[Qemu-devel] [RFC][PATCH 0/2] block: Add flush after metadata writes

[Kevin Wolf]

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(-)