lizardfs man page

lizardfs, moosefs, mfs — a networking, distributed, highly available file system

Description

LizardFS is a networking, highly available, distributed file system. It spreads data over several physical localisations (servers), which are visible to a user as one resource. For standard file operations LizardFS acts as other Unix-alike file systems. It has hierarchical structure (directory tree), stores files' attributes (permissions, last access and modification times) as well as makes it possible to create special files (block and character devices, pipes and sockets), symbolic links (file names pointing to another files accessible locally, not necessarily on LizardFS) and hard links (different names of files which refer to the same data on LizardFS). Access to the file system can be limited basing on IP address and/or password.

Distinctive features of LizardFS are:

Architecture

LizardFS installation consists of five types of machines:

Metadata is stored in memory of the managing server and simultaneously is being saved on disk (as a periodically updated binary file and immediately updated incremental logs). The main binary file as well as the logs are replicated to metaloggers (if present).

File data is divided to fragments (chunks) of maximum size 64MB each which are stored as files on selected disks on data servers (chunkservers). Each chunk is saved on different computers in a number of copies equal to a "goal" for the given file.

Reporting Bugs

Report bugs to <contact@lizardfs.org>.

See Also

mfschunkserver(8), mfsmaster(8), mfsmetalogger(8), mfsmount(1), mfstools(1), lizardfs-admin(8)

Referenced By

lizardfs(1), lizardfs-cgiserver(8), mfscgiserv(8), mfschunkserver(8), mfsmaster(8), mfsmetalogger(8), mfsmetarestore(8), mfsmount(1), mfsmount.cfg(5).

The man pages mfs(7) and moosefs(7) are aliases of lizardfs(7).

08/27/2017