Filesystems

Cache

Cache-FS

• Mainly for caching NFS mounts.
• RedHat documentation.

Centralized

NFS

Use nfsnobody user and group for folders that should be accessed by root users on client systems (including docker).

• NFS Volume Security
• Do Not Use the no_root_squash Option

ZFS

Advantages of ZFS:

• Transactional file system: always consistent on disk
• Provable data integrity
• Snapshots
• Mirroring

See also:

• ZFS: The Last Word In File Systems
• ZFS send to external backup drive
• Shrinking a ZFS root pool
• HowTo Create Striped Mirror Vdev ZPool
• Create a ZFS volume on Ubuntu
• ZFS and Ubuntu Home Server howto
• Why RAID 5 stops working in 2009
• ZFS: You should use mirror vdevs, not RAIDZ
• ZFS Datasets dissappear on reboot

Other

• zram — Create compressed block device in RAM.

Distributed

Ceph

• Started off as an "object store".
• Common in OpenStack deployments.

Gluster

https://www.gluster.org/

• Share-nothing architecture.
• Under active development (was bought by Red Hat).
• Uses nfs-ganesha to create (or proxy) an NFS server in user space.

Magic Pocket

Proprietary system used at Drop Box.

MapR-FS

• Part of the Converged Data Platform

SeaweedFS

https://github.com/chrislusf/seaweedfs

A simple and highly scalable distributed file system. There are two objectives: to store billions of files! to serve the files fast! Instead of supporting full POSIX file system semantics, SeaweedFS choose to implement only a key~file mapping. Similar to the word "NoSQL", you can call it as "NoFS".