Re: Question: how to identify failing disk in a RAID1

[Bill Davidsen <davidsen@tmr.com>]

Maurice Hilarius wrote:
> Bill Davidsen wrote:
>> ..
>> cd /sys/block/md0/md
>> echo check >sync_action; cat mismatch_cnt
>>
> Hi Bill,
>
> I am doing this as root.
> I am seeing:
>
> [root@localhost md]# echo check >sync_action; cat mismatch_cnt
> -bash: echo: write error: Device or resource busy
> 0
>
> any suggestions?

First, did you cd to the /sys/block/mdX/md directory? And did you wait 
for the check to finish, watching /proc/mdstat?
I left that out, assumed you had read it in the man pages...

-- 
Bill Davidsen <davidsen@tmr.com>
  "Woe unto the statesman who makes war without a reason that will still
  be valid when the war is over..." Otto von Bismark