From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: ata exception messages Date: Wed, 04 Jun 2008 15:38:39 +0300 Message-ID: <48468CCF.8070805@qumranet.com> References: <1212504548.6885.13.camel@beth-ubuntu> <1212582914.6885.20.camel@beth-ubuntu> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Beth Kon Return-path: Received: from bzq-179-150-194.static.bezeqint.net ([212.179.150.194]:50511 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751652AbYFDMih (ORCPT ); Wed, 4 Jun 2008 08:38:37 -0400 In-Reply-To: <1212582914.6885.20.camel@beth-ubuntu> Sender: kvm-owner@vger.kernel.org List-ID: Beth Kon wrote: > On Tue, 2008-06-03 at 10:49 -0400, Beth Kon wrote: > >> I'm running an Ubuntu 7.10 guest on a kvm git build (commit >> 3125ffd6edb9384b3e418fc08fea99e7e1548a96) and am seeing repeated >> messages like: >> >> [3393.124685] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 >> frozen >> [3393.127599] ata1.00: cmd ca/00:30:af:c1:48/00:00:00:00:00/e0 tag 0 cdb >> 0x0 data 4096 out >> >> I see that they're coming from ata_eh_link_report in >> drivers/ata/libata-eh.c but am not familiar enough with this code to >> understand what the problem is. >> >> Does anyone have any idea what might be causing this? >> >> > I discovered that these messages were associated with my disk image being NFS > mounted. > Interesting. Is it an exceptionally slow server (or perhaps, on a lossy network)? I can see how timeouts can annoy the ide driver, but I've never seen this myself. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic.