[Qemu-devel] [PATCH v2 0/5] Fix conversion from ISO to VMDK streamOptimized

[Fam Zheng]

Previouly, conversion from ISO to VMDK with subformat=streamOptimized fails:

    $ ./qemu-img convert -O vmdk -o subformat=streamOptimized foo.iso bar.vmdk
    VMDK: can't write to allocated cluster for streamOptimized
    qemu-img: error while writing sector 64: Input/output error

Current code in qemu-img.c picks the normal convert loop for this case, rather
than the "compress == true" loop, which writes in target cluster size. In VMDK
streamOptimized, writes must be in cluster unit, because write to an allocated
cluster is not supported.

This series adds an is_compressed field in BlockDriverInfo, and use compressed
convertion loop if the block driver set this field to true.

Implement .bdrv_get_info and .bdrv_write_compressed in VMDK driver to fit into
this procedure.

v2: Rebase to current master.



Fam Zheng (5):
  qemu-img: Convert by cluster size if target is compressed
  vmdk: Implement .bdrv_write_compressed
  block: Change BlockDriverInfo.cluster_size to 64 bits
  vmdk: Implement .bdrv_get_info()
  mirror: Check for bdrv_get_info result

 block/mirror.c             |  4 ++--
 block/vmdk.c               | 33 +++++++++++++++++++++++++++++++++
 include/block/block.h      |  3 ++-
 qemu-img.c                 |  3 +++
 tests/qemu-iotests/059.out |  4 ++++
 5 files changed, 44 insertions(+), 3 deletions(-)

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1.8.5.4