From owner-freebsd-fs@FreeBSD.ORG Sun Aug 2 09:27:17 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 BAA6A106566B; Sun, 2 Aug 2009 09:27:17 +0000 (UTC) (envelope-from lists@jpru.de) Received: from jpru.ffm.jpru.de (jpru.ffm.jpru.de [195.49.136.33]) by mx1.freebsd.org (Postfix) with ESMTP id E3EBF8FC0C; Sun, 2 Aug 2009 09:27:16 +0000 (UTC) (envelope-from lists@jpru.de) Received: from jpru.ffm.jpru.de (jpru.ffm.jpru.de [195.49.136.33]) by jpru.ffm.jpru.de (8.13.8/8.13.8) with ESMTP id n729RF5k085356; Sun, 2 Aug 2009 11:27:15 +0200 (CEST) (envelope-from lists@jpru.de) Received: (from unger@localhost) by jpru.ffm.jpru.de (8.13.8/8.13.8/Submit) id n729REd7085355; Sun, 2 Aug 2009 11:27:14 +0200 (CEST) (envelope-from lists@jpru.de) X-Authentication-Warning: jpru.ffm.jpru.de: unger set sender to lists@jpru.de using -f Date: Sun, 2 Aug 2009 11:27:14 +0200 From: Juergen Unger To: Pawel Jakub Dawidek Message-ID: <20090802092714.GA5813@jpru.ffm.jpru.de> References: <20090727072503.GA52309@jpru.ffm.jpru.de> <4A6E06E6.9030300@mail.zedat.fu-berlin.de> <4A6EC9E2.5070200@icyb.net.ua> <20090729084723.GD1586@garage.freebsd.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090729084723.GD1586@garage.freebsd.pl> User-Agent: Mutt/1.4.2.3i Cc: freebsd-fs@FreeBSD.org, "O. Hartmann" , freebsd-current@FreeBSD.org, spambox@haruhiism.net, Andriy Gapon 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: Sun, 02 Aug 2009 09:27:18 -0000 Hi Pawel, On Wed, Jul 29, 2009 at 10:47:23AM +0200, Pawel Jakub Dawidek wrote: > On Tue, Jul 28, 2009 at 12:50:26PM +0300, Andriy Gapon wrote: > > on 27/07/2009 22:58 O. Hartmann said the following: > > > Juergen Unger wrote: > > [snip] > > >>> _sx_xlock(3c,0,874aa28d,70f,8ae9a9f8,...) at _sx_xlock+0x43 > > >>> dmu_buf_update_user(0,8ae9a9f8,0,0,0,...) at dmu_buf_update_user+0x35 > > >>> zfs_znode_dmu_fini(8ae9a9f8,874b312d,1114,110b,879ab000,...) at zfs_znode_dmu_f3 > > >>> zfs_freebsd_reclaim(fcd29c3c,1,0,8ec63754,fcd29c60,...) at zfs_freebsd_reclaim+0 > > >>> VOP_RECLAIM_APV(874b65a0,fcd29c3c,0,0,8ec637c8,...) at VOP_RECLAIM_APV+0xa5 > > >>> vgonel(8ec637c8,0,80c77037,386,0,...) at vgonel+0x1a4 > > >>> vnlru_free(80f2a0f0,0,80c77037,300,3e8,...) at vnlru_free+0x2d5 > > >>> vnlru_proc(0,fcd29d38,80c652bc,33e,871932a8,...) at vnlru_proc+0x80 > > >>> fork_exit(8090d960,0,fcd29d38) at fork_exit+0xb8 > > >>> fork_trampoline() at fork_trampoline+0x8 >[snip] > > P.S. I see that zfs_inactive checks for z_dbuf being NULL and there is the > > following comment: > > /* > > * The fs has been unmounted, or we did a > > * suspend/resume and this file no longer exists. > > */ > > Maybe zfs_freebsd_reclaim should do the same? > > Yes, you might be right. > > Could you guys, who can reproduce it, try this patch: > > http://people.freebsd.org/~pjd/patches/zfs_vnops.c.2.patch I tried the patch, restarted the whole thing yesterday morning and after less then 24 hours and approximately 3215 zfs-receive jobs it do not crashes anymore, but the last started zfs-receive jobs is hanging, cannot be killed, even not with -9. Even other zfs commands are hanging and cannot be killed, while zpool commands seems to be not affected. root 86397 0.0 0.0 3920 1308 ?? D 3:18AM 0:00.29 zfs receive -Fv zzzz/203 root 5001 0.0 0.0 3920 1208 0 D+ 10:45AM 0:00.00 zfs list -t snapshot root 5477 0.0 0.0 3920 1240 3 D+ 11:08AM 0:00.00 zfs list also the sync command I tried to execute hangs forever: root 5457 0.0 0.0 1528 492 2- D+ 11:05AM 0:00.04 sync Other parts of the system which do not have something todo with zfs are still working well. I will leave the machine running in this state, is there something I can do to retrieve other usefull information for you? thnx in advance, Juergen -- ENOSIG