NAME

       snapper-configs - Configuration files for snapper configs

DESCRIPTION

       Each file /etc/snapper/configs/* describes a snapper config.

VARIABLES

       The following is a list of variables that can be present in the configuration file.
       Boolean values must be "yes" or "no".

       SUBVOLUME=path
           Path of the subvolume or mount point.

           There is no default value. The value must always be specified.

       FSTYPE=value
           Filesystem type for the subvolume.

           Default value is "btrfs" but it's recommended to always specify the filesystem type.

       QGROUP=qgroup
           The btrfs quota group used for space aware cleanup algorithms.

           Only supported for btrfs.

       SPACE_LIMIT=float
           Limit for the fraction of the filesystems space the snapshots should use.

           Only supported for btrfs.

           Default value is "0.5".

           New in version 0.3.0.

       ALLOW_USERS=users
           List of users allowed to operate with the config. The user-names must be separated by
           spaces. Spaces in usernames can be escaped with a "\".

           Also see the PERMISSIONS section in snapper(8).

           Default value is "" but "root" is always implicitly included.

       ALLOW_GROUPS=groups
           List of groups allowed to operate with the config. The group-names must be separated
           by spaces. Spaces in group-names can be escaped with a "\".

           Also see the PERMISSIONS section in snapper(8).

           Default value is "".

       SYNC_ACL=boolean
           Defines whether snapper will sync the users and groups from ALLOW_USERS and
           ALLOW_GROUPS to the ACL of the .snapshots directory.

           Also see the PERMISSIONS section in snapper(8).

           Default value is "no".

           New in version 0.2.0.

       BACKGROUND_COMPARISON=boolean
           Defines whether pre and post snapshots should be compared in the background after
           creation.

           Default value is "yes".

       NUMBER_CLEANUP=boolean
           Defines whether the number cleanup algorithm should be run for the config.

           Default value is "no".

       NUMBER_MIN_AGE=seconds
           Minimal age for snapshots to be deleted by the number cleanup algorithm.

           Default value is "1800".

       NUMBER_LIMIT=number or range
           Defines how many snapshots the number cleanup algorithm should keep. The youngest
           snapshots will be kept.

           Default value is "50".

       NUMBER_LIMIT_IMPORTANT=number or range
           Defines how many important snapshots the number cleanup algorithm should keep.
           Important snapshots have important=yes in the userdata. The youngest important
           snapshots will be kept.

           The number of normal and important snapshots are counted independently.

           Default value is "10".

           New in version 0.1.8.

       TIMELINE_CREATE=boolean
           Defines whether hourly snapshots should be created.

           Together with the timeline cleanup algorithm this will create a collection of
           snapshots with more snapshots is the near past and less snapshots in the far past.

           Default value is "no".

       TIMELINE_CLEANUP=boolean
           Defines whether the timeline cleanup algorithm should be run for the config.

           Default value is "no".

       TIMELINE_MIN_AGE=seconds
           Minimal age for snapshots to be deleted by the timeline cleanup algorithm.

           Default value is "1800".

       TIMELINE_LIMIT_HOURLY=number or range
           Defines how many hourly snapshots the timeline cleanup algorithm should keep. An
           hourly snapshot is the first snapshot in an hour. The youngest hourly snapshots will
           be kept.

           Default value is "10".

       TIMELINE_LIMIT_DAILY=number or range
           Defines how many daily snapshots the timeline cleanup algorithm should keep. A daily
           snapshot is the first snapshot in a day. The youngest daily snapshots will be kept.

           Default value is "10".

       TIMELINE_LIMIT_WEEKLY=number or range
           Defines how many weekly snapshots the timeline cleanup algorithm should keep. A weekly
           snapshot is the first snapshot in a week. The youngest weekly snapshots will be kept.
           In compliance with ISO 8601 weeks start on Monday.

           Default value is "0".

       TIMELINE_LIMIT_MONTHLY=number or range
           Defines how many monthly snapshots the timeline cleanup algorithm should keep. A
           monthly snapshot is the first snapshot in a month. The youngest monthly snapshots will
           be kept.

           Default value is "10".

       TIMELINE_LIMIT_YEARLY=number or range
           Defines how many yearly snapshots the timeline cleanup algorithm should keep. A yearly
           snapshot is the first snapshot in a year. The youngest yearly snapshots will be kept.

           Default value is "10".

       EMPTY_PRE_POST_CLEANUP=boolean
           Defines whether the empty-pre-post cleanup algorithm should be run for the config.

           Default value is "no".

       EMPTY_PRE_POST_MIN_AGE=seconds
           Minimal age for snapshots to be deleted by the empty-pre-post cleanup algorithm.

           Default value is "1800".

TYPES

       Some of the types used for the variables deserve an explanation.

       range
           A range of numbers given as min-value-max-value, e.g. "10-20".

       qgroup
           A btrfs qgroup in the standard form level-id, e.g. "1/0".

NOTES

       The default values stated here are the values snapper uses when the entry is missing in
       the configuration file. Some are not identical to the values from the configuration file
       template.

HOMEPAGE

       http://snapper.io/

AUTHORS

       Arvin Schnell <aschnell@suse.com>

SEE ALSO

       snapper(8), snapperd(8)