Comment 1 for bug 1259879

Steps to reproduce:

bzr branch lp:checkbox
wget http://cloud-images.ubuntu.com/raring/current/raring-server-cloudimg-i386-disk1.img
cp raring-server-cloudimg-i386-disk1.bak
# edit /etc/checkbox.d/virtualization.cfg and put the following:
# image: /path/to/raring-server-cloudimg-i386-disk1.img
# timeout: 30
sudo checkbox/checkbox-old/scripts/virtualization kvm --debug
# Will Boot successfully the first time
sudo checkbox/checkbox-old/scripts/virtualization kvm --debug

Expected result: "Booted successfully" for the second time
Actual result: KVM instance failed to boot

this is due to a problem mounting filesystems, as seen in virt_debug:

[ 2.754950] init: mountall main process (284) killed by FPE signal
General error mounting filesystems.
A maintenance shell will now be started.
CONTROL-D will terminate this shell and reboot the system.

also, as Yung reported, md5sum raring-server-* will show that the image is different from what the original one had, although that doesn't necessarily mean it was corrupted, maybe it was not unmounted properly and is now damaged.