GMOUNTVER(8)		  BSD System Manager's Manual		  GMOUNTVER(8)

NAME
     gmountver — control utility for disk mount verification GEOM class

SYNOPSIS
     gmountver create [-v] dev ...
     gmountver destroy [-fv] prov ...
     gmountver list
     gmountver status [-s name]
     gmountver load [-v]
     gmountver unload [-v]

DESCRIPTION
     The gmountver utility is used to control the mount verification GEOM
     class.  When configured, it passes all the I/O requests to the underlying
     provider.	When the underlying provider disappears - for example because
     the disk device got disconnected - it queues all the I/O requests and
     waits for the provider to reappear.  When that happens, it attaches to it
     and sends the queued requests.

     The first argument to gmountver indicates an action to be performed:

     create   Cache the given devices with specified name.  The kernel module
	      geom_mountver.ko will be loaded if it is not loaded already.

     destroy  Destroy name.

     list     See geom(8).

     status   See geom(8).

     load     See geom(8).

     unload   See geom(8).

     Additional options:

     -f      Force the removal of the specified mountver device.

     -v      Be more verbose.

SYSCTL VARIABLES
     The following sysctl(8) variables can be used to control the behavior of
     the MOUNTVER GEOM class.  The default value is shown next to each vari‐
     able.

     kern.geom.mountver.debug: 0
	     Debug level of the MOUNTVER GEOM class.  This can be set to a
	     number between 0 and 3 inclusive.	If set to 0 minimal debug
	     information is printed, and if set to 3 the maximum amount of
	     debug information is printed.

     kern.geom.mountver.check_ident: 1
	     This can be set to 0 or 1.  If set to 0, gmountver will reattach
	     to the device even if the device reports a different disk ID.

EXIT STATUS
     Exit status is 0 on success, and 1 if the command fails.

SEE ALSO
     geom(4), geom(8)

HISTORY
     The gmountver utility appeared in FreeBSD 9.0.

AUTHORS
     Edward Tomasz Napierala ⟨trasz@FreeBSD.org⟩

BSD			       January 27, 2015 			   BSD