On Tue, Jan 31, 2017 at 05:23:10PM -0500, Jiri B wrote: > I have a disk which used to be boot disk of a degraded RAID 1 (softraid). > The second disk is totally gone. > > I don't want to use this disk as RAID 1 disk anymore, just to get data > from it. > > I'm asking because when I plugged the disk, bioctl said 'not enough disks'. > > Do we really have to necessary require two disks when attaching already > existing > degraded RAID 1 with only one disk available?
Can you describe in more detail what you did to "plug the disk"? It sounds like you ran 'bioctl' in a way that tries to create a new RAID1 volume. Why? If the disk is present during system boot, is it not auto-assembled as a degraded RAID1 volume? I would expect a degraded softraid RAID1 disk to show up which you can copy data from.
