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Old 08-17-2010, 01:44 PM
Steve Blackwell
 
Default kernel crash

I leave my computer on 24/7 so that my backups can run at night.
Lately, it has been crashing during the night usually leaving no trace
of what happened. Last night it crashed but left this
in /var/log/messages:

Aug 17 01:04:56 steve kernel: INFO: task kjournald:1960 blocked for more than 120 seconds.
Aug 17 01:04:56 steve kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 17 01:04:56 steve kernel: kjournald D 00002743 0 1960 2 0x00000080
Aug 17 01:04:56 steve kernel: cf98fd9c 00000046 ff2f442e 00002743 00032558 00000000 f15c756c cf82d400
Aug 17 01:04:56 steve kernel: c0a5e6ac c0a63140 f15c756c c0a63140 c0a63140 cf98fd74 c05b61ef f1714e18
Aug 17 01:04:56 steve kernel: 00000001 00000000 00002743 f15c72c0 b39690c0 1b48082c f6630a60 c2208140
Aug 17 01:04:56 steve kernel: Call Trace:
Aug 17 01:04:56 steve kernel: [<c05b61ef>] ? cfq_may_queue+0x48/0xa8
Aug 17 01:04:56 steve kernel: [<c0793ef7>] io_schedule+0x5f/0x98
Aug 17 01:04:56 steve kernel: [<c05ac02f>] get_request_wait+0xc7/0x13c
Aug 17 01:04:56 steve kernel: [<c0454641>] ? autoremove_wake_function+0x0/0x34
Aug 17 01:04:56 steve kernel: [<c05ac4a4>] __make_request+0x27f/0x386
Aug 17 01:04:56 steve kernel: [<c04cebd4>] ? __slab_alloc+0x269/0x3f6
Aug 17 01:04:56 steve kernel: [<c05ab011>] generic_make_request+0x286/0x2d0
Aug 17 01:04:56 steve kernel: [<c04a77e5>] ? mempool_alloc_slab+0x13/0x15
Aug 17 01:04:56 steve kernel: [<c04a78b1>] ? mempool_alloc+0x5c/0xf2
Aug 17 01:04:56 steve kernel: [<c05ab122>] submit_bio+0xc7/0xe0
Aug 17 01:04:56 steve kernel: [<c04fc9d3>] ? bio_alloc_bioset+0x2a/0xb9
Aug 17 01:04:56 steve kernel: [<c04f9038>] submit_bh+0xf4/0x114
Aug 17 01:04:56 steve kernel: [<c0562f74>] journal_commit_transaction+0x38b/0xcc7
Aug 17 01:04:56 steve kernel: [<c044747a>] ? lock_timer_base+0x26/0x45
Aug 17 01:04:56 steve kernel: [<c0447696>] ? try_to_del_timer_sync+0x5e/0x66
Aug 17 01:04:56 steve kernel: [<c0565f1d>] kjournald+0xb8/0x1cc
Aug 17 01:04:56 steve kernel: [<c0454641>] ? autoremove_wake_function+0x0/0x34
Aug 17 01:04:56 steve kernel: [<c0565e65>] ? kjournald+0x0/0x1cc
Aug 17 01:04:56 steve kernel: [<c0454409>] kthread+0x64/0x69
Aug 17 01:04:56 steve kernel: [<c04543a5>] ? kthread+0x0/0x69
Aug 17 01:04:56 steve kernel: [<c04041e7>] kernel_thread_helper+0x7/0x10

This happened in the middle of the backup which started at 1:00am and finished (successfully) at 1:28am so perhaps the backup blocked the kjournald process but it didn't crash the computer because there are later messages in the backup log and the messages file.

The last entry in the messages file is:

Aug 17 02:03:55 steve smartd[2347]: Device: /dev/sda [SAT], SMART Prefailure Attribute: 3 Spin_Up_Time changed from 167 to 168
Aug 17 02:03:55 steve smartd[2347]: Device: /dev/sda [SAT], SMART Usage
Attribute: 194 Temperature_Celsius changed from 122 to 124

Could a hard drive get shut down because it was getting too hot? What would be a normal temp for a hard drive that has just completed a backup? 124C seems really hot. The HD cooling fan had been broken so I replaced it this past weekend but it doesn't seem to have helped. Too late? Permanent HD damage already done?
Any other comments or suggestions?

Thanks
Steve


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