BLOCKDEV(8)BLOCKDEV(8)NAMEblockdev - call block device ioctls from the command line
SYNOPSISblockdev [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.
--getbsz
Print blocksize in bytes.
--setbsz N
Set blocksize to N bytes.
--getsz
Get size in 512-byte sectors.
--getsize
Print device size (in 512-byte sectors).
--getsize64
Print device size in bytes.
--setra N
Set readahead to N 512-byte sectors.
--getra
Print readahead (in 512-byte sectors).
--flushbufs
Flush buffers.
--rereadpt
Reread partition table.
--rmpart N
remove selected partition from kernel. (DEPRECATED)
--rmparts
remove all device partitions from kernel. (DEPRECATED)
--report [<device> ...]
print read-only status, block size, sector size and geometry for
all devices (according to /proc/partitions) or for given devices
only. This command cannot be used together with other commands.
(DEPRECATED)
May 2000 BLOCKDEV(8)