qemu-img: map: report compressed data blocks
Right now "qemu-img map" reports compressed blocks as containing data
but having no host offset. This is not very informative. Instead,
let's add another boolean field named "compressed" in case JSON output
mode is specified. This is achieved by utilizing new allocation status
flag BDRV_BLOCK_COMPRESSED for bdrv_block_status().
Also update the expected qemu-iotests outputs to contain the new field.
Signed-off-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>
Message-ID: <20230907210226.953821-3-andrey.drobyshev@virtuozzo.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 2b1d493..89751d8 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -409,6 +409,8 @@
#
# @zero: whether the virtual blocks read as zeroes
#
+# @compressed: true if the data is stored compressed (since 8.2)
+#
# @depth: number of layers (0 = top image, 1 = top image's backing
# file, ..., n - 1 = bottom image (where n is the number of images
# in the chain)) before reaching one for which the range is
@@ -426,8 +428,8 @@
##
{ 'struct': 'MapEntry',
'data': {'start': 'int', 'length': 'int', 'data': 'bool',
- 'zero': 'bool', 'depth': 'int', 'present': 'bool',
- '*offset': 'int', '*filename': 'str' } }
+ 'zero': 'bool', 'compressed': 'bool', 'depth': 'int',
+ 'present': 'bool', '*offset': 'int', '*filename': 'str' } }
##
# @BlockdevCacheInfo:
