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mfsexports.cfg(5) This is part of MooseFS mfsexports.cfg(5)

mfsexports.cfg - MooseFS access control for mfsmounts

The file mfsexports.cfg contains MooseFS access list for mfsmount clients.

Syntax is:
Lines starting with # character are ignored as comments.
ADDRESS can be specified in several forms:
*	all addresses
n.n.n.n	single IP address
n.n.n.n/b	IP class specified by network address and number of significant bits
n.n.n.n/m.m.m.m	IP class specified by network address and mask
f.f.f.f-t.t.t.t	IP range specified by from-to addresses (inclusive)
DIRECTORY can be / or path relative to MooseFS root; special value . means MFSMETA companion filesystem.
ro, readonly
export tree in read-only mode; this is default
rw, readwrite
export tree in read-write mode
allows to mount any subdirectory of specified directory (similarly to NFS)
allows reconnecting of already authenticated client from any IP address (the default is to check IP address on reconnect)
disable testing of group access at mfsmaster level (it's still done at mfsmount level) - in this case "group" and "other" permissions are logically added; needed for supplementary groups to work ( mfsmaster receives only user primary group information)
administrative privileges - currently: allow changing of quota values and storage classes management
maps root (uid=0) accesses to given user and group (similarly to maproot option in NFS mounts); USER and GROUP can be given either as name or number; if no group is specified, USER's primary group is used. Names are resolved on mfsmaster side (see note below).
like above but maps all non privileged users (uid!=0) accesses to given user and group (see notes below).
password=PASS, md5pass=MD5
requires password authentication in order to access specified resource
rejects access from clients older than specified
mingoal=N, maxgoal=N
specify range in which goal can be set by users
mintrashtime=TDUR, maxtrashtime=TDUR
specify range in which trashtime can be set by users
Default options are: ro, maproot=999:999, mingoal=1, maxgoal=9, mintrashtime=0, maxtrashtime=4294967295.

USER and GROUP names (if not specified by explicit uid/gid number) are resolved on mfsmaster host.
TDUR can be specified as number without time unit (number of seconds) or combination of numbers with time units. Time units are: W,D,H, M,S. Order is important - less significant time units can't be defined before more significant time units. Time units are case insensitive.
Option mapall works in MooseFS in different way than in NFS, because MooseFS is using FUSE's "default_permissions" option. When mapall option is used, users see all objects with uid equal to mapped uid as their own and all other as root's objects. Similarly objects with gid equal to mapped gid are seen as objects with current user's primary group and all other objects as objects with group 0 (usually wheel). With mapall option set attribute cache in kernel is always turned off.

*                    /       ro       /       rw       /       rw,alldirs,maproot=0,password=passcode    /test   rw,maproot=nobody,password=test /public rw,mapall=1000:1000          /       rw,alldirs,maproot=0,mintrashtime=2h30m,maxtrashtime=2w

Report bugs to <>.

Copyright (C) 2018 Jakub Kruszona-Zawadzki, Core Technology Sp. z o.o.
This file is part of MooseFS.
MooseFS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2 (only).
MooseFS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with MooseFS; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02111-1301, USA or visit

mfsmaster(8), mfsmaster.cfg(5)
July 2018 MooseFS 3.0.101-1

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