This addresses the data integrity problems described at http://wiki.qemu.org/Features/Qcow2DataIntegrity#Metadata_update_ordering.2C_Part_2
These problems are the same for all image formats (except raw, which doesn't have any metadata), so I'm going to add more patches for the other formats for the real patch submission. Kevin Wolf (2): block: Add bdrv_(p)write_sync qcow2: Use bdrv_(p)write_sync for metadata writes block.c | 37 +++++++++++++++++++++++++++++++++++++ block.h | 4 ++++ block/qcow2-cluster.c | 16 ++++++++-------- block/qcow2-refcount.c | 18 +++++++++--------- block/qcow2-snapshot.c | 14 +++++++------- block/qcow2.c | 10 +++++----- 6 files changed, 70 insertions(+), 29 deletions(-)
