FileSystems

Overview

This is a page of filesystems I find interesting, most of which involve mounting files on remote machines.

ssh

mounting filesystems locally with only an ssh logon to the remote server.

• FUSE module SSHFS
  • implement a filesystem in a userspace program
• KIO
  • for KDE, limited access by non-kde apps.
  • modular system for mounting remote filesystems
  • ssh, ftp, imap, etc.

• LUFS - Linux Userspace FileSystem

• SHFS - linux kernel module
  • http://shfs.sourceforge.net/

NFS

• http://nfs.sourceforge.net/
• network filesystem
• very fast, efficient, mature

SFS

• http://www.fs.net/sfswww/
• Self-certifying File System
• built on top of NFS

SFS is a secure, global network file system with completely decentralized control. SFS lets you access your files from anywhere and share them with anyone, anywhere. Anyone can set up an SFS server, and any user can access any server from any client. SFS lets you share files across administrative realms without involving administrators or certification authorities.

Samba

• see Samba
• windows compatibility

FreeBSD

• GEOM - Disk abstraction layer

Andrew Filesystem

• http://www.openafs.org/
• OpenAFS
• works on OS X
• FreeBSD client - http://www.stacken.kth.se/project/arla/

Coda Filesystem

• see Coda

Global File System

• http://www.redhat.com/software/rha/gfs/
• cluster filesystem
• allows a cluster of Linux servers to share data in a common pool of storage
• requires hardware support in addition to the file system software?
• http://sourceforge.net/projects/gfs4fbsd - effort to port to freebsd - planning phase

DRBD

• http://www.drbd.org/

DRBD is a block device which is designed to build high availability clusters. This is done by mirroring a whole block device via (a dedicated) network. You could see it as a network raid-1.

Non-network filesystems

memory filesystem

Create a 100 megabyte filesystem in /mnt. This filesystem will remain until you unmount it by typing the umount /mnt command, or until you reboot.

    mount_mfs -s 200000 /mnt

nullfs

    sudo mount_nullfs /actual/path /some/other/path

ufs and ufs2

• http://sixshooter.v6.thrupoint.net/jeroen/faq.html - Little UFS2 FAQ

ReiserFS

• ReiserFS