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1@example
2@c man begin SYNOPSIS
3usage: qemu-nbd [OPTION]... @var{filename}
4@c man end
5@end example
6
7@c man begin DESCRIPTION
8
071c9394 9Export QEMU disk image using NBD protocol.
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10
11@c man end
12
13@c man begin OPTIONS
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14@table @option
15@item @var{filename}
7a5ca864 16 is a disk image filename
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17@item -p, --port=@var{port}
18 port to listen on (default @samp{1024})
19@item -o, --offset=@var{offset}
7a5ca864 20 offset into the image
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21@item -b, --bind=@var{iface}
22 interface to bind to (default @samp{0.0.0.0})
23@item -k, --socket=@var{path}
24 Use a unix socket with path @var{path}
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25@item -r, --read-only
26 export read-only
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27@item -P, --partition=@var{num}
28 only expose partition @var{num}
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29@item -s, --snapshot
30 use snapshot file
31@item -n, --nocache
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32@itemx --cache=@var{cache}
33 set cache mode to be used with the file. See the documentation of
34 the emulator's @code{-drive cache=...} option for allowed values.
35@item --aio=@var{aio}
36 choose asynchronous I/O mode between @samp{threads} (the default)
37 and @samp{native} (Linux only).
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38@item --discard=@var{discard}
39 toggles whether @dfn{discard} (also known as @dfn{trim} or @dfn{unmap})
40 requests are ignored or passed to the filesystem. The default is no
41 (@samp{--discard=ignore}).
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42@item -c, --connect=@var{dev}
43 connect @var{filename} to NBD device @var{dev}
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44@item -d, --disconnect
45 disconnect the specified device
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46@item -e, --shared=@var{num}
47 device can be shared by @var{num} clients (default @samp{1})
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48@item -f, --format=@var{fmt}
49 force block driver for format @var{fmt} instead of auto-detecting
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50@item -t, --persistent
51 don't exit on the last connection
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52@item -v, --verbose
53 display extra debugging information
54@item -h, --help
55 display this help and exit
56@item -V, --version
57 output version information and exit
58@end table
59
60@c man end
61
62@ignore
63
64@setfilename qemu-nbd
65@settitle QEMU Disk Network Block Device Server
66
67@c man begin AUTHOR
68Copyright (C) 2006 Anthony Liguori <anthony@codemonkey.ws>.
69This is free software; see the source for copying conditions. There is NO
70warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
71@c man end
72
73@c man begin SEEALSO
74qemu-img(1)
75@c man end
76
77@end ignore