Shrink virtual disk in Xenserver 5.6

[hawk82]

I've got a Xenserver 5.6 SP2 (open-source free edition) server running a couple of virtual machines for personal use. One of the VMs running CentOS 5.6 w/ext3 formatted partitions, I'd like to resize its virtual disk, from the current 200GB down to about 25GB since the VM doesn't need a lot of disk space. From what I understand, I should be able to boot gParted ISO in the VM and shrink the partition space down. After that, I am not sure what I need to do. Googling has been inconclusive. Some say the lvreduce command no longer exists in Xenserver 5.6. I'd prefer to not have to reinstall the VM if possible. It runs my mail server and it took awhile to customize and tweak it to run just fine. Any ideas?

 

[lassiterb]

Not familiar with Xenserver at all, however it seems that after you reduce the partition down to 25GB, you could then use a disc imaging/partition imaging utility to backup the disk/partition, create a new virtual disk of the size you need then restore the disk image to it. Then switch out the old virtual disk with the new one. I'm still a noob when it comes to virtualization (been lurking here for a while picking up what I can though), so if this sounds like a stupid idea then it probably is.