K 10
svn:author
V 3
pjd
K 8
svn:date
V 27
2006-03-13T00:58:41.000000Z
K 7
svn:log
V 568
- Speed up synchronization process by using configurable number of I/O
  requests in parallel.
  + Add kern.geom.mirror.sync_requests tunable which defines how many parallel
    I/O requests should be used.
  + Retire kern.geom.mirror.reqs_per_sync and kern.geom.mirror.syncs_per_sec
    sysctls.
- Fix race between regular and synchronization requests.
- Reimplement mirror's data synchronization - do not use the topology lock
  for this purpose, as it may case deadlocks.
- Stop synchronization from pre-sync hook.
- Fix some other minor issues.

MFC after:	3 days

END