<html> <head> <style type="text/css">  </style> </head> <body> I know this has been mentioned a few times in the list, but I haven't seen anything too recent on this issue. I'm attempting to use GFS2 and am getting some kernel bug messages when I mount the filesystems. This seems to happen with kernels 2.6.19-2.6.21-rc6-mm1 (the one I'm currently using). The first message is this: ------------[ cut here ]------------ kernel BUG at fs/gfs2/glock.c:656! invalid opcode: 0000 [#1] last sysfs file: fs/gfs2/fstest:testfs/lock_module/block Modules linked in: lock_nolock lock_dlm gfs2 dlm configfs crc32c libcrc32c iscsi_tcp libiscsi scsi_transport_iscsi af_packet button battery ac loop pcnet32 mii ext3 jbd dm_snapshot edd dm_mod fan thermal processor ide_generic sg BusLogic piix sd_mod scsi_mod ide_disk ide_core CPU: 0 EIP: 0060:[<d0a30e09>] Not tainted VLI EFLAGS: 00010296 (2.6.21-rc6-mm1-default #1) EIP is at gfs2_glmutex_unlock+0x1b/0x1f [gfs2] eax: c223bec8 ebx: c34cc000 ecx: 00000000 edx: c23833c0 esi: c223be84 edi: c14dbf8c ebp: 00000000 esp: c14dbf58 ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068 Process gfs2_glockd (pid: 3804, ti=c14da000 task=c22e8a90 task.ti=c14da000) Stack: c0369794 c23833c0 c34cc000 d0a30e7f c34cc000 c34cc000 c26f3c94 d0a29477 00000000 00000000 00000000 00000000 00000000 c26f3c98 00000001 00000282 23ed8d84 00001337 c14dbfc0 00000000 c22e8a90 c0125c44 c14dbfb0 c14dbfb0 Call Trace: [<d0a30e7f>] gfs2_reclaim_glock+0x72/0x80 [gfs2] [<d0a29477>] gfs2_glockd+0x13/0xc0 [gfs2] [<c0125c44>] autoremove_wake_function+0x0/0x35 [<d0a29464>] gfs2_glockd+0x0/0xc0 [gfs2] [<c0125ae3>] kthread+0xa3/0xcc [<c0125a40>] kthread+0x0/0xcc [<c0104cd7>] kernel_thread_helper+0x7/0x10 ======================= Code: 5e 5f 5d e9 0a ef ff ff 83 c4 0c 5b 5e 5f 5d c3 83 ec 0c 0f ba 70 08 01 c7 40 2c 00 00 00 00 c7 40 30 00 00 00 00 e8 50 f7 ff ff <0f> 0b eb fe 56 53 89 c3 83 ec 04 8d 80 44 03 00 00 39 83 44 03 EIP: [<d0a30e09>] gfs2_glmutex_unlock+0x1b/0x1f [gfs2] SS:ESP 0068:c14dbf58 followed shortly by this: ------------[ cut here ]------------ kernel BUG at fs/gfs2/glock.c:656! invalid opcode: 0000 [#2] last sysfs file: fs/gfs2/fstest:testfs/lock_module/block Modules linked in: lock_nolock lock_dlm gfs2 dlm configfs crc32c libcrc32c iscsi_tcp libiscsi scsi_transport_iscsi af_packet button battery ac loop pcnet32 mii ext3 jbd dm_snapshot edd dm_mod fan thermal processor ide_generic sg BusLogic piix sd_mod scsi_mod ide_disk ide_core CPU: 0 EIP: 0060:[<d0a30e09>] Not tainted VLI EFLAGS: 00010292 (2.6.21-rc6-mm1-default #1) EIP is at gfs2_glmutex_unlock+0x1b/0x1f [gfs2] eax: c223bf64 ebx: c223bf20 ecx: 00000001 edx: c223bc14 esi: 00000001 edi: c34cc000 ebp: d0a3125c esp: c14d9f78 ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068 Process gfs2_scand (pid: 3803, ti=c14d8000 task=c22ea030 task.ti=c14d8000) Stack: c26f3c20 c223bc14 c223bf20 d0a30068 00000003 c26f3c98 00000001 00001078 c34cc000 d0a29524 00000000 d0a3018d c038ad60 c34cc000 c26f3c94 d0a29533 c26f3c94 d0a29524 c34cc000 c0125ae3 00000000 00000000 ffffffff ffffffff Call Trace: [<d0a30068>] examine_bucket+0x38/0x59 [gfs2] [<d0a29524>] gfs2_scand+0x0/0x2d [gfs2] [<d0a3018d>] gfs2_scand_internal+0x18/0x24 [gfs2] [<d0a29533>] gfs2_scand+0xf/0x2d [gfs2] [<d0a29524>] gfs2_scand+0x0/0x2d [gfs2] [<c0125ae3>] kthread+0xa3/0xcc [<c0125a40>] kthread+0x0/0xcc [<c0104cd7>] kernel_thread_helper+0x7/0x10 ======================= Code: 5e 5f 5d e9 0a ef ff ff 83 c4 0c 5b 5e 5f 5d c3 83 ec 0c 0f ba 70 08 01 c7 40 2c 00 00 00 00 c7 40 30 00 00 00 00 e8 50 f7 ff ff <0f> 0b eb fe 56 53 89 c3 83 ec 04 8d 80 44 03 00 00 39 83 44 03 EIP: [<d0a30e09>] gfs2_glmutex_unlock+0x1b/0x1f [gfs2] SS:ESP 0068:c14d9f78 After I get those messages, I can list files, create files, and delete files. I run into problems if I try to use quotas or ACLs on the filesystem, and I can't unmount the filesystem - I have to hard reset the machine. Also, it doesn't seem to matter whether I use the lock_dlm or lock_nolock protocols - both seem to generate these messages. Nick Couchman Systems Integrator SEAKR Engineering, Inc. 6221 South Racine Circle Centennial, CO 80111 Main: (303) 790-8499 Fax: (303) 790-8720 Web: <a href="http://www.seakr.com">http://www.seakr.com</a> </body> </html>