From owner-freebsd-fs@FreeBSD.ORG Sat Apr 13 21:23:41 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 27EE4D8 for ; Sat, 13 Apr 2013 21:23:41 +0000 (UTC) (envelope-from quartz@sneakertech.com) Received: from relay02.pair.com (relay02.pair.com [209.68.5.16]) by mx1.freebsd.org (Postfix) with SMTP id BDEF514BA for ; Sat, 13 Apr 2013 21:23:40 +0000 (UTC) Received: (qmail 91609 invoked by uid 0); 13 Apr 2013 21:23:39 -0000 Received: from 173.48.104.62 (HELO ?10.2.2.1?) (173.48.104.62) by relay02.pair.com with SMTP; 13 Apr 2013 21:23:39 -0000 X-pair-Authenticated: 173.48.104.62 Message-ID: <5169CCDA.2020901@sneakertech.com> Date: Sat, 13 Apr 2013 17:23:38 -0400 From: Quartz User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:10.0.2) Gecko/20120216 Thunderbird/10.0.2 MIME-Version: 1.0 To: Jeremy Chadwick Subject: Re: A failed drive causes system to hang References: <51672164.1090908@o2.pl> <20130411212408.GA60159@icarus.home.lan> <5168821F.5020502@o2.pl> <20130412220350.GA82467@icarus.home.lan> <516917CA.5040607@sneakertech.com> <20130413154130.GA877@icarus.home.lan> <5169C747.8030806@sneakertech.com> In-Reply-To: <5169C747.8030806@sneakertech.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 13 Apr 2013 21:23:41 -0000 >> Your issue: "on my raidz2 pool, when I lose more than 2 disks, I/O to >> the pool stalls indefinitely, > > Close, but not quite- Yes, io to the pool stalls, but io in general also > stalls. It appears the problem possibly doesn't start until there's io > traffic to the pool though. > > >> but I can still use the system barring >> ZFS-related things; > > No. I've responded to this misconception on your part more than once- I > *CANNOT* use the system in any reliable way, random commands fail. I've > had it hang trying cd from one dir on the boot volume to another dir on > the boot volume. The only thing I can *reliably* do is log in. Past that > point all bets are off. So, in looking over my thread again from the start, I realize there's been an evolution of diagnosis that may not have been immediately obvious. When I wrote up the description in my initial email, *at that time* I thought that io confined to the boot drive was in the clear. However, shortly afterwards after doing more tests over the course of the thread, I discovered that this was NOT the case. ______________________________________ it has a certain smooth-brained appeal