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vmdk: Implement .bdrv_get_info()

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This will return cluster_size and needs_compressed_writes to caller, if all the
extents have the same value (or there's only one extent). Otherwise return
-ENOTSUP.

cluster_size is only reported for sparse formats.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Fam Zheng 2014-05-06 21:08:45 +08:00 • committed by Stefan Hajnoczi
parent ba0ad89e2c
commit 74fe188cd1
2 changed files with 22 additions and 0 deletions
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tests/qemu-iotests/059.out
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@ -2050,6 +2050,7 @@ qemu-img: Could not open 'TEST_DIR/t.IMGFMT': File truncated, expecting at least
image: TEST_DIR/iotest-version3.IMGFMT
file format: IMGFMT
virtual size: 1.0G (1073741824 bytes)
cluster_size: 65536
=== Testing 4TB monolithicFlat creation and IO ===
Formatting 'TEST_DIR/iotest-version3.IMGFMT', fmt=IMGFMT size=4398046511104