[Ocfs2-users] Node panic

[Jim Erb]

Can anyone tell me what might be happening here.  I have a 3 node
cluster running under RH AS 4 (2.6.9-22.0.1.ELsmp) with ocfs2 v.
1.2.0-1.  I've recently implemented elevator=deadline in grub.conf to
fix some previous panics, but now it seems this box goes down every few
days with this panic:

May 10 13:46:10 linux97 kernel: (29579,0):ocfs2_extend_file:784 ERROR:
bug expression: i_size_read(inode) != (le64_to_cpu(fe->i_size) -
*bytes_extended)
May 10 13:46:10 linux97 kernel: (29579,0):ocfs2_extend_file:784 ERROR:
Inode 3891726 i_size = 77801, dinode i_size = 79865, bytes_extended = 0,
new_i_size = 77874
May 10 13:46:10 linux97 kernel: ------------[ cut here ]------------
May 10 13:46:10 linux97 kernel: kernel BUG
at /rpmbuild/jlbec/BUILD/ocfs2-1.2.0/fs/ocfs2/file.c:784!
May 10 13:46:10 linux97 kernel: invalid operand: 0000 [#1]
May 10 13:46:10 linux97 kernel: SMP
May 10 13:46:10 linux97 kernel: Modules linked in: nfs lockd
hangcheck_timer md5 ipv6 parport_pc lp parport autofs4 i2c_dev i2c_core
ocfs2(U) debugfs(U)
ocfs2_dlmfs(U) ocfs2_dlm(U) ocfs2_nodemanager(U) configfs(U) sunrpc
dm_mirror dm_mod emcphr(U) emcpmpap(U) emcpmpaa(U) emcpmpc(U) emcpmp(U)
emcp(U) emcplib(U) button battery ac uhci_hcd ehci_hcd hw_random shpchp
e1000 bonding(U) floppy sg ext3 jbd lpfc(U) scsi_transport_fc
megaraid_mbox megaraid_mm sd_mod scsi_mod
May 10 13:46:10 linux97 kernel: CPU:    0
May 10 13:46:10 linux97 kernel: EIP:    0060:[<f8f8c635>]    Tainted: P
VLI
May 10 13:46:10 linux97 kernel: EFLAGS: 00210292   (2.6.9-22.0.1.ELsmp)
May 10 13:46:10 linux97 kernel: EIP is at ocfs2_extend_file+0x380/0xf25
[ocfs2]
May 10 13:46:10 linux97 kernel: eax: 00000086   ebx: 00000000   ecx:
ea42fe6c   edx: f8fb52b5
May 10 13:46:10 linux97 kernel: esi: f4144e24   edi: ea42ff18   ebp:
cc540000   esp: ea42fea4
May 10 13:46:10 linux97 kernel: ds: 007b   es: 007b   ss: 0068
May 10 13:46:10 linux97 kernel: Process oracle (pid: 29579,
threadinfo=ea42f000 task=e8bd11b0)
May 10 13:46:10 linux97 kernel: Stack: f70d0380 00000000 00000000
00000000 f4144e24 f6ef4f00 ea42ff58 00000000
May 10 13:46:10 linux97 kernel:        00000000 e53ff48c f7fbc200
ea42ff68 00000000 ea42ff68 00000000 ea42ff68
May 10 13:46:10 linux97 kernel:        00000000 f4144e24 f8f9a4ee
00013032 00000000 ea42ff18 00012fe9 00000000
May 10 13:46:10 linux97 kernel: Call Trace:
May 10 13:46:10 linux97 kernel:  [<f8f9a4ee>]
ocfs2_write_lock_maybe_extend+0x731/0xad5 [ocfs2]
May 10 13:46:10 linux97 kernel:  [<f8f8a684>] ocfs2_file_write
+0x11f/0x254 [ocfs2]
May 10 13:46:10 linux97 kernel:  [<c0159d24>] vfs_write+0xb6/0xe2
May 10 13:46:10 linux97 kernel:  [<c0159dee>] sys_write+0x3c/0x62
May 10 13:46:10 linux97 kernel:  [<c02d0fb7>] syscall_call+0x7/0xb
May 10 13:46:10 linux97 kernel: Code: b1 e0 fd ff ff ff b1 dc fd ff ff
68 10 03 00 00 68 01 fb fa f8 ff 70 10 ff b2 94 00 00 00 68 b5 52 fb f8
e8 f8 5b 19 c7 83 c4 3c <0f> 0b 10 03 1c 50 fb f8 8b 5c 24 10 8b 83 54
01 00 00 0f ae e8
May 10 13:46:10 linux97 kernel:  <0>Fatal exception: panic in 5 seconds