scsi-spin - spin up and down a SCSI device
scsi-spin [-options...] [device]
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
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
- -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
- -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.
- the device is any name in the filesystem which points to a
SCSI block device (sd, scd) or generic SCSI device (sg). See section
It is typically /dev/sd[a-z]
It is typically /dev/scsi/s[rdg]h[0-9]*-e????c?i?l?
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
"new compatibility entries" naming scheme is enabled.
Eric Delaunay <firstname.lastname@example.org>, 2001
Rob Browning <email@example.com>, 1998