I have a RAID5 with 5 disks on my machine and suspect the motherboard chipset to fail at some points and make my raid going in degraded mode.
Last time it happened I noticed it on the failure of the 2nd drive connected to the same chipset and lost a lot of data. So I would like to prevent this, and especially I would like to have mdadm disable writes on the raid if one of the disk fails. So that in between I get notified, I recover and can use my system again. Sadly I could not find it in
man mdadm so I was wondering if this is possible via a tool or hidden option since for me it looks like a standard feature of a RAID system.
If this is not possible I would also be happy with a solution to stop the raid if degraded.