mfsmetadump(8) This is part of MooseFS mfsmetadump(8) NAME mfsmetadump - dump MooseFS metadata info in human readable format SYNOPSIS mfsmetadump [-d] [-s section_name] metadata_file DESCRIPTION mfsmetadump dumps MooseFS metadata info in human readable format. Output consists of several sections with different types of information. Every section consist of header data - rows starting with hash (#) sign - and content data (may be empty). OPTIONS -d - replace all non-printable characters (codes < 32 and > 126) with '.' (it was default behaviour in version < 3.0.110). -s - dump only specified section of the file. Possible sections: HEAD - header info SESS - client sessions LABS - labels (not used) SCLA - storage classes NODE - tree nodes (i-nodes) EDGE - tree edges (file names) FREE - free nodes (deleted i-nodes) QUOT - quota definitions XATR - xattr data PACL - posix acl data OPEN - open files FLCK - flock data PLCK - posix locks (lockf,ioctl) data CSDB - active chunkservers CHNK - chunks SECTION HEADER (precedes each section except HEAD) section header section header (section type + version) length length of section section type name of section version hexadecimal representation of section version FILE HEADER (HEAD) header MooseFS version version metadata file version fileid metadata file id SESSIONS SECTION (SESS) nextsessionid first free session id statscount number of stats remembered in each session SESSION line describing a single session s session id e exports checksum p IP address r root inode number f session flags u umask g min and max goal (redundancy level) t min and max trash retention m maproot uid,gid and mapall uid,gid x disabled operations d disconnection time (optional) c current hour stats data l last hour stats data i session name (usually local mount point) STORAGE CLASS SECTION (SCLA), formerly LABELS SECTION (LABS) LABELDESC line with label description (existed only in LABS) l label letter n label description SCLASS (formerly LABELSET) line with storage class used in system # storage class id x admin only m mode d arch delay c create labels k keep labels a archive labels n name NODES SECTION (NODE) maxinode maximum inode number used by system hashelements number of inodes in hash tabble NODE line with node (inode) description k node type (-,D,S,F,B,C,L,T,R) - file D directory S socket F fifo B block device C character device L symbolic link T trash file R sustained file (removed open file) i inode number # storage class id e flags (extra mfs attributes) w windows attributes m mode u uid g gid a,m,c atime, mtime, ctime t trash retention d rdevhi,rdevlo (only block and character devices) p path (only symbolic links) l file length (only files) c chunk list (only files) r sessions that have this file open (only files) EDGES SECTION (EDGE) nextedgeid next available edge id (descending) EDGE line with edge description p parent inode number c child inode number i edge id n edge name FREE NODES SECTION (FREE) free nodes number of free (reusable) nodes FREEID line with free inode description i inode number f deletion timestamp QUOTA SECTION (QUOT) quota nodes number of nodes with quota QUOTA line with quota description i inode number g grace period e exceeded f flags s soft quota exceeded timestamp si soft inode quota hi hard inode quota sl soft length quota hl hard length quota ss soft size quota hs hard size quota sr soft real size quota hr hard real size quota XATTR SECTION (XATR) XATTR line with xattr description i inode number n xattr name v xattr value POSIX ACL SECTION (PACL) POSIXACL line with acl description i inode number t acl type u user (file owner) permissions g group permissions o other permissions m permission mask n named permissions - list of objects: u(U):P permissions P for user with uid U g(G):P permissions P for group with gid G OPEN FILES SECTION (OPEN) OPENFILE line with open file description s session id i inode number FLOCK LOCK SECTION (FLCK) FLOCK line with flock-lock description i inode number s session id o lock owner (FUSE lock owner) t lock type ('R' - shared lock, 'W' - exclusive lock) POSIX LOCK SECTION (PLCK) POSIXLOCK line with posix-lock description i inode number s session id o lock owner (FUSE lock owner) p local process id (owner pid) r lock range in format . COPYRIGHT 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 SEE ALSO mfsmaster(8) MooseFS 3.0.117-1 February 2023 mfsmetadump(8)