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-rw-r--r--docs/tools/qemu-img.rst7
1 files changed, 7 insertions, 0 deletions
diff --git a/docs/tools/qemu-img.rst b/docs/tools/qemu-img.rst
index 38d464ea3f..320cb52b9f 100644
--- a/docs/tools/qemu-img.rst
+++ b/docs/tools/qemu-img.rst
@@ -616,6 +616,7 @@ Command description:
required size: 524288
fully allocated size: 1074069504
+ bitmaps size: 0
The ``required size`` is the file size of the new image. It may be smaller
than the virtual disk size if the image format supports compact representation.
@@ -625,6 +626,12 @@ Command description:
occupy with the exception of internal snapshots, dirty bitmaps, vmstate data,
and other advanced image format features.
+ The ``bitmaps size`` is the additional size required in order to
+ copy bitmaps from a source image in addition to the guest-visible
+ data; the line is omitted if either source or destination lacks
+ bitmap support, or 0 if bitmaps are supported but there is nothing
+ to copy.
+
.. option:: snapshot [--object OBJECTDEF] [--image-opts] [-U] [-q] [-l | -a SNAPSHOT | -c SNAPSHOT | -d SNAPSHOT] FILENAME
List, apply, create or delete snapshots in image *FILENAME*.