mogilefsd - Man Page
MogileFS tracker daemon
Usage
This is the main MogileFS daemon, mogilefsd, also called the "tracker". All interaction with a MogileFS installation begins by a client talking to a tracker (you should run several in parallel for redundancy).
See MogileFS::Client for a client library.
Architecture
Processes
The mogilefsd daemon is an event-loop in the parent process, handling with epoll/kqueue/etc (see Danga::Socket) tons of client connections, while managing a bunch of worker processes underneath.
The worker processes under mogilefsd include:
- Client query processing -- implements the MogileFS client/server protocol
See MogileFS::Worker::Query.
- Monitoring -- monitors hosts and devices
See MogileFS::Worker::Monitor.
- Replicate -- replicates files
See MogileFS::Worker::Replicate.
- Deleter -- deletes files from storage nodes (protocol deletes from namespace are immediate)
See MogileFS::Worker::Delete.
- Reaper -- re-enqueues files for replication when disks are marked dead
See MogileFS::Worker::Reaper.
- Fsck -- background filesystem consistency checker
See MogileFS::Worker::Fsck.
Data Storage
See MogileFS::Store.
Authors
Brad Fitzpatrick <brad@danga.com>
Mark Smith <junior@danga.com>
Brad Whitaker <whitaker@danga.com>
Copyright
Copyright 2004, Danga Interactive Copyright 2005-2006, Six Apart Ltd.
License
Same terms as Perl itself. Artistic/GPLv2, at your choosing.
See Also
mogstored -- MogileFS storage daemon