On Wed, Nov 16, 2005 at 10:01:10AM +1100, you [Neil Brown] wrote: > On Tuesday November 15, vherva@xxxxxxxxxxxxxxxxx wrote: > > I had two disks taken off from the three-disk raid set (hda,hdb,hdc - hdc > > failed by itself, hdb was marked bad with raidsetfaulty). When the new disks > > were added back to the set (with raidhotadd), only two of them became active > > and one remained as a hot spare. > > > > I there a way to reconfigure all three to become active again? > > It looks from the details you gave that it never was a three-disk > set. It was only ever two-disk, possibly with a spare. I can't dig up any hard evidence, but my impression is that it _was_ [UUU] back when I had three disks in it the last time. That was in 2003, though. It was created with the mentioned raidtab and 0.90 raidttools - shouldn't that result into three active disks? Later one disk was removed, and later one broken. Now two have been added back. Anyway, you may well be right, perhaps I misremember and it was 2 active + 1 one spare. > > This is kernel 2.4.32-rc1. > > With a recent 2.6 kernel, you could > mdadm --grow --raid-disk=3 /dev/md1 > but with a 2.4 kernel, the only option is to re-create the array: > > mdadm --stop /dev/md1 > mdadm --create /dev/md1 --level=1 --raid-disks=3 /dev/hda1 /dev/hdc1 missing > mdadm /dev/md1 --add /dev/hdb1 Ok, thanks. One of the md's is rootfs, so I'll have to wait for a reboot to try that. -- v -- v@xxxxxx - 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
