[Qemu-devel] [PATCHv3 1.8 0/9] qemu-img convert optimizations

[Peter Lieven]

this series adds some optimizations for qemu-img during convert which
have been developed recently:
- skipping input based on get_block_status
- variable I/O buffer size
- align write requests to cluster_size

v2->v3:
  - added Paolos comments in Patch 1
  - changed the comment in patch 7 [Paolo]
  - remove the patch to add sector progress output
  - added a new patch to decrease the progress update interval.

v1->v2:
  - introduce opt_transfer_length in BlockLimits [Paolo]
  - remove knobs for iobuffer_size and alignment and
    use them unconditionally [Paolo]
  - calculate I/O buffer size by BlockLimits information [Paolo]
  - change the alignment patch to round down to the
    last and not to the next aligned sector [Paolo]
  - limit updates in the sector progress output
  - new patch to increase the default for min_sparse [Paolo]

Peter Lieven (9):
  qemu-img: add support for skipping zeroes in input during convert
  qemu-img: fix usage instruction for qemu-img convert
  block/iscsi: set bdi->cluster_size
  block: add opt_transfer_length to BlockLimits
  block/iscsi: set bs->bl.opt_transfer_length
  qemu-img: dynamically adjust iobuffer size during convert
  qemu-img: round down request length to an aligned sector
  qemu-img: increase min_sparse to 128 sectors (64kb)
  qemu-img: decrease progress update interval on convert

 block/iscsi.c             |   10 ++++
 include/block/block_int.h |    3 ++
 qemu-img.c                |  131 +++++++++++++++++++++++++++------------------
 qemu-img.texi             |    2 +-
 4 files changed, 93 insertions(+), 53 deletions(-)

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1.7.9.5