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Svavar Örn Eysteinsson

2013-Apr-12 10:39 UTC

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

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

James Pearson

2013-Apr-12 11:05 UTC

head link

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

Svavar ?rn 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) )
Have a look at the thread starting at:

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

There is a fix in the latest centosplus kernel

James Pearson

Svavar Örn Eysteinsson

2013-Apr-12 13:18 UTC

head link

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

Thank you James.
I installed the latest centosplus kernel, and it fixed it.

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

Thanks allot.

Svavar


On 12.4.2013, at 11:05, James Pearson wrote:
> Svavar ?rn 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) )
> 
> Have a look at the thread starting at:
> 
> <http://lists.centos.org/pipermail/centos/2013-March/132931.html>
> 
> There is a fix in the latest centosplus kernel
> 
> James Pearson
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos

James A. Peltier

2013-Apr-12 19:05 UTC

head link

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

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
| 
| 
| 
| _______________________________________________
| CentOS mailing list
| CentOS at centos.org
| 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 at sfu.ca
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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