On Wednesday 07 September 2005 12:58, Christoph Gysin wrote: > First, let me recommend you mdadm. It's a replacement for the old > raidtools. *Much* better IMHO.
VERY much so. > - Create a new RAID1 in degraded state from B2: > # mdadm --create /dev/md0 --level 1 --raid-devices 2 /dev/B2 missing > > - Copy contents from A2 to md0 > - umount A2 > - add A2 to md0: > # mdadm /dev/md0 --add /dev/A2 Quicker method :) create B1 and B2 umount /dev/A2 # mdadm --create /dev/md0 -l1 -n2 /dev/A2 /dev/B2 You CAN create a mirror of an existing partition, and NOT lose data. I know, I've done it. You can also re-create an existing array (instead of the obvious re-assembly), and keep all your data. The software raid drivers and tools are surprisingly intelligent. But as always, keep backups :) -- Mike Williams -- gentoo-user@gentoo.org mailing list
