DISKCTL(8) System Manager's Manual DISKCTL(8)
NAME
diskctl - control disk drive
SYNOPSIS
diskctl device command [arguments]
DESCRIPTION
The diskctl tool allows one to view and manage settings of, and perform
actions on, disk drives. The following paragraph lists the commands
that are currently supported by this tool. Please note that not all
disks and drivers support all commands.
COMMANDS
getwcache Retrieve the status (on or off) of the write cache on the de-
vice.
setwcache [on|off]
Enable or disable the write cache on the device. Disabling
the write cache typically also triggers a cache flush.
flush Tell the device to flush its write cache. The call will not
return until the cache flush has completed.
EXAMPLES
diskctl /dev/c0d0 setwcache on
# Turn on the write cache on c0d0.
diskctl /dev/c1d2 flush
# Trigger a cache flush on c1d2.
SEE ALSO
controller(4).
AUTHOR
David van Moolenbroek <
[email protected]>
DISKCTL(8)