From owner-freebsd-fs@FreeBSD.ORG Thu Jul 30 14:39:52 2009 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2F5A9106566B; Thu, 30 Jul 2009 14:39:52 +0000 (UTC) (envelope-from serenity@exscape.org) Received: from ch-smtp01.sth.basefarm.net (ch-smtp01.sth.basefarm.net [80.76.149.212]) by mx1.freebsd.org (Postfix) with ESMTP id A4AB48FC16; Thu, 30 Jul 2009 14:39:51 +0000 (UTC) (envelope-from serenity@exscape.org) Received: from c83-253-252-234.bredband.comhem.se ([83.253.252.234]:38977 helo=mx.exscape.org) by ch-smtp01.sth.basefarm.net with esmtp (Exim 4.68) (envelope-from ) id 1MWWnB-0003BT-54; Thu, 30 Jul 2009 16:39:39 +0200 Received: from [192.168.1.5] (macbookpro [192.168.1.5]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by mx.exscape.org (Postfix) with ESMTPSA id CAD001734E5; Thu, 30 Jul 2009 16:39:38 +0200 (CEST) Message-Id: <7544AED1-1216-4A24-B287-F54117641F76@exscape.org> From: Thomas Backman To: Andriy Gapon In-Reply-To: <4A71AD29.10705@freebsd.org> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v935.3) Date: Thu, 30 Jul 2009 16:39:36 +0200 References: <20090727072503.GA52309@jpru.ffm.jpru.de> <4A6E06E6.9030300@mail.zedat.fu-berlin.de> <4A6EC9E2.5070200@icyb.net.ua> <20090729084723.GD1586@garage.freebsd.pl> <4A7030B6.8010205@icyb.net.ua> <97D5950F-4E4D-4446-AC22-92679135868D@exscape.org> <4A7048A9.4020507@icyb.net.ua> <52AA86CB-6C06-4370-BA73-CE19175467D0@exscape.org> <4A705299.8060504@icyb.net.ua> <4A7054E1.5060402@icyb.net.ua> <5918824D-A67C-43E6-8685-7B72A52B9CAE@exscape.org> <4A705E50.8070307@icyb.net.ua> <4A70728C.7020004@freebsd.org> <6D47A34B-0753-4CED-BF3D-C505B37748FC@exscape.org> <4A708455.5070304@freebsd.org> <86983A55-E5C4-4C04-A4C7-0AE9A9EE37A3@exscape.org> <4A718E03.6030909@freebsd.org> <71A038EC-02B1-4606-96C2-5E84BE80F005@exscape.org> <4A719CA4.4060400@freebsd.org> <19347561-3CE6-40B3-930A-EB9925D3AFD1@exscape.org> <4A71AD29.10705@freebsd.org> X-Mailer: Apple Mail (2.935.3) X-Originating-IP: 83.253.252.234 X-Scan-Result: No virus found in message 1MWWnB-0003BT-54. X-Scan-Signature: ch-smtp01.sth.basefarm.net 1MWWnB-0003BT-54 4ab95fe6bf6bdad971b99696663e497c Cc: freebsd-fs@freebsd.org, FreeBSD current , Pawel Jakub Dawidek Subject: Re: zfs: Fatal trap 12: page fault while in kernel mode X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Jul 2009 14:39:52 -0000 On Jul 30, 2009, at 16:24, Andriy Gapon wrote: > > Could you please add DEBUG_VFS_LOCKS to kernel config and check that > we haven't > broke VFS locking with the patch? > Thank you again! > > -- > Andriy Gapon Hey, thank *you* :) Currently recompiling the kernel, I'll have a look later. What do I do, though? Just keep an eye on the console, or something more involved? (Or, since the handbook mentions lockedvnods in ddb: when should I check lockedvnods?) BTW: Could you (or anyone else with knowledge in these areas) have a look at the libzfs_sendrecv patch? Final piece of the puzzle as far as all the panics (well, core dump in this case) I've ran in to is concerned. http://lists.freebsd.org/pipermail/freebsd-current/2009-May/006814.html Or, in patch form (I think the intendation screws the patch up as linked there): http://exscape.org/temp/libzfs_sendrecv.patch Appears to be a pretty simple patch. I've tried writing a test case, but it's a bit of work to make it create separate pools, etc, so I'd rather skip that if possible. Without the patch, I can't get send -R - I (recursive + auto-incremental, i.e. you can do -I snap1 tank@snap4 instead of -i snap1 -i snap2 ...) to work without core dumping on the recv (sending to a file works just fine, but when receiving from the file, it core dumps; of course, the same is true for a pipe). Regards, Thomas