I've been trying to get snapshots of my guests working without any luck. The GUI says the guest has been reverted, but when I log into the guest all of my changes are still present. It's as if the guest never reverted.
Host System Info:
-KVM virtualization (installed from CentOS repos)
-VMs stored in a Volume Group on host
-KVM Image is kvm-64-centos7.0-base downloaded from Cloudmin
- Create KVM virtual machine using Cloudmin image. 1024mb RAM, 10gb Disk
- Create Snapshot using Cloudmin GUI (Change to guest system in menu -> Resources -> Disk Snapshots). Snapshot ID is "testsnapshot1", 20% out of 10GB. The displayed snapshot size is 2gb.
-SSH into guest and update OS using yum.
-Create a few test files in /root to see if they are removed after the snapshot is reverted.
-Reboot guest from GUI.
-Revert snapshot using Cloudmin GUI (Change to guest system in menu -> Resources -> Disk Snapshots). Before revert, maximum usage on snapshot shows about 73%.
-When I SSH into the guest after the revert, all of the packages are still updated and the test files are still in /root. I was expecting that after a snapshot revert, all the updates and added files on the guest would be lost.