On Sat, Oct 5, 2019 at 8:39 AM Nick Holland <[email protected]> wrote: > > 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. >
My moral of the story is: if your raid array is not mounting, check smart, check bioctl, FSCK each disk separately and then restore or dump the bad drive Next, Raid 5 is cool . It knows which disk failed the checksum ?
