adding disks to an existing RAID5 array
Hi,
I have recently had to upgrade one of our v440 / storedge3310 / solaris 9 systems, as out usual solaris guru is on holiday.
I have added the extra disks to the RAID5 array on the storedge 3310 OK, and i now see 2 patitions within 1 logical disk, as expected.
However, the solaris box still sees the partition as the old size. Could anyone tell me, or point me to the relevent documentation, how I can add the new partition on the array to the old partition on the array, or how I can merge both partitions in the eyes of solaris.
I am sure it must be possible, but i can't find the info anywhere.
thanks
Gareth
[659 byte] By [
gansell] at [2007-11-26 6:35:42]
# 2
I have almost the same question. I'm going to guess the answer is NO in my
case. I've got a 4-disk RAID 1+0. I'd like to add additional drives to the
existing Logical Drive (and do have additional pairs to add in). And I'd like to just
have all the additional disk space go right onto the existing 1 partition that the
logical drive has right now. We're simply using logging UFS with no volume manager.
So is the answer that with the lowly UFS and no volume manager, there's no
way to extend the existing logical drive/partition?
Thanks!
# 3
Most arrays can grow the raid group but then add the space as a seperate partition or lun that can be exported to the host.
Case1: If thats the case then you'd have to use a volume manager to concat the luns and then growfs to get the filesystem to grow.
Case 2: If it can add to the existing partition or lun then you should be able to just use growfs if, and confirm this, your LUN has one parition on it. If you've sliced the LUN up then you'll be stuck with adding an extra partition with format and your back at case 1 above.
In both cases you'd need to make sure that Solaris sees either, as in case 1, the new lun or, as in case 2, the lun grow. The former is pretty easy. The latter might take a reboot or a new label operation in format.
