>>>>> "Gandalf" == Gandalf Corvotempesta <gandalf.corvotempesta@xxxxxxxxx> writes: Gandalf> 2018-03-27 16:10 GMT+02:00 John Stoffel <john@xxxxxxxxxxx>: >> If you're running LVM on top of this array, then I would simply: >> >> 1. add three new disks into a new RAID1 array spanning the entire >> disk as /dev/md1 >> 2. pvcreate /dev/md1 >> 3. vgextend <vg> /dev/md1 >> 4. pvmove -b /dev/md0 >> 5. wait for the move to complete >> 6. vgreduce <vg> /dev/md0 Gandalf> I did this (pvmove) many times before, but only on small Gandalf> volumes, never on 500GB. I'm not really sure about data Gandalf> consistency during the move. What in case of suddely poweroff Gandalf> or similiar? It *should* be ok, since it's just moving 4k blocks one at atime, and updating the system as it goes. Also, it doesn't remove the source LV until the copy is complete, so at worse you have a partial destination LV to remove and start over. John -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
