Fedora 23 Snapshot LVM Script

Copy#!/bin/bash
# Creates a snapshot of the volume storing the KVM images, and then
# using that snapshot copies the images. The benefit of using a snapshot
# (as opposed to copying the images) is that the VM does not need to be
# shutdown.

# Include appropriate paths (since cron doesn't use your normal environment)
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

# The date of the backup
bkpdate=`date +%Y-%m-%d`

# Create a LVM snapshot of the var LV
lvcreate -L 70G -s -n varsnap /dev/fedora_host/var

# Mount the snapshot
mount /dev/fedora_host/varsnap /mnt/snapshot

# Copy the KVM images
tar --create --sparse --file /backup/guest1-${bkpdate}.img.tar /mnt/snapshot/vm/guest1.img
tar --create --sparse --file /backup/guest2-${bkpdate}.img.tar /mnt/snapshot/vm/guest2.img

# Remove the snapshot
umount /mnt/snapshot
lvremove -f /dev/fedora_host/varsnap