[Qemu-devel] [PATCH v8 0/4] qemu-img: add preallocation=full

[Hu Tao <hutao@cn.fujitsu.com>]

The purpose of this series is to use posix_fallocate() when creating
img file to ensure there are disk space for it which is way fast than
acturally writing to disk. But this only works in file system level.
For cases like thin provisioning, an option full preallocation is
added to write zeros to storage to ensure disk space.

Hu Tao (4):
  qapi: introduce PreallocMode and a new PreallocMode full.
  raw, qcow2: don't convert file size to sector size
  raw-posix: Add full image preallocation option
  qcow2: Add full image preallocation option

 block/qcow2.c              | 95 ++++++++++++++++++++++++++++++++++++++++------
 block/raw-posix.c          | 63 ++++++++++++++++++++++++++----
 block/raw-win32.c          |  4 +-
 qapi-schema.json           | 14 +++++++
 tests/qemu-iotests/082.out | 54 +++++++++++++-------------
 5 files changed, 182 insertions(+), 48 deletions(-)

-- 
1.8.5.2.229.g4448466