On Mon, 2009-07-13 at 12:20 +0200, Tim Verhoeven wrote:
On Mon, Jul 13, 2009 at 12:13 PM, Coert Waagmeesterlgroups@waagmeester.co.za wrote:
I have a machine with 2 SATA 250GB disks which I want to upgrade to 1TB SATAs
This is the partition structure on both disks:
Disk /dev/sda: 250.0 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System /dev/sda1 * 1 25 200781 fd Linux raid autodetect /dev/sda2 26 1971 15631245 fd Linux raid autodetect /dev/sda3 1972 30401 228363975 fd Linux raid autodetect
there are 3x RAID1 arrays. First is for /boot Second if for swap Third is for LVM (contains / and other filesystems)
What is the easiest way to get this upgraded?
I thought that I could maybe dd all the LVM volumes and /boot into files, setup the new RAID1 arrays on the 1TB disks, and dd everything back? or is there an easier way?
The software RAID 1 implementation of the kernel allows the array to be extended. First you replace each old disk with the new 1TB disks and each time rebuild the array. After this the array is still only 250GB but the partitions are already 1TB in size. Then use the --grow option of mdadm to increase the array to 1TB. Then it starts rebuilded the new space. When this is ready you can use the pvextend command to tell LVM that the PV has grown. Then the new space should be available in the volume group and you can increase the LV's and the filesystems inside them.
Regards, Tim
Great, I will give that a try.
Thanks. I will ofcourse still make backups to be on the safe side.
Regards, Coert