[Linux-cluster] Kernel Oops gfs:gfs_glock_dq

Thu Aug 23 06:56:27 UTC 2007

Hi Mehmet,

how do you explain the kernel dump with the number of gfs_glockd ? By default 
there is one per gfs mount. 
Is there a bugzilla that adresses this problem ?

In my opinion it looks like the panic occurs during a flock release. 

Mark

On Wednesday 22 August 2007 15:56:29 mehmet celik wrote:
> hi,
>
> did you look to manpages of gfs_tool ? I guess, you should change number of
> the glockd process. right now, it's not enough for your system.
>
> . . .
> . . .
> # gfs_tool margs "oopses_ok,num_glockd=X"
> # mount
> . . .
>
> the X must be a integer value (1...32).
>
> Mehmet CELIK
> Istanbul/TURKEY
>
> >From: Reiner Rottmann <rottmann at atix.de>
> >Reply-To: linux clustering <linux-cluster at redhat.com>
> >To: linux-cluster at redhat.com
> >Subject: [Linux-cluster] Kernel Oops gfs:gfs_glock_dq
> >Date: Wed, 22 Aug 2007 11:57:01 +0200
> >
> >Hi,
> >
> >we experienced a kernel oops in gfs:gfs_glock_dq for the first time and we
> >would like to know if there are others who are affected by this issue.
> >
> >Although the node was successfully fenced by the cluster and could rejoin
> >without any troubles we are curious about what happened. There are no
> >suspicious log entries preceding the oops messages.
> >
> >Is this perhaps a known bug and maybe already solved?
> >
> >
> ># cat /var/log/messages
> >...
> >Aug 17 17:45:00 node01.mgmt  Unable to handle kernel NULL pointer
> >dereference
> >at 0000000000000000 RIP:
> >Aug 17 17:45:00 node01.mgmt  <ffffffffa0179aef>{:gfs:gfs_glock_dq+191}
> >Aug 17 17:45:00 node01.mgmt  PML4 9363d067 PGD d5119067 PMD 0
> >Aug 17 17:45:00 node01.mgmt  Oops: 0000 [1] SMP
> >Aug 17 17:45:00 node01.mgmt  CPU 3
> >Aug 17 17:45:00 node01.mgmt  Modules linked in: parport_pc lp parport
> >netconsole netdump autofs4 i2c_dev i2c_core sunrpc ds yenta_socket
> >pcmcia_core ext3 j
> >bd button battery ac ohci_hcd hw_random scsi_transport_fc md5 ipv6
> >lock_dlm(U)
> >dlm(U) gfs(U) lock_harness(U) cman(U) 8021q bonding(U) qla2300(U)
> >qla2xxx_co
> >nf(U) qla2xxx(U) sd_mod scsi_mod dm_snapshot dm_mirror dm_mod tg3
> >Aug 17 17:45:00 node01.mgmt  Pid: 13218, comm: site_search_dev Not tainted
> >2.6.9-42.0.3.ELsmp
> >Aug 17 17:45:00 node01.mgmt  RIP: 0010:[<ffffffffa0179aef>]
> ><ffffffffa0179aef>{:gfs:gfs_glock_dq+191}
> >Aug 17 17:45:00 node01.mgmt  RSP: 0018:0000010042b33ce8  EFLAGS: 00010203
> >Aug 17 17:45:00 node01.mgmt  RAX: 000001009cc5c368 RBX: 0000000000000000
> >RCX:
> >00000100af058d50
> >Aug 17 17:45:00 node01.mgmt  RDX: 0000000000000000 RSI: 0000000000000000
> >RDI:
> >000001009cc5c35c
> >Aug 17 17:45:00 node01.mgmt  RBP: 000001009cc5c330 R08: 0000000000000000
> >R09:
> >0000000000000000
> >Aug 17 17:45:00 node01.mgmt  R10: 0000000000000000 R11: 00000100af058ce0
> >R12:
> >000001009cc5c35c
> >Aug 17 17:45:01 node01.mgmt  R13: 0000010008fcc5e8 R14: ffffff00005a3000
> >R15:
> >00000100234079a8
> >Aug 17 17:45:01 node01.mgmt  FS:  0000002a95561a20(0000)
> >GS:ffffffff804e5300
> >(0000) knlGS:0000000000000000
> >Aug 17 17:45:01 node01.mgmt  CS:  0010 DS: 0000 ES: 0000 CR0:
> >000000008005003b
> >Aug 17 17:45:01 node01.mgmt  CR2: 0000000000000000 CR3: 0000000001050000
> >CR4:
> >00000000000006e0
> >Aug 17 17:45:01 node01.mgmt  Process site_search_dev (pid: 13218,
> >threadinfo
> >0000010042b32000, task 000001004886d7f0)
> >Aug 17 17:45:01 node01.mgmt  Stack: 0000010042b33cf8 00012c5400000000
> >ffffffffa01b99c0 0000010008fcc5e8
> >Aug 17 17:45:01 node01.mgmt         0000010008fcc5c0 0000010008fcc5e8
> >00000100dd2625e8 0000000000000000
> >Aug 17 17:45:01 node01.mgmt         0000000000000000 ffffffffa0179c08
> >Aug 17 17:45:01 node01.mgmt  Call
> >Trace:<ffffffffa0179c08>{:gfs:gfs_glock_dq_uninit+9}
> ><ffffffffa018ef63>{:gfs:gfs_flock+222}
> >Aug 17 17:45:01 node01.mgmt
> ><ffffffffa01e1781>{:lock_dlm:get_resource+84}
> ><ffffffffa01e23d7>{:lock_dlm:lm_dlm_punlock+642}
> >Aug 17 17:45:01 node01.mgmt
> ><ffffffff8018e5e4>{locks_remove_flock+97}
> ><ffffffff8017a21d>{__fput+73}
> >Aug 17 17:45:01 node01.mgmt         <ffffffff80178e48>{filp_close+103}
> ><ffffffff80178ed1>{sys_close+130}
> >Aug 17 17:45:01 node01.mgmt         <ffffffff8011026a>{system_call+126}
> >Aug 17 17:45:01 node01.mgmt
> >Aug 17 17:45:01 node01.mgmt  Code: 48 8b 02 0f 18 08 48 8d 45 38 48 39 c2
> >74
> >0c ff 44 24 0c 49
> >Aug 17 17:45:01 node01.mgmt  RIP <ffffffffa0179aef>{:gfs:gfs_glock_dq+191}
> >RSP
> ><0000010042b33ce8>
> >Aug 17 17:45:01 node01.mgmt  CR2: 0000000000000000
> >...
> >
> >$ uname -a
> >Linux node01 2.6.9-42.0.3.ELsmp #1 SMP Fri Oct 6 06:28:26 CDT 2006 x86_64
> >x86_64 x86_64 GNU/Linux
> >
> >$ rpm -qa
> >...
> >hp_qla2x00src-8.01.06-7
> >kernel-smp-2.6.9-42.0.3.EL
> >kernel-smp-devel-2.6.9-42.0.3.EL
> >ccs-1.0.7-0
> >cman-1.0.11-0
> >cman-kernel-smp-2.6.9-45.8
> >dlm-1.0.1-1
> >dlm-kernel-smp-2.6.9-44.3
> >GFS-6.1.6-1
> >GFS-kernel-smp-2.6.9-60.3
> >magma-1.0.6-0
> >magma-plugins-1.0.9-0
> >...
> >
> >
> >--
> >Gruss / Regards,
> >
> >Dipl.-Ing. (FH) Reiner Rottmann
> >
> >Phone: +49-89 452 3538-12
> >
> >http://www.atix.de/
> >http://open-sharedroot.org/
> >
> >PGP Key ID: 0xCA67C5A6
> >PGP Key Fingerprint = BF59FF006360B6E8D48F26B10D9F5A84CA67C5A6
> >
> >**
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> >
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> >
> ><< attach4 >>
> >
> >
> >
> >
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Gruss / Regards,

Dipl.-Ing. Mark Hlawatschek
Phone: +49-89 452 3538-15
http://www.atix.de/
http://www.open-sharedroot.org/

**
ATIX Informationstechnologie und Consulting AG
Einsteinstr. 10 
85716 Unterschleissheim
Deutschland/Germany

Phone: +49-89 452 3538-0
Fax:   +49-89 990 1766-0

Registergericht: Amtsgericht Muenchen
Registernummer: HRB 168930
USt.-Id.: DE209485962

Vorstand: 
Marc Grimme, Mark Hlawatschek, Thomas Merz (Vors.)

Vorsitzender des Aufsichtsrats:
Dr. Martin Buss