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block/rbd: add deprecation documentation for filename keyvalue pairs 

Signed-off-by: Jeff Cody <jcody@redhat.com>
Message-id: 647f5b5ab7efd8bf567a504c832b1d2d6f719b23.1536704901.git.jcody@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
This commit is contained in:
Jeff Cody 2018-09-11 18:32:33 -04:00
parent 66e6a735e9
commit 3bebd37e04
1 changed files with 15 additions and 0 deletions
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@ -128,6 +128,21 @@ used instead.
In order to prevent QEMU from automatically opening an image's backing
chain, use ``"backing": null'' instead.
@subsubsection rbd keyvalue pair encoded filenames: "" (since 3.1.0)
Options for ``rbd'' should be specified according to its runtime options,
like other block drivers. Legacy parsing of keyvalue pair encoded
filenames is useful to open images with the old format for backing files;
These image files should be updated to use the current format.
Example of legacy encoding:
@code{json:@{"file.driver":"rbd", "file.filename":"rbd:rbd/name"@}}
The above, converted to the current supported format:
@code{json:@{"file.driver":"rbd", "file.pool":"rbd", "file.image":"name"@}}
@subsection vio-spapr-device device options
@subsubsection "irq": "" (since 3.0.0)