Specfs

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On Unix-like computer systems, specfs is short for special filesystem. This is not a physical or network file system and it does not have a mount point either. It is simply an filesystem layer to access device special files, which are hosted in any of the regular filesystems.

Disk and
non-rotating

Flash memory and SSD

host-side wear leveling	CHFS JFFS JFFS2 LogFS NILFS NILFS2 YAFFS UBIFS

Distributed parallel

Specialized

Aufs AXFS Boot File System CDfs Compact Disc File System cramfs Davfs2 EROFS FTPFS FUSE Lnfs LTFS NOVA MVFS SquashFS UMSDOS OverlayFS UnionFS
Pseudo	configfs devfs debugfs kernfs procfs specfs sysfs tmpfs WinFS
Encrypted	eCryptfs EncFS EFS Rubberhose SSHFS ZFS

Types

Features

Case preservation Copy-on-write Data deduplication Data scrubbing Execute in place Extent File attribute Extended file attributes File change log Fork Links Hard Symbolic
Access control	Access-control list Filesystem-level encryption Permissions Modes Sticky bit

Layouts

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