moosefs即将发布新的版本moosefs-1.6,一下内容为其官方网站发布的新特性描述。
 
The key new features/changes of MooseFS 1.6 would include:
  • General:
    • 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
热烈期待正式版发布
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