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Re: Starting/Stopping SCSI HD's


Thanks for the quick reply, but unfortuately, no luck.  I have done
"hdparm -h" and "man hdparm" (I already had it, it seems), but very many
of the features of hdparm (including all that seem to be relevant to
starting/stopping/putting to sleep hard disks) are for IDE disks
ONLY.  These are "hdparm -y, hdparm -Y, hdparm -s, [/dev/sdb]" as far as I
know, and when I try them, I get "operation not supported on SCSI disks"


Simon Hales

On Fri, 28 Jul 2000, C. Falconer wrote:

> hdparm can do this....  I have memories of it being mentioned earlier....
> try as root
>      apt-get install hdparm
> to get it faster than using dselect.
> At 05:05 AM 7/28/00 +0100, you wrote:
> >Hi
> >
> >I have a Debian "Slink" 486DX4-100, with 1Gb IDE and 2GB SCSI II hard
> >disks (hda and sda) partitioned and mounted on /, /usr, /home, /var, and
> >/usr/local.
> >
> >I also have a 420Mb SCSI II hard disk (sdb) which has no fixed mount
> >point, but which I am using to store stuff I don't access frequently, eg,
> >moving downloaded *.deb files from /var/cache/apt/archives.
> >
> >I leave my box running Debian all the time, day+night, and the 1Gb IDE and
> >2Gb SCSI disks are fairly modern, and very quiet, but this 420Mb disk
> >consumes a fair amount of power, and sounds like a large aircraft taking
> >off.  I have configured this drive to respond to the "start/stop
> >unit" SCSI command, and configured the Host Adapter (PCI AHA 2940 fast
> >SCSI II) to send the "start unit" command to this drive during system
> >boot.
> >
> >What I need to know now, is (how) can I send the start/stop unit command
> >when Linux is running, so I can keep the thing spun down when is not
> >mounted (which is most of the time), and only send the command to spin it
> >up again when I need to mount it.  I know that you can do this in FreeBSD,
> >(which I run on another PC), the command is
> >"camcontrol stop [channel:device-id:LUN]" or
> >"camcontrol start [channel:device-id:LUN]".  I presume there is also a way
> >I can do this in Linux?  What packages (if any) will I need to add using
> >Dselect?
> >
> >
> >Hope someone can help (and I can take out these earplugs :-)
> >
> >
> >Simon Hales
> >
> >
> >
> >--
> >Unsubscribe?  mail -s unsubscribe debian-user-request@lists.debian.org < 
> >/dev/null
> --
> Criggie

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