cvs commit: src/sys/geom/mirror g_mirror.c g_mirror.h g_mirror_ctl.c

[Pawel Jakub Dawidek]

pjd         2006-03-13 00:58:41 UTC

  FreeBSD src repository

  Modified files:
    sys/geom/mirror      g_mirror.c g_mirror.h g_mirror_ctl.c 
  Log:
  - 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
  
  Revision  Changes    Path
  1.76      +476 -220  src/sys/geom/mirror/g_mirror.c
  1.21      +14 -5     src/sys/geom/mirror/g_mirror.h
  1.14      +69 -49    src/sys/geom/mirror/g_mirror_ctl.c