I've got a problem. I created a RAID-1 array with only one drive by using:
mdctl --create /dev/md0 --level=1 --raid-disks=1 /dev/hda2
Now, I've installed a second drive and want to add it to the array. So I
tried:
mdctl -a /dev/md0 /dev/hdc2
But this does not work as expected. It adds /dev/hdc2 to the list of devices
in /proc/mdstat:
md0 : active raid1 hdc2[1] hda2[0]
6144768 blocks [1/1] [U]
but it does not resync the array. I guess this has something to do with the
fact I originally specified --raid-disks=1. Can it be fixed without
rebuilding the array from scratch (i.e. without data loss)?
Thanks.
Jordan Russell
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