I was asked by someone to include my snapper config. This is default from install, and the only snapper config in /etc/snapper/configs/root # cat /etc/snapper/configs/root # subvolume to snapshot SUBVOLUME="/" # filesystem type FSTYPE="btrfs" # btrfs qgroup for space aware cleanup algorithms QGROUP="1/0" # fraction of the filesystems space the snapshots may use SPACE_LIMIT="0.5" # fraction of the filesystems space that should be free FREE_LIMIT="0.2" # users and groups allowed to work with config ALLOW_USERS="" ALLOW_GROUPS="" # sync users and groups from ALLOW_USERS and ALLOW_GROUPS to .snapshots # directory SYNC_ACL="no" # start comparing pre- and post-snapshot in background after creating # post-snapshot BACKGROUND_COMPARISON="yes" # run daily number cleanup NUMBER_CLEANUP="yes" # limit for number cleanup NUMBER_MIN_AGE="1800" NUMBER_LIMIT="2-10" NUMBER_LIMIT_IMPORTANT="4-10" # create hourly snapshots TIMELINE_CREATE="no" # cleanup hourly snapshots after some time TIMELINE_CLEANUP="yes" # limits for timeline cleanup TIMELINE_MIN_AGE="1800" TIMELINE_LIMIT_HOURLY="10" TIMELINE_LIMIT_DAILY="10" TIMELINE_LIMIT_WEEKLY="0" TIMELINE_LIMIT_MONTHLY="10" TIMELINE_LIMIT_YEARLY="10" # cleanup empty pre-post-pairs EMPTY_PRE_POST_CLEANUP="yes" # limits for empty pre-post-pair cleanup EMPTY_PRE_POST_MIN_AGE="1800"