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
Thegmountver 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 operation
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 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
MOUNTVERGEOM 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,
gmountverwill 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
HISTORY
The gmountver utility appeared in
FreeBSD 9.0.
AUTHORS
Edward Tomasz Napierala <trasz@FreeBSD.org>