1MFSCHUNKSERVER(8)                                            MFSCHUNKSERVER(8)
2
3
4

NAME

6       mfschunkserver - start, restart or stop Lizard File System chunkserver
7       process
8

SYNOPSIS

10       mfschunkserver [-f] [-c CFGFILE] [-u] [-d] [-t LOCKTIMEOUT] [ACTION]
11
12       mfschunkserver -s [-c CFGFILE]
13
14       mfschunkserver -v
15
16       mfschunkserver -h
17

DESCRIPTION

19       mfschunkserver is the data server of Lizard File System. Depending on
20       parameters it can start, restart or stop LizardFS chunkserver process.
21       Without any options it starts LizardFS chunkserver, killing previously
22       run process if lock file exists.
23
24       SIGHUP (or reload ACTION) forces mfschunkserver to reload all
25       configuration files.
26
27       Chunkserver periodically tests stored chunks (see HDD_TEST_FREQ option
28       in mfschunkserver.cfg manual).
29
30       LizardFS master doesn’t send metadata change logs to chunkserver and
31       expect at least one mfsmetalogger daemon to connect.
32
33       Chunkserver scans attached disks in background.
34

OPTIONS

36       -v
37           print version information and exit
38
39       -h
40           print usage information and exit
41
42       -f
43           (deprecated, use start action instead) forcily run LizardFS
44           chunkserver process, without trying to kill previous instance (this
45           option allows to run LizardFS chunkserver if stale PID file exists)
46
47       -s
48           (deprecated, use stop action instead) stop LizardFS chunkserver
49           process
50
51       -c CFGFILE
52           specify alternative path of configuration file (default is
53           mfschunkserver.cfg in system configuration directory)
54
55       -u
56           log undefined configuration values (when default is assumed)
57
58       -d
59           run in foreground, don’t daemonize
60
61       -t LOCKTIMEOUT
62           how long to wait for lockfile (default is 60 seconds)
63
64       ACTION is the one of start, stop, restart, reload, test, isalive or
65       kill. Default action is restart.
66

FILES

68       mfschunkserver.cfg
69           configuration file for LizardFS chunkserver process; refer to
70           mfschunkserver.cfg(5) manual for defails
71
72       mfshdd.cfg
73           list of directories (mountpoints) used for LizardFS storage (one
74           per line; directory prefixed by * character causes given directory
75           to be freed by replicating all data already stored there to another
76           locations)
77
78       mfschunkserver.lock
79           PID file of running LizardFS chunkserver process
80
81       .mfschunkserver.lock
82           lock file of running LizardFS chunkserver process (created in data
83           directory)
84
85       data.csstats
86           Chunkserver charts state
87

REPORTING BUGS

89       Report bugs to <contact@lizardfs.org>.
90

92       Copyright 2008-2009 Gemius SA, 2013-2015 Skytechnology sp. z o.o.
93
94       LizardFS is free software: you can redistribute it and/or modify it
95       under the terms of the GNU General Public License as published by the
96       Free Software Foundation, version 3.
97
98       LizardFS is distributed in the hope that it will be useful, but WITHOUT
99       ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
100       FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
101       for more details.
102
103       You should have received a copy of the GNU General Public License along
104       with LizardFS. If not, see http://www.gnu.org/licenses/.
105

SEE ALSO

107       mfsmaster(8), mfsmount(1), mfschunkserver.cfg(5), mfshdd.cfg(5),
108       moosefs(7)
109
110
111
112                                  01/29/2020                 MFSCHUNKSERVER(8)
Impressum