[CentOS] Upgrading system from non-RAID to RAID1

Thu Jan 12 07:37:47 UTC 2023
Michael Schumacher <michael_ml at gmx.de>

Hallo Simon,

> Anyway, the splitting of large disks has additional advantages. Think of
> what happens in case of a failure (power loss, kernel crash...). With the
> disk as one large chunk, the whole disk has to be resynced on restart
> while with smaller segments only those which are marked as dirty have to
> be resynced. This can make a bit difference.

I am not sure if this is true. If a underlying disk fails, it will mark all partitions on that disk as dirty, so you will have to resync them all after replacing or readding the disk into the array.

Michael