On Saturday August 5, shane@xxxxx wrote: > On Sat, Aug 05, 2006 at 06:31:37PM +0100, David Greaves wrote: > > > Say going from 300gbx4 to 500gbx4. Can one replace them > > > one at a time, going through fail/rebuild as appropriate > > > and then expand the array into the unused space > > Yes. > > I didn't see anything in the mdadm manual on this. Would > one just do a --grow /dev/md0 once the disks were changed > out? It looks like --grow is used to change the number of > devices in the array but not the device size itself. It does both (and more). mdadm --grow /dev/md0 --raid-disk=5 changes the number of drives to 5. mdadm --grow /dev/md0 --size=max changes the used-size of each drive to the maximum available. mdadm --grow /dev/md0 --bitmap=internal adds an internal write-intent bitmap mdadm --grow /dev/md0 --chunksize=128 might change the chunksize to 128k.. but doesn't yet. Maybe one day :-) 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
