On 10/4/19 8:37 AM, sven falempin wrote:
...
> How [do I] check the state of the MIRROR raid array , to detect large
> amount of failures on one of the two disk ?
> 
> Best.
> 

fsck has NOTHING to do with the status of your drives.
It's a File System ChecKer.  Your disk can be covered with unreadable
sectors but if the file system on that disk is intact, fsck reports
no problem.  Conversely, your disks can be fine, but your file system
can be scrambled beyond recognition; bad news from fsck doesn't mean
your drive is bad.

To check the status of the disks, you probably want to slip a call
to bioctl into /etc/daily.local:

# bioctl softraid0
Volume      Status               Size Device  
softraid0 0 Online      7945693712896 sd2     RAID1 
          0 Online      7945693712896 0:0.0   noencl <sd0a>
          1 Online      7945693712896 0:1.0   noencl <sd1a>

This is a happy array.  If you have a bad drive, one of those 
physical drives is going to not be online.

Nick.

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