REDROOM

Navigation

Breadcrumbs

Create

Edit File Size: 1.20 KB

//usr/share/doc/sg3-utils/README.sg_start

Text Base64

Hi,

you can use sg_start to start (spin-up, 1) and stop (spin-down, 0) devices.
I also offers a parameter (-s) to send a synchronize cache command to a
device, so it should write back its internal buffers to the medium.

Be aware that the Linux SCSI subsystem at this time does not automatically
starts stopped devices, so stopping a device which is in use may have fatal
results for you.

So, you should apply with care.
I use it in my shutdown script at the end (before the poweroff command):

# SG_SHUG_NOS is set in my config file rc.config
# SG_SHUT_NOS="0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15"
if test -x /bin/sg_start; then
    if test "`basename $command`" = "reboot"; then
        for no in $SG_SHUT_NOS;
	      do /bin/sg_start /dev/sg$no -s >/dev/null 2>&1;
	 done
    else
        for no in $SG_SHUT_NOS;
	    do /bin/sg_start /dev/sg$no -s 0 >/dev/null 2>&1;
        done
    fi
fi

Enjoy!
					Kurt Garloff <garloff at suse dot de>

Postscript
==========
sg_start has been reworked to allow a block device (e.g. /dev/sda) in
addition to the sg device name (e.g. /dev/sg0) in the lk 2.6 series.
sg_start now has more command line options, see its man page.

Douglas Gilbert <dgilbert at interlog dot com> 2004/5/8

Exit & Reset Text mode: syntax highlighting auto-detects file type.

Name	Size	Perms	Modified	Actions
examples DIR	-	drwxr-xr-x	2026-01-08 12:55:53	Edit Download recursive recursive
AUTHORS	114 B	lrw-r--r--	2007-07-14 00:42:29	Edit Download recursive recursive
changelog.Debian.gz	1.17 KB	lrw-r--r--	2024-04-08 16:19:15	Edit Download recursive recursive
copyright	2.74 KB	lrw-r--r--	2023-09-05 19:36:14	Edit Download recursive recursive
COVERAGE.gz	2.56 KB	lrw-r--r--	2021-01-31 23:48:11	Edit Download recursive recursive
CREDITS.gz	2.73 KB	lrw-r--r--	2020-01-25 12:58:12	Edit Download recursive recursive
README.freebsd.gz	2.20 KB	lrw-r--r--	2021-03-28 00:58:36	Edit Download recursive recursive
README.gz	10.92 KB	lrw-r--r--	2020-06-05 16:19:48	Edit Download recursive recursive
README.iscsi	1.27 KB	lrw-r--r--	2011-12-17 02:11:10	Edit Download recursive recursive
README.sg_start	1.20 KB	lrw-r--r--	2020-07-17 03:50:13	Edit Download recursive recursive
README.solaris.gz	2.52 KB	lrw-r--r--	2020-06-05 16:19:48	Edit Download recursive recursive
README.tru64	2.77 KB	lrw-r--r--	2013-01-18 00:51:54	Edit Download recursive recursive
README.win32.gz	4.15 KB	lrw-r--r--	2020-06-05 16:19:48	Edit Download recursive recursive

Directory Contents