xfsaild causing load, and stuck in D state - Centos 6.4 x64

[Svavar Örn Eysteinsson]

I installed the latest centosplus kernel, and it fixed it.

( <http://lists.centos.org/pipermail/centos/2013-March/132931.html> )

Looks like this problem will be fixed in kernel-2.6.32-358.5.1.el6

https://bugzilla.redhat.com/show_bug.cgi?id=921958


On 12.4.2013, at 10:38, Svavar Örn Eysteinsson wrote:

> 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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