On Friday 17 August 2007 03:03:58 you wrote: > > Very odd.. > Please report which kernel version and mdadm version you are using, > and the exact sizes of each of the devices in the array (e.g. cat > /proc/partitions). > I am using 2.6.22-gentoo-r3 (but within an hour i am going to try 2.6.22 vanilla, to be sure), mdadm 2.6.2 The partition ( well, whole disks actually, i created a raid5 over the complete disks ) explains it all : 8 16 244198584 sdb 8 32 244198584 sdc 8 48 244198584 sdd 8 64 244197527 sde 8 80 244198584 sdf 8 96 244198584 sdg Seems the disk i am trying to add is slightly smaller. Strange thing is, these disks have been running in a raid5 array for over a year, and are all the same make model & firmware. How can it be that this disk "shrunk" a bit ? Kind regards den_RDC - 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