Contents
What do you need to know about mergerfs?
mergerfs is a union filesystem geared towards simplifying storage and management of files across numerous commodity storage devices. It is similar to mhddfs, unionfs, and aufs. mergerfs logically merges multiple paths together. Think a union of sets.
How to add mergerfs Mount line to fstab?
To add a mergerfs mount line to my fstab, it would be as simple as this. This would pool all mounts in /mnt/data and present them at /storage. This defaults to using lfs (least free space) mode on created files and with the minfreespace option, so my disks won’t fill past 20GB remaining.
What can I do with mergerfs.ctl tool?
1 mergerfs.ctl: A tool to make it easier to query and configure mergerfs at runtime 2 mergerfs.fsck: Provides permissions and ownership auditing and the ability to fix them 3 mergerfs.dedup: Will help identify and optionally remove duplicate files 4 mergerfs.dup: Ensure there are at least N copies of a file across the pool
Can You mount a read only file in mergerfs?
You can not mount a read-only filesystem and write to it. However, mergerfs will ignore read-only drives when creating new files so you can mix read-write and read-only drives. It also does NOT split data across drives.
How is mergerfs similar to mhddfs and aufs?
% mergerfs (1) mergerfs user manual % Antonio SJ Musumeci [email protected] % 2021-05-29 mergerfs is a union filesystem geared towards simplifying storage and management of files across numerous commodity storage devices. It is similar to mhddfs, unionfs, and aufs. mergerfs logically merges multiple paths together.
Is the union filesystem supported by mergerfs?
The file/s or directory/s acted on or presented through mergerfs are based on the policy chosen for that particular action. Read more about policies below. mergerfs does NOT support the copy-on-write (CoW) or whiteout behaviors found in aufs and overlayfs.