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From: Bruce Cran <brucec@FreeBSD.org>
Date: Sun, 24 Oct 2010 16:31:57 +0000 (UTC)
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Subject: cvs commit: src/share/man/man4 ada.4 src/sys/cam cam_xpt.c
 src/sys/cam/ata ata_da.c src/sys/kern kern_shutdown.c
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brucec      2010-10-24 16:31:57 UTC

  FreeBSD src repository

  Modified files:
    share/man/man4       ada.4 
    sys/cam              cam_xpt.c 
    sys/cam/ata          ata_da.c 
    sys/kern             kern_shutdown.c 
  Log:
  SVN rev 214279 on 2010-10-24 16:31:57Z by brucec
  
  Mostly revert r203420, and add similar functionality into ada(4) since the
  existing code caused problems with some SCSI controllers.
  
  A new sysctl kern.cam.ada.spindown_shutdown has been added that controls
  whether or not to spin-down disks when shutting down.
  Spinning down the disks unloads/parks the heads - this is
  much better than removing power when the disk is still
  spinning because otherwise an Emergency Unload occurs which may cause damage
  to the actuator.
  
  PR:     kern/140752
  Submitted by:   olli
  Reviewed by:    arundel
  Discussed with: mav
  MFC after:      2 weeks
  
  Revision  Changes    Path
  1.4       +3 -0      src/share/man/man4/ada.4
  1.21      +63 -1     src/sys/cam/ata/ata_da.c
  1.254     +0 -93     src/sys/cam/cam_xpt.c
  1.208     +1 -1      src/sys/kern/kern_shutdown.c