currently I have a ppc64 IBM blade running with RHEL6.1 RC2 (2.6.32-131.0.13.el6.ppc64). Twelve multipath devices are attached and I/O is running.
I've checked dmesg and found:
[root@elm8a211 ~]# dmesg
INFO: task kjournald:7938 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kjournald D 0000000000000000 0 7938 2 0x00008080
Call Trace:
[c0000003c82f3420] [c0000003c82f34d0] 0xc0000003c82f34d0 (unreliable)
[c0000003c82f35f0] [c000000000014288] .__switch_to+0xf8/0x1d0
[c0000003c82f3680] [c00000000059cc18] .schedule+0x408/0xd30
[c0000003c82f3960] [c00000000059d5d0] .io_schedule+0x90/0x110
[c0000003c82f39f0] [c0000000001fc2f8] .sync_buffer+0x68/0x80
[c0000003c82f3a60] [c00000000059e104] .__wait_on_bit+0xb4/0x130
[c0000003c82f3b10] [c00000000059e1f0] .out_of_line_wait_on_bit+0x70/0x90
[c0000003c82f3bf0] [c0000000001fc1b0] .__wait_on_buffer+0x30/0x50
[c0000003c82f3c70] [d000000004043bc4] .journal_commit_transaction+0x624/0x1630 [jbd]
[c0000003c82f3de0] [d0000000040488fc] .kjournald+0x11c/0x330 [jbd]
[c0000003c82f3ed0] [c0000000000bb02c] .kthread+0xbc/0xd0
[c0000003c82f3f90] [c0000000000323f4] .kernel_thread+0x54/0x70
[root@elm8a211 ~]#
I have no idea where it's coming from..system i still up'n running.
Best regards,
Christian May
IBM
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