[ale] md2_raid1

Jim Kinney jim.kinney at gmail.com
Sun Dec 13 13:29:09 EST 2009


cat /proc/mdstat will show what is going on with software raid.
npviewer is associated with web browser tools and (stupid system hog) flash
player.

If the system is resyncing a raid mirror, let it alone.

On Sun, Dec 13, 2009 at 12:29 PM, drifter <drifter at oppositelock.org> wrote:

> My box suddenly slowed down, so I checked with TOP and a program called
> md2_raid1 is sucking 20% of the cpu cycles -- and making it difficult to
> even
> type this email. :(  This box is running FC11
>
>
>  -------------------------------------------------------------------------------------------
>
> Next stop was the log file and this is at the end of /var/log/messages:
>
> Dec 13 11:21:08 Sarge kernel: imklog 3.22.1, log source = /proc/kmsg
> started.
> Dec 13 11:21:08 Sarge rsyslogd: [origin software="rsyslogd"
> swVersion="3.22.1" x-pid="1362" x-info="http://www.rsyslog.com"] (re)start
>
> Dec 13 11:41:02 Sarge kernel: md: data-check of RAID array md2
>
> Dec 13 11:41:02 Sarge kernel: md: minimum _guaranteed_  speed: 1000
> KB/sec/disk.
>
> Dec 13 11:41:02 Sarge kernel: md: using maximum available idle IO bandwidth
> (but not more than 200000 KB/sec) for data-check.
>
> Dec 13 11:41:02 Sarge kernel: md: using 128k window, over a total of
> 202001152 blocks.
>
> Dec 13 11:41:02 Sarge kernel: md: delaying data-check of md0 until md2 has
> finished (they share one or more physical units)
>
> Dec 13 11:41:02 Sarge kernel: md: delaying data-check of md1 until md2 has
> finished (they share one or more physical units)
>
>
> --------------------------------------------------------------------------------------------------
>
> Does the OS suspect a problem with one of both of the hard drives?
>
> Turned the box off last night so the uptime is less than 2 hours.
>
> Another program, npviewer, also has been stealing cycles and I killed that
> first, hoping that the box would return to normal.  Didn't help much.
> Checking in the log I see this line:
>
> Dec 13 10:41:42 Sarge kernel: npviewer.bin[2584]: segfault at ff99cd48 ip
> ff99cd48 sp bfb6773c error 14
>
> and I have no idea what it is trying to tell me.  Note that this was about
> an hour before the box started checking the raid array.
>
> Hints would be appreciated.
>
> Sean
>
>
>
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-- 
-- 
James P. Kinney III
Actively in pursuit of Life, Liberty and Happiness
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