btrfs-snp
Create BTRFS snapshots, manually or from cron.
Usage
# btrfs-snp
Usage: btrfs-snp <dir> (<tag>) (<limit>) (<seconds>) (<destdir>)
dir │ create snapshot of <dir>
tag │ name the snapshot <tag>_<timestamp>
limit │ keep <limit> snapshots with this tag. 0 to disable
seconds │ don't create snapshots before <seconds> have passed from last with this tag. 0 to disable
destdir │ store snapshot in <destdir>, path absolute or relative to <dir>
Examples
Manual
Snapshot of home
# btrfs-snp /home
Tagged snapshot of root
# btrfs-snp / preupgrade
Tagged snapshot of root, but keep maximum 10
# btrfs-snp / preupgrade 10
Cron
Hourly snapshot for one day, daily for one week, weekly for one month, and monthly for one year.
# cat > /etc/cron.hourly/btrfs-snp <<EOF
#!/bin/bash
/usr/local/sbin/$BIN /home hourly 24 3600
/usr/local/sbin/$BIN /home daily 7 86400
/usr/local/sbin/$BIN /home weekly 4 604800
/usr/local/sbin/$BIN / weekly 4 604800
/usr/local/sbin/$BIN /home monthly 12 2592000
EOF
chmod +x /etc/cron.hourly/btrfs-snp
Inspired by btrfs-snap by Birger Monsen
More at ownyourbits.com