freebsd-nq/lib
George Wilson f3a7f6610f Illumos 4976-4984 - metaslab improvements
4976 zfs should only avoid writing to a failing non-redundant top-level vdev
4978 ztest fails in get_metaslab_refcount()
4979 extend free space histogram to device and pool
4980 metaslabs should have a fragmentation metric
4981 remove fragmented ops vector from block allocator
4982 space_map object should proactively upgrade when feature is enabled
4983 need to collect metaslab information via mdb
4984 device selection should use fragmentation metric
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Adam Leventhal <adam.leventhal@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Approved by: Garrett D'Amore <garrett@damore.org>

References:
  https://www.illumos.org/issues/4976
  https://www.illumos.org/issues/4978
  https://www.illumos.org/issues/4979
  https://www.illumos.org/issues/4980
  https://www.illumos.org/issues/4981
  https://www.illumos.org/issues/4982
  https://www.illumos.org/issues/4983
  https://www.illumos.org/issues/4984
  https://github.com/illumos/illumos-gate/commit/2e4c998

Notes:
    The "zdb -M" option has been re-tasked to display the new metaslab
    fragmentation metric and the new "zdb -I" option is used to control
    the maximum number of in-flight I/Os.

    The new fragmentation metric is derived from the space map histogram
    which has been rolled up to the vdev and pool level and is presented
    to the user via "zpool list".

    Add a number of module parameters related to the new metaslab weighting
    logic.

Ported by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2595
2014-08-18 08:40:49 -07:00
..
libavl Remove autotools products 2012-08-27 11:47:44 -07:00
libefi Improve partition detection on lesser used devices 2014-04-08 14:45:12 -07:00
libnvpair Illumos #2619 and #2747 2013-01-08 10:35:35 -08:00
libshare Remove unconditional sharetab update 2014-01-07 09:48:09 -08:00
libspl Avoid PAGESIZE redefinition 2014-08-13 10:36:09 -07:00
libunicode Remove autotools products 2012-08-27 11:47:44 -07:00
libuutil Remove autotools products 2012-08-27 11:47:44 -07:00
libzfs Illumos 4976-4984 - metaslab improvements 2014-08-18 08:40:49 -07:00
libzfs_core Illumos 4757, 4913 2014-08-01 14:28:05 -07:00
libzpool Illumos 4757, 4913 2014-08-01 14:28:05 -07:00
Makefile.am Illumos #2882, #2883, #2900 2013-09-04 15:49:00 -07:00