NAME¶
nbdkit-streaming-plugin - nbdkit streaming plugin
SYNOPSIS¶
nbdkit streaming pipe=FILENAME
DESCRIPTION¶
"nbdkit-streaming-plugin" is a plugin for
nbdkit(1) that can
turn certain kinds of input into a stream.
If the NBD client opens the NBD port, and writes from the start to the end of
the disk without seeking backwards, then this plugin will turn the resulting
disk image into a stream of data which is written to the named
"pipe" parameter.
Typical usage is with qemu tools. For example:
qemu-img convert input -O raw output
does
not work if "output" is a pipe. However this does:
nbdkit -U /tmp/nbd.sock streaming pipe=output --run '
qemu-img convert -n input -O raw $nbd
'
PARAMETERS¶
- pipe=FILENAME
- Write to the named pipe or socket. If the pipe or socket does not exist,
then it is created (as a named FIFO), otherwise the existing pipe or
socket is opened and used.
This parameter is required.
TO DO¶
This plugin would be much nicer if it supported the concept of a
"window" of data, allowing limited reverse seeks and reads.
SEE ALSO¶
nbdkit(1),
nbdkit-plugin(3).
AUTHORS¶
Richard W.M. Jones
COPYRIGHT¶
Copyright (C) 2014 Red Hat Inc.
LICENSE¶
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
- •
- Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
- •
- Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
- •
- Neither the name of Red Hat nor the names of its contributors may be used
to endorse or promote products derived from this software without specific
prior written permission.
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