Nov 2007 20:55:30 -0500 Received: by nz-out-0506.google.com with SMTP id s18so928768nze for ; Tue, 27 Nov 2007 17:55:29 -0800 (PST) In-Reply-To: <20071126120649.GC4701@ucw.cz> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Pavel Machek Cc: Alan Cox , noah , Linux Kernel Mailing List , linux-ide@vger.kernel.org Pavel Machek wrote: > Hi! > >>> kernel: [734344.717844] irq 21: nobody cared (try booting with the >>> "irqpoll" option) >>> kernel: [734344.717866] >> Your machine decided to emit interrupt 21 without an apparent reason. >> Whatever caused that made the kernel shut down IRQ 21 at which point the >> disk drives on that IRQ were no longer being serviced. Everything on IRQ >> 21 would have died - which may be why your networking failed too. > > Hmm, perhaps that 'nobody cared' message should be worded more > strongly, and printed and KERN_CRIT? Agreed. Nobody cared on ATA controllers is usually very effective at taking the whole machine down. Is there any reason why we don't turn on irqpoll on turned off IRQs automatically? Thanks. -- tejun