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

NAME
     gmountver -- control utility for disk mount verification GEOM class

SYNOPSIS
     gmountver create [-v] prov	...
     gmountver destroy [-fv] name
     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   Enable mount verification	for the	given provider.	 If the	opera-
	      tion succeeds, a new GEOM	provider will be created using the
	      given provider's name with a `.mountver' suffix.	The kernel
	      module geom_mountver.ko will be loaded if	it is not loaded al-
	      ready.

     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 in-
	     formation 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				 May 18, 2015				   BSD
NAME | SYNOPSIS | DESCRIPTION | SYSCTL VARIABLES | EXIT STATUS | SEE ALSO | HISTORY | AUTHORS

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