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nbdkit-libvirt-plugin(1) NBDKIT nbdkit-libvirt-plugin(1)

NAME

nbdkit-libvirt-plugin - nbdkit libvirt plugin using virDomainBlockPeek

SYNOPSIS

 nbdkit libvirt [connect=URI] domain=DOMAIN disk=DISK

EXAMPLE

 nbdkit libvirt domain=MyGuest disk=sda
 guestfish --ro --format=raw -a nbd://localhost

DESCRIPTION

"nbdkit-libvirt-plugin" is an nbdkit(1) plugin that lets you access libvirt guest disks. Only read-only access is possible. It is implemented using the libvirt "virDomainBlockPeek" API. It can also be used over remote libvirt connections.

PARAMETERS

This optional parameter specifies the libvirt connection URI.
This required parameter specifies the libvirt domain name (guest name).
This required parameter specifies the guest's disk that we want to read.

You can either give the path to the backing device (/path/to/disk) or the target name (eg. "sda").

In either case use "virsh dumpxml DOMAIN" to list possible disks. Look for "<source dev=...>" or "<source file=...>" or "<target dev=...>" in the XML.

FILES

$plugindir/nbdkit-libvirt-plugin.so
The plugin.

Use "nbdkit --dump-config" to find the location of $plugindir.

VERSION

"nbdkit-libvirt-plugin" first appeared in nbdkit 1.0.

SEE ALSO

nbdkit(1), nbdkit-plugin(3), http://libvirt.org, https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainBlockPeek.

AUTHORS

Richard W.M. Jones

COPYRIGHT

Copyright (C) 2013-2020 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.

THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

2022-11-30 nbdkit-1.32.4