On 03.09.25 17:45, Roman Mamedov wrote:
Do you have a free drive bay and connector in your computer (or just the
connector)?
If so, the safest would be to connect all three drives, and then:
mdadm --add (new drive)
mdadm --grow -n3 (array)
mdadm --fail --remove (old drive).
mdadm --grow -n2 (array)
I like this method, hopefully I have a free connector on the board.
But still two questions left:
- Do I need to turn off the computer for the new (3rd) disk to be known?
If I remember correct I had try a hot spare in another scenario and
wasn't able to expose the new hard disk to be recognized by lsblk or
similar.
Also I see problems with the device naming as long as no hd uuids are
not used by having a drive appearing as /dev/sdx and with next reboot as
/dev/sdn. Are my concerns reasonable or am I just too afraid?
Thanks.
