QEMU-NBD(8)															       QEMU-NBD(8)

NAME

       qemu-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<1024>)

       -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>

       -r, --read-only
	     export read-only

       -P, --partition=num
	     only expose partition I<num>

       -s, --snapshot
	     use snapshot file

       -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 ALSO

       qemu-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.

								    2014-06-10							       QEMU-NBD(8)