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qcow2: Creating images with external data file

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This adds a .bdrv_create option to use an external data file.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2019-01-14 16:57:27 +01:00
parent 0e8c08be27
commit dcc98687f8
3 changed files with 31 additions and 0 deletions
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4
qapi/block-core.json
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@ -4135,6 +4135,9 @@
# Driver specific image creation options for qcow2.
#
# @file Node to create the image format on
# @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)
# @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
@ -4150,6 +4153,7 @@
##
{ 'struct': 'BlockdevCreateOptionsQcow2',
'data': { 'file': 'BlockdevRef',
'*data-file': 'BlockdevRef',
'size': 'size',
'*version': 'BlockdevQcow2Version',
'*backing-file': 'str',