It's a kernel bug and can safely be ignored.
----- Original Message -----
| PowerEdge 2850 with PERC SCSI RAID controller.
| 16GB RAM
| Dual Intel(R) Xeon(TM) CPU 3.00GHz
| Using megaraid driver and xfs on 3x 300GB SCSI disks as /dev/sdb
| (total 572GB) (RAID-5)
|
| Stock Centos 6.4 x64, everything updated.
| Kernel : 2.6.32-358.2.1.el6.x86_64 #1 SMP
|
| My Load always shows :
|
| top - 10:30:21 up 23:09, 1 users, load average: 0.99, 0.96, 0.79
|
| yet there is no services what-so-ever doing anything.
|
| Using PowerTOP I can see that xfsaild is causing second most wake-ups
| (after kernel core : hrtimer_start (tick_sched_timer) )
|
|
| < Detailed C-state information is not P-states (frequencies)
| 3.00 Ghz 100.0%
| 1500 Mhz 0.0%
| 1125 Mhz 0.0%
| 750 Mhz 0.0%
| 375 Mhz 0.0%
|
| Wakeups-from-idle per second : 125.1 interval: 10.0s
| no ACPI power usage estimate available
|
| Top causes for wake-ups:
| 47.7% (119.6) <kernel core> : hrtimer_start (tick_sched_timer)
| 39.9% (100.0) xfsaild/sdb1 : xfsaild (process_timeout)
|
|
| Again, using TOP I can see that xfsaild is stuck in D state. It never
| changes.
|
|
| 10050 root 20 0 0 0 0 D 0.0 0.0 0:01.17
| xfsaild/sdb1
|
|
| My only way to fix this, is either rebooting the machine, unmounting
| the volume
| and mounting it back online. I've been rsyncing data twice between
| this server and another
| one. The rsync process takes about 30m-1hour. After the rsync
| operation I see that
| the xfsaild is stuck in D State and my Load is near 1.00.
|
|
| I'v had no problem what-so-ever on centos 6.3 or early versions on
| other servers.
|
| Any thoughts ?
| Information, help would be much appreciated.
|
| Thanks in advance.
|
| Best regards,
|
| Svavar
|
|
|
| _______________________________________________
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| CentOS@xxxxxxxxxx
| http://lists.centos.org/mailman/listinfo/centos
|
--
James A. Peltier
Manager, IT Services - Research Computing Group
Simon Fraser University - Burnaby Campus
Phone : 778-782-6573
Fax : 778-782-3045
E-Mail : jpeltier@xxxxxx
Website : http://www.sfu.ca/itservices
“A successful person is one who can lay a solid foundation from the bricks others have thrown at them.” -David Brinkley via Luke Shaw
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