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nbd: Introduce NBD named exports.

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This patch allows to connect Qemu using NBD protocol to an nbd-server
using named exports.

For instance, if on the host "isoserver", in /etc/nbd-server/config, you have:

[generic]
[debian-500-ppc-netinst]
        exportname = /ISO/debian-500-powerpc-netinst.iso
[Fedora-10-ppc-netinst]
        exportname = /ISO/Fedora-10-ppc-netinst.iso

You can connect to it, using:

    qemu -cdrom nbd:isoserver:exportname=debian-500-ppc-netinst
    qemu -cdrom nbd:isoserver:exportname=Fedora-10-ppc-netinst

NOTE: you need at least nbd-server 2.9.18

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Laurent Vivier 2010-08-25 22:48:33 +02:00 • committed by Kevin Wolf
parent 2aa326be0d
commit 1d45f8b542
5 changed files with 168 additions and 32 deletions
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7
qemu-doc.texi
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@ -620,6 +620,13 @@ qemu linux1.img -hdb nbd:unix:/tmp/my_socket
qemu linux2.img -hdb nbd:unix:/tmp/my_socket
@end example
If the nbd-server uses named exports (since NBD 2.9.18), you must use the
"exportname" option:
@example
qemu -cdrom nbd:localhost:exportname=debian-500-ppc-netinst
qemu -cdrom nbd:localhost:exportname=openSUSE-11.1-ppc-netinst
@end example
@node pcsys_network
@section Network emulation