master: sbin/hammer/cmd_cleanup.c sbin/hammer/hammer.8 sbin/hammer/hammer.c sbin/newfs_hammer/newfs_hammer.c sys/vfs/hammer/hammer.h sys/vfs/hammer/hammer_blockmap.c sys/vfs/hammer/hammer_disk.h sys/vfs/hammer/hammer_inode.c sys/vfs/hammer/hammer_object.c sys/vfs/hammer/hammer_subs.c sys/vfs/hammer/hammer_vfsops.c sys/vfs/hammer/hammer_vnops.c 5e435c92464bba65df27315ea1e25ab06939ddad

[Matthew Dillon]

commit 5e435c92464bba65df27315ea1e25ab06939ddad
Author: Matthew Dillon <dillon at apollo.backplane.com>
Date:   Tue Dec 2 18:11:43 2008 -0800

    HAMMER Filesystem changes:
    
    * Add version checking to the hammer mount code.
    
    * Add ioctls to fetch the hammer filesystem version and to upgrade it,
      to support future filesystem revisions.
    
    * Rewrite the algorithm used to integrate reservations with the blockmap
      allocate/free code to fix a bug.  hammer_buffers were sometimes not
      being properly destroyed causing conflicts with later reallocations.
    
    * Add support for up to four directory hash algorithms.  Add flexibility
      to the namekey iterator API to allow the algorithm to control the
      iteration space.
    
    * When iterating memory with the CURSOR_DELETE_VISIBILITY flag set, ignore
      the record deleted flags.
    
    HAMMER Utilities changes:
    
    * Add two new hammer directives, 'version' and 'version-upgrade'.
    
    * Change hammer namekey directive to 'namekey1' and 'namekey2', to support
      generating directory hashes for different hashing algorithms.
    
    * Change hammer cleanup to still prune for existing snapshots even if
      new snapshot generation is disabled.
    
    * Change hammer cleanup's default snapshots config for temporary
      filesystems from 'snapshots 0d 60d' to 'snapshots 0d 0d'.
    
    Reported-by: "Justin C. Sherrill" <justin at shiningsilence.com> (blockmap bug)

Summary of changes:
 sbin/hammer/cmd_cleanup.c        |   89 ++++++++++++------
 sbin/hammer/hammer.8             |   35 ++++++--
 sbin/hammer/hammer.c             |   46 +++++++++-
 sbin/newfs_hammer/newfs_hammer.c |    2 +-
 sys/vfs/hammer/hammer.h          |    9 +-
 sys/vfs/hammer/hammer_blockmap.c |  188 +++++++++++++++++--------------------
 sys/vfs/hammer/hammer_disk.h     |   11 ++
 sys/vfs/hammer/hammer_inode.c    |   10 ++
 sys/vfs/hammer/hammer_object.c   |   40 +++++---
 sys/vfs/hammer/hammer_subs.c     |   92 +++++++++++++++++--
 sys/vfs/hammer/hammer_vfsops.c   |    1 -
 sys/vfs/hammer/hammer_vnops.c    |   18 +++-
 12 files changed, 363 insertions(+), 178 deletions(-)

http://gitweb.dragonflybsd.org/?p=dragonfly.git;a=commitdiff;h=5e435c92464bba65df27315ea1e25ab06939ddad

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