On Sunday 24 October 2010 17:31:58 Bruce Cran wrote: > Log: > 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.
The FLUSH CACHE + STANDBY IMMEDIATE commands are issued (instead of just SLEEP) following the procedure documented in Fujitsu's MHW series product documentation under section 1.10.1, "Recommended power-off sequence". -- Bruce Cran _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
