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file-posix: Support .bdrv_co_create

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This adds the .bdrv_co_create driver callback to file, which enables
image creation over QMP.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Kevin Wolf 2018-01-16 16:04:21 +01:00
parent b0292b851b
commit 927f11e131
2 changed files with 75 additions and 24 deletions
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20
qapi/block-core.json
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@ -3358,6 +3358,24 @@
##
{ 'command': 'blockdev-del', 'data': { 'node-name': 'str' } }
##
# @BlockdevCreateOptionsFile:
#
# Driver specific image creation options for file.
#
# @filename Filename for the new image file
# @size Size of the virtual disk in bytes
# @preallocation Preallocation mode for the new image (default: off)
# @nocow Turn off copy-on-write (valid only on btrfs; default: off)
#
# Since: 2.12
##
{ 'struct': 'BlockdevCreateOptionsFile',
'data': { 'filename': 'str',
'size': 'size',
'*preallocation': 'PreallocMode',
'*nocow': 'bool' } }
##
# @BlockdevQcow2Version:
#
@ -3429,7 +3447,7 @@
'bochs': 'BlockdevCreateNotSupported',
'cloop': 'BlockdevCreateNotSupported',
'dmg': 'BlockdevCreateNotSupported',
'file': 'BlockdevCreateNotSupported',
'file': 'BlockdevCreateOptionsFile',
'ftp': 'BlockdevCreateNotSupported',
'ftps': 'BlockdevCreateNotSupported',
'gluster': 'BlockdevCreateNotSupported',