mfseattr - MooseFS extra attributes management tools

       Copyright (C) 2023 Jakub Kruszona-Zawadzki, Saglabs SA

       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
       http://www.gnu.org/licenses/gpl-2.0.html

       These tools are used to get, set or delete some extra attributes (flags).

       Attributes:

       noowner This flag means, that particular object belongs to current user (uid and gid are equal to uid and
       gid values of accessing process). Only root (uid=0) sees the real uid and gid.

       noattrcache This flag means, that standard file attributes such as uid, gid, mode, length and so on won't
       be  stored  in  kernel  cache.  In MooseFS 1.5 this was the only behaviour, and mfsmount always prevented
       attributes from being stored in kernel cache, but in MooseFS 1.6 attributes can be  cached,  so  in  very
       rare occasions it could be useful to turn it off.

       noentrycache This flag is similar to above. It prevents directory entries from being cached in kernel.

       nodatacache This flag means, that data cache should be cleared every time a file is opened.

       snapshot This flag means that the object was created via a mfsmakesnapshot command

       undeletable This flag prevents unlinking (admin only; not inherited)

       appendonly  Object  with  this  flag  can  only be appended to, unlinking and other modifications are not
       allowed (admin only; not inherited)

       immutable This flag prevents any change to given object (admin only; not inherited)

       Most of mfstools use -n, -h, -H, -k, -m and -g 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 etc.). -k, -m and -g 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 or h (binary  prefixes),  2  or  H  (SI
       prefixes),  3  or  h+  (exact  numbers and binary prefixes), 4 or H+ (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 option.

       mfseattr - MooseFS extra attributes management tools

       Report bugs to <bugs@moosefs.com>.

mfsmount(8), mfstools(1), mfssnapshots(1)

MooseFS 3.0.117-1                                 February 2023                                      mfseattr(1)

mfsgeteattr [-r] [-n|-h|-H|-k|-m|-g] OBJECT...

       mfsseteattr [-r] [-n|-h|-H|-k|-m|-g] -fATTRNAME [-fATTRNAME ...] OBJECT...

       mfsdeleattr [-r] [-n|-h|-H|-k|-m|-g] -fATTRNAME [-fATTRNAME ...] OBJECT...

       mfscopyeattr [-r] [-n|-h|-H|-k|-m|-g] SOURCE_OBJECTOBJECT...