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block: Accept node-name for drive-mirror

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In order to remove the necessity to use BlockBackend names in the
external API, we want to allow node-names everywhere. This converts
drive-mirror to accept a node-name without lifting the restriction that
we're operating at a root node.

In case of an invalid device name, the command returns the GenericError
error class now instead of DeviceNotFound, because this is what
qmp_get_root_bs() returns.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Kevin Wolf
2016-06-23 14:20:24 +02:00
parent b7e4fa2242
commit 0524e93a3f
4 changed files with 11 additions and 19 deletions
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3
qmp-commands.hx
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@@ -1689,7 +1689,8 @@ Arguments:
- "job-id": Identifier for the newly-created block job. If omitted,
the device name will be used. (json-string, optional)
- "device": device name to operate on (json-string)
- "device": the device name or node-name of a root node whose writes should be
mirrored. (json-string)
- "target": name of new image file (json-string)
- "format": format of new image (json-string, optional)
- "node-name": the name of the new block driver state in the node graph