[ale] md2_raid1

[scott]

sounds like one of the two drives is having issues.. and the software RAID1 driver is working at keeping the two disks in sync (mirrored).  I would look at the logs to see if either drive is reporting issues.  Also see if you can can run some SMART tools against the drive to see if it will tell you what is going on.   Now it might be a bad cable, bad power to drive, or bad HD controller also.  Unless you had a power outage or taking some sort of power spike, those are less likely.  cables and HD Controllers generally dont fail without some help.

Thanks and good luck!!


On Dec 13, 2009, at 12:29 PM, drifter 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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