From owner-freebsd-current@FreeBSD.ORG Wed Oct 26 15:00:43 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 871C6106564A for ; Wed, 26 Oct 2011 15:00:43 +0000 (UTC) (envelope-from lab@gta.com) Received: from mailgate.gta.com (mailgate.gta.com [199.120.225.20]) by mx1.freebsd.org (Postfix) with SMTP id 210908FC08 for ; Wed, 26 Oct 2011 15:00:42 +0000 (UTC) Received: (qmail 31097 invoked by uid 1000); 26 Oct 2011 14:34:01 -0000 Date: 26 Oct 2011 14:34:01 -0000 Message-ID: <20111026143401.31096.qmail@mailgate.gta.com> From: Larry Baird To: freebsd-current@freebsd.org Organization: Global Technology Associates In-Reply-To: <111926.10138.25387@localhost> User-Agent: tin/1.8.3-20070201 ("Scotasay") (UNIX) (FreeBSD/6.3-PRERELEASE (i386)) Subject: Re: Panics after AHCI timeouts X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Oct 2011 15:00:43 -0000 In article <111926.10138.25387@localhost> you wrote: > On Wed, Oct 26, 2011 at 2:27 AM, Alexander Kabaev wrote: > > I do see timeouts on one of my Samsung ST3750330A disks and they > > definitely do not cause any panics. The weird part in my case is that > > disk then immediately reappears as online and mirror zpool can be > > rebuilt by just onlining the disk with 'zpool online ' > > command. > > > > It seems to be happening once system has accumulated some uptime. If > > rebooted, it keeps running for a week or two with no issues, but then > > timeouts start to happen more or less reliably every single 24 hours. > > Does it correlate with high disk activity, i.e. with periodic(8)? > > On my machine, I have a feeling that timeouts occur more often > at that point, than normally... and that they also occur when multiple > processes access the disk simultaneously. I have seen a panic once last week under 9 stable. I had multiple virtual boxes running different FreeBSD versions. Each virtual host was building kernels with -j4. The host became very slow and the FreeBSD 9 virtual host paniced. I have not been able to to duplicate the panic. Larry -- ------------------------------------------------------------------------ Larry Baird | http://www.gta.com Global Technology Associates, Inc. | Orlando, FL Email: lab@gta.com | TEL 407-380-0220, FAX 407-380-6080