raid1 recover

Dmitriy Tochansky tochansky at
Wed Jul 17 03:27:00 PDT 2013


I need some help about recover raid1. I have a raid ar0 with two disks. 
After first disk fail, I replaced it with new clean disk.
After boot I did:
# natacontrol addspare ar0 ad0
# natacontrol rebuild ar0

I type:

# natacontrol status ar0
and see raid in rebuild state. In a few seconds system hangs and I had 
to reboot it. Now I see:

# natacontrol status ar0
ar0: ATA RAID1 subdisks: DOWN ad1 status: DEGRADED

# natacontrol addspare ar0 ad0
natacontrol: ioctl(IOCATARAIDADDSPARE): Device busy

and finaly:
# natacontrol rebuild ar0
natacontrol: ioctl(IOCATARAIDREBUILD): Input/output error

Can someone point me to proper manual about how to recover failed disks 
and may be how to recover my current situation.


More information about the Users mailing list