scsi-spin - spin up and down a SCSI device
scsi-spin [-options...] [device]
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.
spin up device.
spin down device.
load or eject medium from drive (use along with -u or -d )
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.
prevent removal of medium from device.
allow removal of medium from device.
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.
verbose mode. Either repeat -v or set n accordingly to increase
verbosity. 1 is verbose, 2 is debug (dump SCSI commands and
force spinning up/down the device even if it is in use.
do nothing but check if the device is in use.
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
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.
scsiinfo(8), sg_start(8), sd(4), proc(5),
Eric Delaunay <email@example.com>, 2001
Rob Browning <firstname.lastname@example.org>, 1998
03 September 2001 scsi-spin(8)