mfsgoal - MooseFS
goal management tools
These tools operate on object's goal
value, i.e. the number of copies in
which all file data are stored. It means that file should survive failure of
one less chunkservers than its goal
must be set
between 1 and 9 (note that 1 is strongly unadvised).
prints current goal
value of given object(s). -r
option enables recursive mode, which works as usual for every given file, but
for every given directory additionally prints current goal
value of all
contained objects (files and directories).
changes current goal
value of given object(s). If new
value is specified in N+
value is increased to
for objects with lower goal
value and unchanged for the rest.
Similarly, if new value is specified as N-
decreased to N
for objects with higher goal
value and unchanged
for the rest. -r
option enables recursive mode. These tools can be used
on any file, directory or deleted ( trash
tool can be used to copy goal
value from one object to
are deprecated aliases for
and mfssetgoal -r
Since version 3.0 of MooseFS goal has been extended to storage classes. Using
storage classes user can also specify chunkservers on which copies should be
stored by defining label expresions. To maintain compatibility with standard
goal semantics, there are predefined storage classes from 1 to 9. Goal tools
simply work only on these classes. To achieve more sophisticated storage
scenarios use sclass tools ( mfsgetsclass
Most of mfstools
options to select format of printed numbers. -n
causes to print exact numbers, -h
uses binary prefixes (Ki, Mi, Gi as
2^10, 2^20 etc.) while -H
uses SI prefixes (k, M, G as 10^3, 10^6
show plain numbers respectivaly in
kibis (binary kilo - 1024), mebis (binary mega - 1024^2) and gibis (binary
giga - 1024^3). The same can be achieved by setting MFSHRFORMAT
environment variable to: 0
(exact numbers), 1
(binary prefixes), 2
(SI prefixes), 3
(exact numbers and binary prefixes), 4
(exact numbers and
SI prefixes). The default is to print just exact numbers.
When new object is created in MooseFS, attributes such as storage class,
trashtime and extra attributes are inherited from parent directory. So if you
set i.e. "noowner" attribute and storage class to
"important" in a directory then every new object created in this
directory will have storage class set to "important" and
"noowner" flag set. A newly created object inherits always the
current set of its parent's attributes. Changing a directory attribute does
not affect its already created children. To change an attribute for a
directory and all of its children use -r
Report bugs to <email@example.com>.
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