From owner-freebsd-stable@FreeBSD.ORG Wed Oct 4 21:16:58 2006 Return-Path: X-Original-To: stable@freebsd.org Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B7D5016A417 for ; Wed, 4 Oct 2006 21:16:58 +0000 (UTC) (envelope-from vivek@khera.org) Received: from yertle.kcilink.com (yertle.kcilink.com [65.205.34.180]) by mx1.FreeBSD.org (Postfix) with ESMTP id 28FE943D68 for ; Wed, 4 Oct 2006 21:16:54 +0000 (GMT) (envelope-from vivek@khera.org) Received: from [192.168.7.103] (host-103.int.kcilink.com [192.168.7.103]) by yertle.kcilink.com (Postfix) with ESMTP id 435E2B80F; Wed, 4 Oct 2006 17:16:54 -0400 (EDT) In-Reply-To: <20061003084315.GA89654@deviant.kiev.zoral.com.ua> References: <917B087C-5E13-4D7F-94FA-95CB0E5C1884@khera.org> <20060922190328.GA64849@xor.obsecurity.org> <555B84D2-520F-44D6-84D6-CF9CE7EE47C7@khera.org> <20060922203654.GA65693@xor.obsecurity.org> <847DD3A5-D5DD-4D3E-B755-64B13D1DA506@khera.org> <20061003084315.GA89654@deviant.kiev.zoral.com.ua> Mime-Version: 1.0 (Apple Message framework v752.2) X-Gpgmail-State: !signed Content-Type: multipart/signed; micalg=sha1; boundary=Apple-Mail-19--846696678; protocol="application/pkcs7-signature" Message-Id: <40CE3CF0-49D2-4335-A0B8-34B5251E9E19@khera.org> From: Vivek Khera Date: Wed, 4 Oct 2006 17:16:53 -0400 To: Kostik Belousov X-Mailer: Apple Mail (2.752.2) X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: stable@freebsd.org Subject: Re: ffs snapshot lockup X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 04 Oct 2006 21:16:58 -0000 --Apple-Mail-19--846696678 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed On Oct 3, 2006, at 4:43 AM, Kostik Belousov wrote: >> Details are posted at http://vivek.khera.org/scratch/crashlogs/ >> >> I have the crashdumps available to a kernel hacker upon request (i'd >> rather not make them generally available to the public...) >> > It seems that you have snapshotted fs exported by nfsd ? At least, > 18a is > definitely the case. I have the patch (for current) that shall fix > the issue. > In fact, you need two patches: As per advice of Kris Kenneway, I turned off the software watchdog to rule out that as my problem. Then I ran a level 3 dump. Dump of root fs went fine, then it proceeded to do /usr. After a few minutes it locked up. Typescript 20 at the above URL shows the debugging info from the break into debugger of the locked up system. Since /usr was locked, nobody could log in at all. The network load was minimal at the time. I had everyone log out and close mail etc. --Apple-Mail-19--846696678--