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authorMax Reitz <mreitz@redhat.com>2018-02-24 16:40:33 +0100
committerEric Blake <eblake@redhat.com>2018-03-19 14:58:36 -0500
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parente59a0cf17b1b9932b65e6fc25d6856976f5e4831 (diff)
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block: Deprecate "backing": ""
We have a clear replacement, so let's deprecate it. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Message-Id: <20180224154033.29559-8-mreitz@redhat.com> Signed-off-by: Eric Blake <eblake@redhat.com>
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diff --git a/qemu-doc.texi b/qemu-doc.texi
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--- a/qemu-doc.texi
+++ b/qemu-doc.texi
@@ -2789,6 +2789,13 @@ support page sizes < 4096 any longer.
The ``xlnx-ep108'' machine has been replaced by the ``xlnx-zcu102'' machine.
The ``xlnx-zcu102'' machine has the same features and capabilites in QEMU.
+@section Block device options
+
+@subsection "backing": "" (since 2.12.0)
+
+In order to prevent QEMU from automatically opening an image's backing
+chain, use ``"backing": null'' instead.
+
@node License
@appendix License