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diff --git a/network/lizardfs/README b/network/lizardfs/README new file mode 100644 index 0000000000..6b6c8d0b12 --- /dev/null +++ b/network/lizardfs/README @@ -0,0 +1,55 @@ +LizardFS is a highly scalable, fault-tolerant, POSIX-compatible, FUSE-based, +high performance distributed filesystem, licensed under GNU General Public +License version 3. + +LizardFS is an implementation of GoogleFS, and a fork of the earlier project, +MooseFS. LizardFS supports writable snapshots (instant copies), undeleting +files, automatic data rebalancing, self-healing, data tiering, periodic data +patrols and many more. + +LizardFS system consists of a master server, one or more metadata logging +servers (meta loggers), and many chunk servers, that store the data on their +locally-attached drives. Both meta loggers and chunk servers can be added and +removed without restarting the master server. + +Filesystem metadata is stored on the master server (and constantly replicated +to meta loggers), whereas filesystem data is divided into chunks and spread as +files over chunk servers, according to pre-defined 'goals', which can be set +on file-, directory-, or filesystem level. A goal can be an n-way mirroring +goal, n+1 xor-ed goal (each chunk divided into n parts and xor-ed to calculate +one part of redundancy), or more sophisticated, erasure code based n+k +redundancy, where n parts of each chunk are backed by k parts of redundancy +data. + +A set of administrative commands exists to support querying and setting +redundancy goals and trash preservation time. LizardFS is admin-friendly since +any missing chunks can be provided from any sort of backup to any running +chunk server. + +This package contains all binaries needed to run LizardFS system: mfsmaster, +mfsmetalogger, mfschunkserver, as well as lizardfs-cgiserver (web-based +monitoring console). + +You need an "mfs" user and group prior to building lizardfs. Something like +this will suffice for most systems: + groupadd -g 353 mfs + useradd -u 353 -g 353 -d /var/lib/mfs mfs +Feel free to use a different uid and gid if desired, but 353 is recommended to +avoid conflicts with other stuff from SlackBuilds.org. + +It is also advisable to make name 'mfsmaster' pointing at your Master server +across your network. It is not strictly required, but it will make things much +easier. If you are unable to configure your DNS server, adding this line to +/etc/hosts on each master, metalogger, chunkserver, and client machines will +do: + +a.b.c.d mfsmaster mfsmaster.my-domain.ext + +where a.b.c.d is an IP address of your master server. + +Then on each node add '/etc/rc.d/rc.lizardfs start' to /etc/rc.d/rc.local (or +wherever you find appropriate), and use '/etc/rc.d/rc.lizardfs setup' to +configure which services should run on the server. Since most installations +consists mostly of chunkservers, rc.lizardfs-chunkserver is marked executable +by default (but will not run until rc.lizardfs-chunkserver or rc.lizardfs is +added to rc.local, so no need to worry). |