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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
                 device.

       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 <dcvmoole@cs.vu.nl>

                                                                    DISKCTL(8)

NAME | SYNOPSIS | DESCRIPTION | COMMANDS | EXAMPLES | SEE ALSO | AUTHOR