Date: Sun, 01 Jun 2014 17:00:55 -0700 From: Mike Carlson <mike@bayphoto.com> To: freebsd-fs@freebsd.org Subject: Re: ZFS Kernel Panic on 10.0-RELEASE Message-ID: <538BBEB7.4070008@bayphoto.com> In-Reply-To: <5388E5B4.3030002@bayphoto.com> References: <5388D64D.4030400@bayphoto.com> <EC2EA442-56FC-46B4-A1E2-97523029B7B3@mail.turbofuzz.com> <5388E5B4.3030002@bayphoto.com>
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This is a cryptographically signed message in MIME format. --------------ms060901060501040609070000 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable 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 <mike@bayphoto.com> wrote: >> >>> 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), and=20 >>> as soon as it tried to remount all of its ZFS volumes, it panic'd=20 >>> again. >> What=92s the panic text? That=92s pretty crucial in figuring out whet= her=20 >> this is recoverable (e.g. if it=92s spacemap corruption related,=20 >> probably not). >> >> - Jordan >> >> >> > I had linked the pictures I took of the console, but here is my 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 present > 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, gran 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 abort= > This just happened again to another server. We upgraded two servers on=20 the same morning, and now both of them exhibit this corrupted zfs volume = and panic behavior. Out of all the volumes, one of them is causing the panic, and the panic=20 message is nearly identical. I have 4 snapshots over the last 24 hours, so hopefully a snapshot from=20 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=20 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 of=20 9.2 binaries running on a 10 kernel, but I used the 'freebsd-update IDS' = command to verify the integrity of the install, and it looked good, the=20 only differences were config files in /etc/ that we manage. --------------ms060901060501040609070000 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 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