This file lists noteworthy changes in MooseFS.

* MooseFS 1.6.20 (2011-01-14)

 - (cs) fixed "packet too big" issue during register to master (split big register packet with all chunks info into small packets)
 - (cs,metalogger,master) added minimum socket timeout (ten seconds)
 - (mount) accepting nop packets during write (for future use)

* MooseFS 1.6.19 (2010-12-15)

 - (debian) separated mfs-common and mfs-metalogger subpackages, added init scripts (contributed by Christopher Lewis)
 - (daemon) fixed return values (return non zero on error)
 - (cs) fixed chunk testing bug (any error during chunk opening caused assigning whole disk as damaged)
 - (cs,metalogger) added resolving master name when connection failed (patch contributed by Davies Liu)
 - (mount) added creating new session when prevoius is lost (inspired by Davies Liu)
 - (cs) added for unused chunks week delay before deletion (inspired by Davies Liu)
 - (cgi) added switching between name and IP in 'path' column in 'Disks' table (inspired by Davies Liu)
 - (master) do not update ctime when goal, trashtime or extra attributes are not changing

* MooseFS 1.6.18 (2010-11-08)

 - (metalogger) added sending metadata after metalogger startup
 - (master,metalogger) added sending two change logs together with metadata
 - (metarestore) imporved merging change logs
 - (all) added a lot of assertions (mainly NULL pointers, and unsuccessful thread functions)
 - (all) fixed some minor bugs and potential race conditions (makes valgrind happy)
 - (cs) added ability to use read-only disks in "marked for removal" mode (to retrieve missing chunks from damaged disks)
 - (cs) added showing scanning progress during startup
 - (all/master) added releasing used resources at the end.
 - (all) changed some malloc/free allocations into mmap/munmap
 - (all) new error messages routines
 - (daemons) added proper handling SIGINT in "foreground" mode
 - (cgiserv) fixed small bug (malformed request could crash cgiserv)

* MooseFS 1.6.17 (2010-07-20)

 - (master,tools) added automatic data cache management
 - (master,tools) new flag "nodatacache"

* MooseFS 1.6.16 (2010-07-19)

 - (master) added clearing suid/sgid bits
 - (master) added check for "sticky" flag during rename and unlink operations
 - (master) fixed posix compatibility (removing empty directory on rename)
 - (master) fixed posix compatibility (proper changing ctime)
 - (master) fixed some constants (better support for larger systems - with millions of files and chunks)
 - (master) fixed error logging (logging is turning off when there are too many messages)
 - (all) fixed some OpenSolaris compile issues (mainly added -D__EXTENSIONS__ to compile flags)
 - (all) fixed OpenSolaris pthreads issue (errno doesn't work correctly without proper compiler flags)
 - (man) added mfscgiserv man page, added "BIND" options descriptions to man pages
 - (cs) fixed hdd stats (overflow on negative time difference)

* MooseFS 1.6.15 (2010-04-09)

 - (daemons) fixed "double free" error
 - (metarestore) fixed bugs in "REPAIR" and "SNAPSHOT" entries
 - (master) fixed bug in "snapshot" command ("mfsmakesnapshot dir dir/" caused master to hung-up)
 - (master) preserving atime and mtime during "snapshot" operation (makes "snapshot" to work more like "cp -Rp" than "cp -R")
 - (cs) ommit "marked for removal" disks during chunk test loop

* MooseFS 1.6.14 (2010-03-19)

 - (all) improved messages
 - (cs) prevent from using localhost as a master IP address
 - (all) remove some BSDisms from code
 - (metalogger) added BIND_HOST option (as in mount and cs)

* MooseFS 1.6.13 (2010-02-08)

 - (master) fixed poll events bug
 - (autotools) added m4 module for posix threads detection
 - (master) added exporting "meta" to default mfsexports.cfg
 - (master,tools) removed "allowdatacache" flag (will be managed automatically in the future)
 - (master,cs) added support for not compressed PNG images in chart module (when build without zlib)

* MooseFS 1.6.12 (2010-01-25)

 - (mount) fixed locking in read module
 - (mount,cs) added ability to bind outgoing sockets to specific IP

* MooseFS 1.6.11 (2009-12-31)

 - (cs) removed dirent.d_type test
 - (cs) fixed some memory leaks
 - (mount) improved attribute cache

* MooseFS 1.6.10 (2009-12-09)

 - fixed errors introduced in 1.6.9
 - added 'reload' command to master
 - split chunk counters into 'all' and 'regular' (new approach to disks
   removal - since this version chunks on 'marked for removal' disks are not
   deleted)

* MooseFS 1.6.9 (2009-11-24)

 - updated manpages
 - added support for mlockall (prevent from swapping)
 - redesigned charts module
 - redesigned locking mechanizm (daemons)
 - added HDD I/O stats
 - removing unfinished jobs from queue on socket close
 - added 'cache file' flag

* MooseFS 1.6.8 (2009-10-26)

 - added options to set nice level and number of I/O retries in mfsmount

* MooseFS 1.6.7 (2009-10-05)

 - fixed error: damaged disk caused SIGSEGV in mfschunkserver

* MooseFS 1.6.6 (2009-10-02)

 - fixed errors introduced in 1.6.5
 - changed directory structure in CS (from 16 subfolders to 256 subfolders)

* MooseFS 1.6.5 (2009-09-23)

 - fixed some performance issues
 - added new module "mfsmetalogger"

* MooseFS 1.6.4 (2009-08-25)

 - rewrite mfs to use poll instead of select
 - fixed some errors in new write module
 - limit cache usage by inode in write module

* MooseFS 1.6.3 (2009-08-24)

 - reduced version increasing
 - increased open files limit in chunkserver
 - decreased time window in damage disk detection

* MooseFS 1.6.2 (2009-08-19)

 - fixed "race" in writedata module
 - increased session timeout in mfsmaster for new sessions

* MooseFS 1.6.1 (2009-08-14)

 - Added 'mapall' option to exports
 - Added flags 'noattrcache' and 'noentrycache'
 - Rewritten "Writedata" module in mfsmount
 - Added source (read) limit to replications
 - Prefer localhost during some operations (reduce network usage)

* MooseFS 1.6.0 (not released - only available in public repository)

 Common:
 - Removed duplicate source files.
 - Strip whitespace at the end of configuration file lines.

 Chunkserver:
 - Rewritten in multi-threaded model.
 - Added periodical chunk testing functionality (HDD_TEST_FREQ option).
 - New -v option (prints version and exits).

 Master:
 - Added "noowner" objects flag (causes objects to belong to current user).
 - Maintaining `mfsdirinfo` data online, so it doesn't need to be calculated
   on every request.
 - Filesystem access authorization system (NFS-like mfsexports.cfg file,
   REJECT_OLD_CLIENTS option) with ro/rw, password and maproot
   functionality.
 - New -v option (prints version and exits).

 Mount:
 - Rewritten options parsing in mount-like way, making possible to use
   standard FUSE mount utilities (see mfsmount(8) manual for new syntax).
   Note: old syntax is no longer accepted and mountpoint is mandatory now
   (there is no default).
 - Updated for FUSE 2.6+.
 - Added password, file data cache, attribute cache and entry cache options.
   By default attribute cache and directory entry cache are enabled,
   file data cache and file entry cache are disabled.
 - opendir() no longer reads directory contents - it's done on first
   readdir() now; fixes "rm -r" on recent Linux/glibc/coreutils combo.
 - Fixed mtime setting just before close() (by flushing file on mtime
   change); fixes mtime preserving on "cp -p".
 - Added statistics accessible through MFSROOT/.stats pseudo-file.
 - Changed master access method for mfstools (direct .master pseudo-file
   replaced by .masterinfo redirection); fixes possible mfstools race
   condition and allows to use mfstools on read-only filesystem.

 Tools:
 - Units cleanup in values display (exact values, IEC-60027/binary prefixes,
   SI/decimal prefixes); new options: -n, -h, -H and MFSHRFORMAT environment
   variable - refer to mfstools(8) manual for details).
 - mfsrgetgoal, mfsrsetgoal, mfsrgettrashtime, mfsrsettrashtime have been
   deprecated in favour of new "-r" option for mfsgetgoal, mfssetgoal,
   mfsgettrashtime, mfssettrashtime tools.
 - mfssnapshot utility replaced by mfsappendchunks (direct descendant of
   old utility) and mfsmakesnapshot (which creates "real" recursive
   snapshots and behaves similar to "cp -r").
 - New mfsfilerepair utility, which allows partial recovery of file with
   some missing or broken chunks.

 CGI scripts:
 - First public version of CGI scripts allowing to monitor MFS installation
   from WWW browser.

* MooseFS 1.5.14

   Not released to public.

* MooseFS 1.5.13

   Not released to public.

* MooseFS 1.5.12 (2009-01-28)

 - Fixed CRC cache in chunkserver

* MooseFS 1.5.11 (2008-12-18)

 - Added CRC-block and file descriptor cache in chunkserver.
 - Removed compilation warnings on 64-bit machines.
 - Optimized chunkserver choice in mfsmount.
 - Better replication algorithm.

* MooseFS 1.5.10 (2008-12-03)

 - Fixed replication algorithm.

* MooseFS 1.5.9 (2008-11-19)

 - Improved rebalancing algorithm.
 - Protections against overriding metadata.mfs.back by older metadata.mfs.
 - Fixes to build mfstools, mfsmaster and mfsmetarestore with Large File
   Support on Linux (previously only mfsmount had LFS enabled).
 - Less verbose logging in mfsmaster.
 - Log chunkserver disconnections in mfsmaster.

* MooseFS 1.5.8 (2008-08-26)

 - Better memory allocation in Master's chunks module.
 - Syslog messages used only for debugging purposes were commented out.

* MooseFS 1.5.7 (2008-08-01)

 - Fix for stack buffer overrun (by 4 bytes) in mfsmount.

* MooseFS 1.5.6 (2008-07-25)

 - Memory allocation fix in mfsmaster.

* MooseFS 1.5.5 (2008-07-10)

 - Mounting options fix for FreeBSD in mfsmount.

* MooseFS 1.5.4 (2008-07-08)

 - Blocking rebalance replications when undergoal chunks exist.
 - Minor bugfixes.
 - Build system improvements.
 - MooseFS and mfsmount version numbers synchronized.

* MooseFS 1.5 (2008-05-30)

 - First version released as Open Source.