diff options
Diffstat (limited to 'qapi/block-core.json')
| -rw-r--r-- | qapi/block-core.json | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index 6a697f1458..aa1252778c 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -680,6 +680,32 @@ 'data': 'BlockdevSnapshot' } ## +# @change-backing-file +# +# Change the backing file in the image file metadata. This does not +# cause QEMU to reopen the image file to reparse the backing filename +# (it may, however, perform a reopen to change permissions from +# r/o -> r/w -> r/o, if needed). The new backing file string is written +# into the image file metadata, and the QEMU internal strings are +# updated. +# +# @image-node-name: The name of the block driver state node of the +# image to modify. +# +# @device: The name of the device that owns image-node-name. +# +# @backing-file: The string to write as the backing file. This +# string is not validated, so care should be taken +# when specifying the string or the image chain may +# not be able to be reopened again. +# +# Since: 2.1 +## +{ 'command': 'change-backing-file', + 'data': { 'device': 'str', 'image-node-name': 'str', + 'backing-file': 'str' } } + +## # @block-commit # # Live commit of data from overlay image nodes into backing nodes - i.e., |