Followup to my previous message. Version 1.2.3 has the same problem, so maybe this is related to something different? I have the same problem on both nodes on the cluster. From dmesg, this may be easier to process for those in the known .... [17179712.548000] ------------[ cut here ]------------ [17179712.548000] kernel BUG at fs/inode.c:253! [17179712.548000] invalid opcode: 0000 [#1] [17179712.548000] Modules linked in: i915 hangcheck_timer nfsd exportfs lockd nfs_acl parport_pc lp parport oracleasm autofs4 ocfs2 ocfs2_dlmfs ocfs2_dlm ocfs2_nodemanager configfs sunrpc ipv6 button battery ac uhci_hcd ehci_hcd intelfb shpchp i2c_i801 i2c_core snd_hda_intel snd_hda_codec snd_pcm_os s snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc 8139cp e100 8139too mii floppy sg dm_ snapshot dm_zero dm_mirror ext3 jbd dm_mod sbp2 ohci1394 ieee1394 ata_piix libata sd_mod scsi_mod [17179712.548000] CPU: 0 [17179712.548000] EIP: 0060:[<c016dcc7>] Not tainted VLI [17179712.548000] EFLAGS: 00010202 (2.6.16.9 #1) [17179712.548000] EIP is at clear_inode+0x27/0x142 [17179712.548000] eax: 000009c4 ebx: f7c55cdc ecx: 00000000 edx: f7c55e28 [17179712.548000] esi: fc6d115b edi: f7c55cdc ebp: f29c8f58 esp: f29c8ebc [17179712.548000] ds: 007b es: 007b ss: 0068 [17179712.548000] Process rm (pid: 4741, threadinfo=f29c8000 task=f2dcdab0) [17179712.548000] Stack: <0>fc6d115b f7c55cdc fc6d115b fc6d11a5 00000001 00000000 00000000 00000000 [17179712.548000] f48965c0 00000246 f7c55cdc 00000001 f5533378 00000000 00000000 ffffffff [17179712.548000] ffffffff f7c55cdc fc6d115b c016ea67 f7c55cdc f7c55a80 fc6d269d f7df9e98 [17179712.548000] Call Trace: [17179712.548000] [<fc6d115b>] ocfs2_delete_inode+0x0/0x56b [ocfs2] [17179712.548000] [<fc6d115b>] ocfs2_delete_inode+0x0/0x56b [ocfs2] [17179712.548000] [<fc6d11a5>] ocfs2_delete_inode+0x4a/0x56b [ocfs2] [17179712.548000] [<fc6d115b>] ocfs2_delete_inode+0x0/0x56b [ocfs2] [17179712.548000] [<c016ea67>] generic_delete_inode+0x9e/0x13d [17179712.548000] [<fc6d269d>] ocfs2_drop_inode+0x5d/0x195 [ocfs2] [17179712.548000] [<c0306f0b>] __mutex_unlock_slowpath+0x93/0x200 [17179712.548000] [<c01c87b1>] _atomic_dec_and_lock+0xd/0x3c [17179712.548000] [<c016ecae>] iput+0x53/0x67 [17179712.548000] [<c0165dca>] do_unlinkat+0xba/0xf6