diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2019-02-22 14:29:38 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2019-03-08 12:26:46 +0100 |
| commit | 6c3944dc6219cefef6a968cf300d227fe3f92388 (patch) | |
| tree | a29c719a0dd5e302ee767a839512cd388d940f93 /qapi | |
| parent | 9b890bdcb6ec11868da92c1daeb51c69d9483da8 (diff) | |
qcow2: Implement data-file-raw create option
Provide an option to force QEMU to always keep the external data file
consistent as a standalone read-only raw image.
At the moment, this means making sure that write_zeroes requests are
forwarded to the data file instead of just updating the metadata, and
checking that no backing file is used.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/block-core.json | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/qapi/block-core.json b/qapi/block-core.json index e6faa94fa2..919d0530b2 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -62,6 +62,10 @@ # @data-file: the filename of the external data file that is stored in the # image and used as a default for opening the image (since: 4.0) # +# @data-file-raw: True if the external data file must stay valid as a +# standalone (read-only) raw image without looking at qcow2 +# metadata (since: 4.0) +# # @lazy-refcounts: on or off; only valid for compat >= 1.1 # # @corrupt: true if the image has been marked corrupt; only valid for @@ -80,6 +84,7 @@ 'data': { 'compat': 'str', '*data-file': 'str', + '*data-file-raw': 'bool', '*lazy-refcounts': 'bool', '*corrupt': 'bool', 'refcount-bits': 'int', @@ -4144,6 +4149,9 @@ # @data-file Node to use as an external data file in which all guest # data is stored so that only metadata remains in the qcow2 # file (since: 4.0) +# @data-file-raw True if the external data file must stay valid as a +# standalone (read-only) raw image without looking at qcow2 +# metadata (default: false; since: 4.0) # @size Size of the virtual disk in bytes # @version Compatibility level (default: v3) # @backing-file File name of the backing file if a backing file @@ -4160,6 +4168,7 @@ { 'struct': 'BlockdevCreateOptionsQcow2', 'data': { 'file': 'BlockdevRef', '*data-file': 'BlockdevRef', + '*data-file-raw': 'bool', 'size': 'size', '*version': 'BlockdevQcow2Version', '*backing-file': 'str', |