git: cluster - Major kernel component work (diskiocom, xdisk, kdmsg)

[Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxxxxx>]

commit 8d6d37b8ec43578679de9fefdfc9fd5fea549925
Author: Matthew Dillon <dillon@apollo.backplane.com>
Date:   Sun Dec 2 21:40:13 2012 -0800

    cluster - Major kernel component work (diskiocom, xdisk, kdmsg)
    
    * Major implementation and stabilization work.  Fix lots of bugs,
      improve the AUTO flags and APIs.
    
    * xdisk and diskiocom are now operational for the first time.
    
      xdisk is a consumer of remote block devices.  You pass it one end of
      a pipe and use an ioctl to create /dev/xa* devices.  The kernel's
      nominal disk management subsystem handles /dev/serno/* and will also
      probe the /dev/xa* devices to create the slices.
    
      diskiocom is a block device service.  An ioctl is used to connect a
      raw disk device to the network via a pipe.
    
    * The hammer2 service demon ties the two together over the network.
    
    * Initial testing with a local hammer2 service daemon looping da0 to xa0
      succeeded, ~46MB/sec unoptimized using dd.

Summary of changes:
 lib/libdmsg/msg.c          |    9 +-
 lib/libdmsg/msg_lnk.c      |   11 +-
 lib/libdmsg/service.c      |    6 +-
 sbin/hammer2/cmd_debug.c   |    2 +
 sbin/hammer2/cmd_service.c |    1 +
 sys/dev/disk/xdisk/xdisk.c |  140 ++++++----
 sys/kern/kern_dmsg.c       |  671 ++++++++++++++++++++++++++++++++------------
 sys/kern/subr_diskiocom.c  |  462 +++++++++++++++++++++++++++++-
 sys/sys/dmsg.h             |   74 ++++--
 9 files changed, 1092 insertions(+), 284 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/8d6d37b8ec43578679de9fefdfc9fd5fea549925


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