Directory - `dir`#

While this backend is fully functional, it’s also much slower than all the others due to it having to unpack images or do instant copies of instances, snapshots and images.
Quotas are supported with the directory backend when running on either ext4 or XFS with project quotas enabled at the filesystem level.

Storage pool configuration#

Key	Type	Default	Description
rsync.bwlimit	string	0 (no limit)	Specifies the upper limit to be placed on the socket I/O whenever rsync has to be used to transfer storage entities
rsync.compression	bool	true	Whether to use compression while migrating storage pools
source	string	-	Path to block device or loop file or filesystem entry

Key	Type	Condition	Default	Description
security.shifted	bool	custom volume	false	Enable id shifting overlay (allows attach by multiple isolated instances)
security.unmapped	bool	custom volume	false	Disable id mapping for the volume
size	string	appropriate driver	same as volume.size	Size of the storage volume
snapshots.expiry	string	custom volume	-	Controls when snapshots are to be deleted (expects expression like `1M 2H 3d 4w 5m 6y`)
snapshots.pattern	string	custom volume	snap%d	Pongo2 template string which represents the snapshot name (used for scheduled snapshots and unnamed snapshots)
snapshots.schedule	string	custom volume	-	Cron expression (`<minute> <hour> <dom> <month> <dow>`), or a comma separated list of schedule aliases (`@hourly`, `@daily`, `@midnight`, `@weekly`, `@monthly`, `@annually`, `@yearly`)