Chen, Yukun
2004-Jun-16 04:22 UTC
[Ocfs2-devel] System hang issue when 2 processes on same node write to a file simultaneousely
Hi all,
I meet a system hang when trying do a file-writing operation on 2
process in same node. Steps to duplicate
1.load_ocfs2
2. mkfs.ocfs2 -b 4 -L ocfs2 -m /ocfs /dev/sdc2
3. mount /dev/sdc2 /ocfs -t ocfs2
4. process 1 writes to /ocfs2/testfile 1000 times at file-offset 100,
in the meanwhile, process 2 writes to the same file at the same offset.
Then system hang with the following message from dmesg:
##################################################3
kernel BUG at ll_rw_blk.c:1027!
invalid operand: 0000
ocfs2 lp parport autofs e100 e1000 floppy sg microcode keybdev mousedev
hid input usb-uhci usbcore ext3 jbd qla2300 qla2300_conf aic7xxx sd_mod
scsi_mod
CPU: 0
EIP: 0060:[<c01bda27>] Not tainted
EFLAGS: 00010246
EIP is at __make_request [kernel] 0xb7 (2.4.22-1.2115.nptl)
eax: 0000000c ebx: 00000000 ecx: 00000000 edx: dc43ec80
esi: 00000001 edi: 00f0a400 ebp: df0c4414 esp: dc223de8
ds: 0068 es: 0068 ss: 0068
Process ocfs2nm-0 (pid: 5034, stackpage=dc223000)
Stack: dc43ec80 00000000 e0a96ba7 dff0be80 000000f0 c038ff98 e0a96e60
dcda7e00
5d700000 00000080 00000000 00000000 df0c4444 000007f9 00000000
00000001
0000002a 000007f9 dc43ec80 00000001 00f0a400 0000002a c01be1ea
df0c4414
Call Trace: [<e0a96ba7>] ocfs_bh_sem_alloc [ocfs2] 0x13 (0xdc223df0)
[<e0a96e60>] ocfs_bh_sem_lookup [ocfs2] 0x134 (0xdc223e00)
[<c01be1ea>] generic_make_request [kernel] 0xda (0xdc223e40)
[<e0a96fe5>] ocfs_bh_sem_lock [ocfs2] 0x21 (0xdc223e50)
[<c01be297>] submit_bh [kernel] 0x57 (0xdc223e68)
[<e0a9ad7f>] ocfs_read_bhs [ocfs2] 0x2b3 (0xdc223e90)
[<e0a96bbe>] ocfs_bh_sem_free [ocfs2] 0x12 (0xdc223ea0)
[<e0aa2bc1>] ocfs_volume_thread [ocfs2] 0x181 (0xdc223ee0)
[<c0109b52>] ret_from_fork [kernel] 0x6 (0xdc223fbc)
[<e0aa2a40>] ocfs_volume_thread [ocfs2] 0x0 (0xdc223fe0)
[<c010741d>] kernel_thread_helper [kernel] 0x5 (0xdc223ff0)
Code: 0f 0b 03 04 44 4f 29 c0 8b 4c 24 64 8b 15 f0 f8 3d c0 8b 41
------------[ cut here ]------------
kernel BUG at ll_rw_blk.c:1027!
invalid operand: 0000
ocfs2 lp parport autofs e100 e1000 floppy sg microcode keybdev mousedev
hid input usb-uhci usbcore ext3 jbd qla2300 qla2300_conf aic7xxx sd_mod
scsi_mod
CPU: 0
EIP: 0060:[<c01bda27>] Not tainted
EFLAGS: 00010246
EIP is at __make_request [kernel] 0xb7 (2.4.22-1.2115.nptl)
eax: 00000200 ebx: 00000001 ecx: 00000001 edx: dcedf580
esi: 00000001 edi: 00f0a400 ebp: df0c4414 esp: dcedbd80
ds: 0068 es: 0068 ss: 0068
Process kjournald (pid: 5036, stackpage=dcedb000)
Stack: 00000039 00000048 00000202 00000001 00000001 00000001 00000001
df0c3000
00000287 00000200 00000000 00000000 df0c4444 defedc00 00000000
00000001
00001378 0003344c dcedf580 00000001 00f0a400 00001378 c01be1ea
df0c4414
Call Trace: [<c01be1ea>] generic_make_request [kernel] 0xda
(0xdcedbdd8)
[<c01be297>] submit_bh [kernel] 0x57 (0xdcedbe00)
[<c01476db>] __refile_buffer [kernel] 0x5b (0xdcedbe14)
[<c01be426>] ll_rw_block [kernel] 0xf6 (0xdcedbe28)
[<e095991c>] journal_update_superblock_R8547d76d [jbd] 0x5c (0xdcedbe50)
[<e0956842>] journal_commit_transaction [jbd] 0x10f2 (0xdcedbe6c)
[<c0119320>] recalc_task_prio [kernel] 0x90 (0xdcedbf0c)
[<c011b389>] context_switch [kernel] 0x79 (0xdcedbf44)
[<c0119e78>] schedule [kernel] 0x258 (0xdcedbf64)
[<e0958c3a>] kjournald [jbd] 0x13a (0xdcedbfb8)
[<e0958b00>] kjournald [jbd] 0x0 (0xdcedbfc4)
[<e0958ae0>] commit_timeout [jbd] 0x0 (0xdcedbfd8)
[<e0958b00>] kjournald [jbd] 0x0 (0xdcedbfe8)
[<c010741d>] kernel_thread_helper [kernel] 0x5 (0xdcedbff0)
#################################################################33
Any ideas about it?
Thanx.
Aaron
Intel China Software Lab
Tel: 8621-52574545 Ext.1587
E_mail:yukun.chen@intel.com
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