QEMU-NBD(8)QEMU-NBD(8)NAMEqemu-nbd - QEMU Disk Network Block Device Server
SYNOPSIS
usage: qemu-nbd [OPTION]... filename
DESCRIPTION
Export QEMU disk image using NBD protocol.
OPTIONS
filename
is a disk image filename
-p, --port=port
port to listen on (default B<10809>)
-o, --offset=offset
offset into the image
-b, --bind=iface
interface to bind to (default B<0.0.0.0>)
-k, --socket=path
Use a unix socket with path I<path>
-f, --format=format
Set image format as I<format>
-r, --read-only
export read-only
-P, --partition=num
only expose partition I<num>
-s, --snapshot
use I<filename> as an external snapshot, create a temporary
file with backing_file=I<filename>, redirect the write to
the temporary one
-l, --load-snapshot=snapshot_param
load an internal snapshot inside I<filename> and export it
as an read-only device, I<snapshot_param> format is
'snapshot.id=[ID],snapshot.name=[NAME]' or '[ID_OR_NAME]'
-n, --nocache
--cache=cache
set cache mode to be used with the file. See the documentation of
the emulator's C<-drive cache=...> option for allowed values.
--aio=aio
choose asynchronous I/O mode between B<threads> (the default)
and B<native> (Linux only).
--discard=discard
toggles whether I<discard> (also known as I<trim> or I<unmap>)
requests are ignored or passed to the filesystem. The default is no
(B<--discard=ignore>).
-c, --connect=dev
connect I<filename> to NBD device I<dev>
-d, --disconnect
disconnect the specified device
-e, --shared=num
device can be shared by I<num> clients (default B<1>)
-f, --format=fmt
force block driver for format I<fmt> instead of auto-detecting
-t, --persistent
don't exit on the last connection
-v, --verbose
display extra debugging information
-h, --help
display this help and exit
-V, --version
output version information and exit
SEE ALSOqemu-img(1)AUTHOR
Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>. This is
free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE.
2016-02-18 QEMU-NBD(8)
