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

[Pawel Jakub Dawidek]

pjd         2004-11-05 09:05:15 UTC

  FreeBSD src repository

  Modified files:
    sys/geom/mirror      g_mirror.c g_mirror.h 
  Log:
  MFp4:
  - Fix for good (I hope) force-stopping mirrors and some filure cases
    (e.g. the last good component dies when synchronization is in progress).
    Don't use ->nstart/->nend consumer's fields, as this could be racy,
    because those fields are used in g_down/g_up, use ->index consumer's
    field instead for tracking number of not finished requests.
  
    Reported by:  marcel
  
  - After 5 seconds of idle time (this should be configurable) mark all
    dirty providers as clean, so when mirror is not used in 5 seconds
    and there will be power failure, no synchronization on boot is needed.
  
    Idea from:    sorry, I can't find who suggested this
  
  - When there are no ACTIVE components and no NEW components destroy whole
    mirror, not only provider.
  
  - Fix one debug to show information about I/O request, before we change
    its command.
  
  Revision  Changes    Path
  1.39      +68 -13    src/sys/geom/mirror/g_mirror.c
  1.11      +1 -0      src/sys/geom/mirror/g_mirror.h