Date: Fri, 12 Nov 2010 11:22:59 +0000 (UTC) From: Bruce Cran <brucec@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/share/man/man4 ada.4 src/sys/cam cam_xpt.c src/sys/cam/ata ata_da.c Message-ID: <201011121124.oACBOip8028759@repoman.freebsd.org>
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brucec 2010-11-12 11:22:59 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_8)
share/man/man4 ada.4
sys/cam cam_xpt.c
sys/cam/ata ata_da.c
Log:
SVN rev 215173 on 2010-11-12 11:22:59Z by brucec
MFC r214279:
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 following the
procedure documented in Fujitsu's MHW series product documentation under
section 1.10.1, "Recommended power-off sequence".
PR: kern/140752
Submitted by: olli
Revision Changes Path
1.1.2.5 +3 -0 src/share/man/man4/ada.4
1.2.2.18 +63 -1 src/sys/cam/ata/ata_da.c
1.217.2.29 +1 -1 src/sys/cam/cam_xpt.c
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