pjd 11cbb2f275 - 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
2006-03-13 00:58:41 +00:00
..
2005-11-30 19:07:28 +00:00
2006-02-01 12:06:01 +00:00
2006-02-01 12:06:01 +00:00
2006-02-01 12:06:01 +00:00
2006-02-01 12:06:01 +00:00
2006-02-01 12:06:01 +00:00
2006-02-01 12:06:01 +00:00
2005-03-18 06:57:58 +00:00
2005-11-25 10:09:30 +00:00
2005-02-10 12:10:35 +00:00
2005-09-03 11:03:10 +00:00