From owner-freebsd-stable@FreeBSD.ORG Wed Oct 4 19:53:57 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 D145216A40F for ; Wed, 4 Oct 2006 19:53:57 +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 3480243D67 for ; Wed, 4 Oct 2006 19:53:55 +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 230D4B816 for ; Wed, 4 Oct 2006 15:53:55 -0400 (EDT) Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: <20061004194148.GA37672@xor.obsecurity.org> 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> <20061004140808.GD89654@deviant.kiev.zoral.com.ua> <20061004163944.GA35412@xor.obsecurity.org> <20061004194148.GA37672@xor.obsecurity.org> X-Gpgmail-State: !signed Content-Type: multipart/signed; micalg=sha1; boundary=Apple-Mail-16--851675655; protocol="application/pkcs7-signature" Message-Id: <488B45BD-BBAA-4E5F-B94E-9DF27BFA1F3A@khera.org> From: Vivek Khera Date: Wed, 4 Oct 2006 15:53:54 -0400 To: stable@freebsd.org X-Mailer: Apple Mail (2.752.2) X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: 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 19:53:57 -0000 --Apple-Mail-16--851675655 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed On Oct 4, 2006, at 3:41 PM, Kris Kennaway wrote: >> from what i read in the output from kgdb, it seems that something >> locked the kernel and we broke to debugger from the watchdog timeout >> (I enable software watchdog). > > Hmm, be careful with that - if you set the timeout too low (and note > that for some workloads O(minutes) may even be too low) then you'll > get a lot of false positives. hmmm... the man page for watchdogd doesn't specify what the default timeout is, but that's what we've got running. [tappity-tapptity- tap...] source seems to indicate 16seconds timeout. interesting. so we could be getting hit with a bge interrupt storm and timing out. i'll turn off fido and see what happens. at this point, though, i think i have two separate issues. one with bge and watchdog timeout, and one with locking of the filesystem with mksnap_ffs, as the symptoms are different. --Apple-Mail-16--851675655--