mogilefsd (1) Linux Manual Page
mogilefsd — 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.
- Checker/Fsck — background filesystem consistency checker
- See MogileFS::Worker::Checker.
Data Storage
See MogileFS::Store.Authors
Brad Fitzpatrick <brad [at] danga.com>Mark Smith <junior [at] danga.com>
Brad Whitaker <whitaker [at] danga.com>
Copyright
Copyright 2004, Danga Interactive
Copyright 2005-2006, Six Apart Ltd.