A shellscript to automatically create and mount LVM snapshots. See this post for details.
~# lvmsnapshot -h
lvmsnapshot version 0.3
LVM VG: /dev/vmstore
MOUNT PATH: /mnt/lvmsnapshot/vmstore
DESCRIPTION:
Automated creation and removal of LVM snapshots.
USAGE:
lvmsnapshot <options> <command> <volumename>
OPTIONS:
-c CONFIGFILE Use specified config file
-d Debug output
-e LVMEXTENSION LVM volume extension, which will be appended to the volume name
-g GROUPNAME LVM volume group name
-h Show this help
-i MAPPERINDEX Mapper index when using block device mode
-m MODE Mode to use, either block or partition
-q Be quiet
COMMANDS:
create: create LVM snapshot and mount to MOUNTPATH
remove: remove LVM snapshot
EXAMPLES:
lvmsnapshot -c /etc/lvmsnapshot.conf create vm01
lvmsnapshot -m block -i 1 -g vmstore create vm01
lvmsnapshot remove vm01
The script has changed a little since the blog post and now additionally supports block devices in KMV/qemu style. Basic usage is still the following:
lvmsnapshot create vm01
lvmsnapshot remove vm01
You'll have to define some config values to match your environment first. The easiest way to do so is to create a config file in /etc/lvmsnapshot/lvmsnapshot.conf and setting the needed values for your environment there. For a list of available config values just see the default values section in the upper part of the script. Additionally you can set part of the config values with command line options or with a custom config file (see the -c option).