Name
blockdev — call block device ioctls from the command
line
Synopsis
blockdev [options] commands
devices
DESCRIPTION
The utility blockdev allows one to call block
device ioctls from the command line.
OPTIONS
−V-
Print version and exit.
−q-
Be quiet.
−v-
Be verbose.
COMMANDS
−−setro-
Set read-only.
−−setrw-
Set read-write.
−−getro-
Get read-only. Print 1 if the device is read-only, 0
otherwise.
−−getss-
Print sectorsize in bytes - usually 512.
−−getsize-
Print device capacity (in 512-byte sectors).
−−setra N-
Set readahead to N
512-byte sectors.
−−getra-
Print readahead (in 512-byte sectors).
−−flushbufs-
Flush buffers.
−−rereadpt-
Reread partition table.
Copyright 1998 Andries E. Brouwer (aeb@cwi.nl)
May be distributed under the GNU General Public License
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