Hello, I have a server I'm currently finalising the setup of, which uses two 80G SATA drives in a RAID-1 (md) with LVM on top. When I've got it how I want it I need to replace the 80G drives with a much larger pair. Now, I've kept notes about my setup of course so I can just put the new disks in and do it all over again, but that strikes me as a big waste of time. I also of course have space elsewhere to take an image of the md devices with dd and I could copy them back over the top once md is set up again on the new disks. The majority of space though is in my single LVM volume group and only 18.5G of this 72.5G is used, so taking an 80G image seems to also be rather a waste of time. Here's the setup: /dev/md0 (sda1, sdb1) is swap /dev/md1 (sda2, sdb2) is /boot /dev/md2 (sda3, sdb3) is / /dev/md4 (sda5, sdb5) is an LVM PV and VG 'mainvg' Everything else is LVs within mainvg and all filesystems are ext3. So how would you accomplish the task of replacing sda and sdb with larger disks in the least amount of effort? Downtime is not a problem, taking backups of the data is not a problem, booting off a live cd is not a problem; the goal is to find the least labour-intensive way to do this. The best I can think of booting off a live cd, taking a dd of each md device to another server, installing the new drives, setting up the md devices again and then overwriting them with the images. Will I run into problems with their UUIDs being overwritten? Cheers, Andy
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