[Qemu-devel] [PATCH 0/3] qcow2: Rewrite alloc_refcount_block

[Kevin Wolf <kwolf@redhat.com>]

The current implementation of alloc_refcount_block and grow_refcount_table has
fundamental problems regarding error handling. There are some places where an
I/O error means that the image is going to be corrupted. I have found that the
only way to fix this is to completely rewrite the thing.

Just sending as an RFC to the list hasn't generated a lot of comments (to be
precise, not a single one). This is a critical part of qcow2 and needs reviews.
So let's try it another way: People in CC, please give it a review. Sooner or
later some of you will need to do so anyway.

Kevin Wolf (3):
  qcow2: Factor next_refcount_table_size out
  qcow2: Rewrite alloc_refcount_block/grow_refcount_table
  qcow2: More check for qemu-img check

 block/qcow2-refcount.c |  334 +++++++++++++++++++++++++++++++++++-------------
 1 files changed, 244 insertions(+), 90 deletions(-)