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block: Accept node-name for block-commit

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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
block-commit to accept a node-name without lifting the restriction that
we're operating at a root node.

As libvirt makes use of the DeviceNotFound error class, we must add
explicit code to retain this behaviour because qmp_get_root_bs() only
returns GenericErrors.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
This commit is contained in:
Kevin Wolf 2016-06-23 14:20:24 +02:00
parent b6c1bae5df
commit 1d13b167fd
3 changed files with 13 additions and 14 deletions
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2
qapi/block-core.json
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@ -1020,7 +1020,7 @@
# @job-id: #optional identifier for the newly-created block job. If
# omitted, the device name will be used. (Since 2.7)
#
# @device: the name of the device
# @device: the device name or node-name of a root node
#
# @base: #optional The file name of the backing image to write data into.
# If not specified, this is the deepest backing image