From owner-freebsd-fs@FreeBSD.ORG Mon Jun 2 15:49:09 2014 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 98542F79 for ; Mon, 2 Jun 2014 15:49:09 +0000 (UTC) Received: from mx.got.net (mx3.mx3.got.net [207.111.237.42]) by mx1.freebsd.org (Postfix) with ESMTP id 7998B248B for ; Mon, 2 Jun 2014 15:49:08 +0000 (UTC) Received: from [192.168.251.238] (unknown [207.111.246.196]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mx.got.net (mx2.mx3.got.net) with ESMTP id EC62823BC13; Mon, 2 Jun 2014 08:49:07 -0700 (PDT) Message-ID: <538C9CF3.6070208@bayphoto.com> Date: Mon, 02 Jun 2014 08:49:07 -0700 From: Mike Carlson Reply-To: mike@bayphoto.com User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Steven Hartland , freebsd-fs@freebsd.org Subject: Re: ZFS Kernel Panic on 10.0-RELEASE References: <5388D64D.4030400@bayphoto.com> <5388E5B4.3030002@bayphoto.com> <538BBEB7.4070008@bayphoto.com> <782C34792E95484DBA631A96FE3BEF20@multiplay.co.uk> In-Reply-To: <782C34792E95484DBA631A96FE3BEF20@multiplay.co.uk> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms020608040302080809050203" X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 Jun 2014 15:49:09 -0000 This is a cryptographically signed message in MIME format. --------------ms020608040302080809050203 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable On 6/2/2014 2:12 AM, Steven Hartland wrote: > ----- Original Message ----- From: "Mike Carlson" > >> On 5/30/2014 1:10 PM, Mike Carlson wrote: >> > On 5/30/2014 12:48 PM, Jordan Hubbard wrote: >> >> On May 30, 2014, at 12:04 PM, Mike Carlson wrot= e: >> >> >> >>> Over the weekend, we had upgraded one of our servers from=20 >> 9.1-RELEASE to 10.0-RELEASE, and then the zpool was upgraded (from=20 >> >>> 28 to 5000) >> >>> >> >>> Tuesday afternoon, the server suddenly rebooted (kernel panic),=20 >> and as soon as it tried to remount all of its ZFS volumes, >>> it=20 >> panic'd again. >> >> What=92s the panic text? That=92s pretty crucial in figuring out=20 >> whether this is recoverable (e.g. if it=92s spacemap corruption >>=20 >> related, probably not). >> >> >> >> - Jordan >> >> >> >> >> >> >> > I had linked the pictures I took of the console, but here is my=20 >> manual reproduction: >> > >> > Fatal trap 12: page fault while in kernel mode >> > cpuid =3D 7; apic id =3D 07 >> > fault virtual address =3D 0x4a0 >> > fault code =3D supervisor read data, page not prese= nt >> > instruction pointer =3D 0x20:0xffffffff81a7f39f >> > stack pointer =3D 0x28:0xfffffe1834789570 >> > frame pointer =3D 0x28:0xfffffe18347895b0 >> > code segment =3D base 0x0, limit 0xfffff, type 0x1b >> > =3D DPL 0, pres 1, long 1, def32 0, gra= n 1 >> > processor eflags =3D interrupt enabled, resume, IOPL =3D = 0 >> > current process =3D 1849 (txg_thread_enter) >> > trap number =3D 12 >> > panic: page fault >> > cpuid =3D 7 >> > KDB: stack backtrace: >> > #0 0xffffffff808e7dd0 at kdb_backtrace+0x60 >> > #1 0xffffffff808af8b5 at panic+0x155 >> > #2 0xffffffff80c8e629 at trap_fatal+0x3a2 >> > #3 0xffffffff80c8e969 at trap_pfault+0x2c9 >> > #4 0xffffffff80c8e0f6 at trap+0x5e6 >> > #5 0xffffffff80c75392 at calltrap+0x8 >> > #6 0xffffffff81a53b5a at dsl_dataset_block_kill+0x3a >> > #7 0xffffffff81a50967 at dnode_sync+0x237 >> > #8 0xffffffff81a48fcb at dmu_objset_sync_dnodes+0x2b >> > #9 0xffffffff81a48e4d at dmo_objset_sync+0x1ed >> > #10 0xffffffff81a5d29a at dsl_pool_sync+0xca >> > #11 0xffffffff81a78a4e at spa_sync+0x52e >> > #12 0xffffffff81a81925 at txg_sync_thread+0x375 >> > #13 0xffffffff8088198a at fork_exit+0x9a >> > #14 0xffffffff80c758ce at fork_trampoline+0xe >> > uptime: 46s >> > Automatic reboot in 15 seconds - press a key on the console to=20 >> abort >> > >> This just happened again to another server. We upgraded two servers=20 >> on the same morning, and now both of them exhibit this corrupted zfs=20 >> volume and panic behavior. >> >> Out of all the volumes, one of them is causing the panic, and the=20 >> panic message is nearly identical. >> >> I have 4 snapshots over the last 24 hours, so hopefully a snapshot=20 >> from noon today can be sent to a new volume ( zfs send | zfs recv ) >> >> I guess I can now rule out it being a hardware issue, this is clearly = >> problem related to the upgrade (freebsd-update was used). I first=20 >> thought the first system had a bad upgrade, perhaps a mix and match=20 >> of 9.2 binaries running on a 10 kernel, but I used the=20 >> 'freebsd-update IDS' command to verify the integrity of the install,=20 >> and it looked good, the only differences were config files in /etc/=20 >> that we manage. >> > > Do you have a kernel crash dump from this? > > Also can you confirm if your amd64 or just i386? > > Regards > Steve > > I dont have a crash dump, and this is on amd64 I might be able to get a crash dump on one of them, the other is back up = and running. It is a little challenging because the system I can do this = on has zfs on root, but I have a spare drive I can use as the swap volume= =2E Mike C --------------ms020608040302080809050203 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIITIjCC BhwwggQEoAMCAQICCGWP9DPVdj3ZMA0GCSqGSIb3DQEBCwUAMEsxDzANBgNVBAMMBlJvb3RD QTEWMBQGA1UECgwNQmF5IFBob3RvIExhYjETMBEGA1UECAwKQ2FsaWZvcm5pYTELMAkGA1UE BhMCVVMwHhcNMTIxMDIzMTczMjE4WhcNMjcxMDIzMTczMjE4WjBYMRwwGgYDVQQDDBNCYXkg UGhvdG8gUGVvcGxlIENBMRYwFAYDVQQKDA1CYXkgUGhvdG8gTGFiMRMwEQYDVQQIDApDYWxp Zm9ybmlhMQswCQYDVQQGEwJVUzCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBALuW vZE7FFSO77jEhdT/dZzu0XnPS35aepuvMvCNTagnNMbaf+AKrLZFaVRqBt4f6yl5TDXNEAMI +CJrg7T9dsoGN1Vygm4bIFzOIRtTZ1A7seemeonyqMto8gYMPhEFicuKavEAFcCFprVcVu5v 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