On Thursday January 31, andre.s@xxxxxxxxx wrote: > Hello linux-raid. > > i have DEBIAN. > > raid01:/# mdadm -V > mdadm - v2.6.4 - 19th October 2007 > > raid01:/# mdadm -D /dev/md1 > /dev/md1: > Version : 00.91.03 > Creation Time : Tue Nov 13 18:42:36 2007 > Raid Level : raid5 .... > Delta Devices : 1, (4->5) So the array is in the middle of a "reshape". It should automatically complete... Presumably it isn't doing that? What does cat /proc/mdstat say? Where kernel log messages do you get when you assemble the array? The spare device will not be added to the array until the reshape has finished. Hopefully you aren't using a 2.6.23 kernel? That kernel had a bug which corrupted data when reshaping a degraded raid5 array. NeilBrown - 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