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¶
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.
2022-05-19 |