[Qemu-devel] [PATCH RFC v11 0/6] qcow2, raw: add preallocation=full and preallocation=falloc

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

Kevin,

This is v11 series for you to check how the series depends on Max's
minimal_blob_size(). I'm aware that you rejected the calculation of
metadata size, but posting this series so that you can comment on it.

This series depends on patches 1-3 of Max's series 'qemu-img: Implement
commit like QMP'.

Option preallocation=full preallocates disk space for image by writing
zeros to disk, this ensures disk space in any cases.

Option preallocation=falloc preallocates disk space by calling
posix_fallocate(). This is faster than preallocation=full. 

The series is also at https://github.com/taohu/qemu/commits/preallocation-v11
for you to check out.

changes to v10:

  - PreallocMode is moved from file qapi-schema.json to qapi/block-core.json
  - introdues preallocation=falloc, no changes to preallocation=metadata
  - using minimal_blob_size() to calculate metadata size for qcow2
  - indentation fix in file blockdev.c

Hu Tao (6):
  block: round up file size to nearest sector
  raw, qcow2: don't convert file size to sector size
  rename parse_enum_option to qapi_enum_parse and make it public
  qapi: introduce PreallocMode and a new PreallocMode full.
  raw-posix: Add falloc and full preallocation option
  qcow2: Add falloc and full preallocation option

 block/qcow2.c              | 54 ++++++++++++++++++++++++++++---------
 block/raw-posix.c          | 66 +++++++++++++++++++++++++++++++++++++++-------
 block/raw-win32.c          |  6 ++---
 blockdev.c                 | 30 +++++----------------
 include/qapi/util.h        | 17 ++++++++++++
 qapi/Makefile.objs         |  1 +
 qapi/block-core.json       | 17 ++++++++++++
 qapi/qapi-util.c           | 32 ++++++++++++++++++++++
 tests/qemu-iotests/082.out | 54 ++++++++++++++++++-------------------
 tests/qemu-iotests/096     | 64 ++++++++++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/096.out | 14 ++++++++++
 tests/qemu-iotests/group   |  1 +
 12 files changed, 280 insertions(+), 76 deletions(-)
 create mode 100644 include/qapi/util.h
 create mode 100644 qapi/qapi-util.c
 create mode 100755 tests/qemu-iotests/096
 create mode 100644 tests/qemu-iotests/096.out

-- 
1.9.3