freebsd man page for gmountver

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 underly-
     ing 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
     variable.

     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 informa-
	     tion 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