Poster of Linux kernelThe best gift for a Linux geek
scsi-spin

scsi-spin

Section: Maintenance Commands (8) Updated: 03 September 2001
Local index Up
 

NAME

scsi-spin - spin up and down a SCSI device  

SYNOPSIS

scsi-spin [-options...] [device]  

DESCRIPTION

scsi-spin let the user to manually spin up and down a SCSI device.

This command is particularly useful if you've got noisy (or hot) drives in a machine that you rarely need to access. This is not the same as the kernel patch that's floating around that will automatically spin down the drive after some time. scsi-spin is completely manual, and spinning down a drive that's in use, especially the one containing the scsi-spin binary, is probably a really bad idea.

To avoid running in trouble with such cases, scsi-spin verifies that the device to work on is not currently in use by scanning the mounted file system description file for a partition living on it and issue an error if this the case.

 

OPTIONS

-u, --up
spin up device.
-d, --down
spin down device.
-e, --loej
load or eject medium from drive (use along with -u or -d )
-w, --wait=[n]
wait up to n seconds for the spin up/down command to complete. Default is to return immediately after the command was sent to the device. Either repeat -w n times or set n to define the time to wait before to report a timeout.
-l, --lock
prevent removal of medium from device.
-L, --unlock
allow removal of medium from device.
-I, --oldioctl
use legacy ioctl interface instead of SG_IO to dialog with device (could not be supported on all platforms). -e and -w are not allowed with this option.
-v, --verbose=[n]
verbose mode. Either repeat -v or set n accordingly to increase verbosity. 1 is verbose, 2 is debug (dump SCSI commands and Sense buffer).
-f, --force
force spinning up/down the device even if it is in use.
-n, --noact
do nothing but check if the device is in use.
-p, --proc
use /proc/mounts instead of /etc/mtab to determine if the device is in use or not.
device
the device is any name in the filesystem which points to a SCSI block device (sd, scd) or generic SCSI device (sg). See section below.

 

SCSI devices naming convention

 

Old kernel naming convention

It is typically /dev/sd[a-z] , /dev/scd[0-9]* or /dev/sg[0-9]*.

 

scsidev naming convention

It is typically /dev/scsi/s[rdg]h[0-9]*-e????c?i?l? or /dev/scsi/<aliasname>.

 

devfs naming convention

It is typically /dev/scsi/host[0-9]/bus[0-9]/target[0-9]/lun[0-9]/disc (same for cd and generic devices) or short name /dev/sd/c[0-9]b[0-9]t[0-9]u[0-9] when devfsd "new compatibility entries" naming scheme is enabled.

 

SEE ALSO

scsiinfo(8), sg_start(8), sd(4), proc(5),

 

AUTHORS

Eric Delaunay <delaunay@debian.org>, 2001
Rob Browning <rlb@cs.utexas.edu>, 1998


 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
SCSI devices naming convention
Old kernel naming convention
scsidev naming convention
devfs naming convention
SEE ALSO
AUTHORS

This document was created by man2html, using the manual pages.
Time: 22:02:19 GMT, April 16, 2011