This will return cluster_size and is_compressed to caller, if all the
extents has the same value (or there's only one extent). Otherwise
return -ENOTSUP.
Signed-off-by: Fam Zheng <f...@redhat.com>
---
block/vmdk.c | 19 +++++++++++++++++++
tests/qemu-iotests/059.out | 1 +
2 files changed, 20 insertions(+)
diff --git a/block/vmdk.c b/block/vmdk.c
index f439206..07f77d8 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -1905,6 +1905,24 @@ static ImageInfoSpecific
*vmdk_get_specific_info(BlockDriverState *bs)
return spec_info;
}
+static int vmdk_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
+{
+ int i;
+ BDRVVmdkState *s = bs->opaque;
+ assert(s->num_extents);
+ bdi->is_compressed = s->extents[0].compressed;
+ bdi->cluster_size = s->extents[0].cluster_sectors << BDRV_SECTOR_BITS;
+ /* See if we have multiple extents but they have different cases */
+ for (i = 1; i < s->num_extents; i++) {
+ if (bdi->is_compressed != s->extents[i].compressed ||
+ bdi->cluster_size !=
+ s->extents[i].cluster_sectors << BDRV_SECTOR_BITS) {
+ return -ENOTSUP;
+ }
+ }
+ return 0;
+}
+
static QEMUOptionParameter vmdk_create_options[] = {
{
.name = BLOCK_OPT_SIZE,
@@ -1959,6 +1977,7 @@ static BlockDriver bdrv_vmdk = {
.bdrv_get_allocated_file_size = vmdk_get_allocated_file_size,
.bdrv_has_zero_init = vmdk_has_zero_init,
.bdrv_get_specific_info = vmdk_get_specific_info,
+ .bdrv_get_info = vmdk_get_info,
.create_options = vmdk_create_options,
};
diff --git a/tests/qemu-iotests/059.out b/tests/qemu-iotests/059.out
index 2ded8a9..8394d14 100644
--- a/tests/qemu-iotests/059.out
+++ b/tests/qemu-iotests/059.out
@@ -21,6 +21,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=2147483648
image: TEST_DIR/t.IMGFMT
file format: IMGFMT
virtual size: 2.0G (2147483648 bytes)
+cluster_size: 2147483648
=== Testing monolithicFlat with zeroed_grain ===
qemu-img: TEST_DIR/t.IMGFMT: Flat image can't enable zeroed grain
--
1.8.4.2
