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Re: [Qemu-devel] [PATCH V6 0/6] export internal snapshot by qemu-nbd


From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [PATCH V6 0/6] export internal snapshot by qemu-nbd
Date: Tue, 3 Dec 2013 14:46:15 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

On Fri, Nov 22, 2013 at 12:27:06PM +0800, Wenchao Xia wrote:
> This series allow user to read internal snapshot's contents without qemu-img
> convert.
> 
> V2:
>   Address Stefan's comments:
>   02: add 'fall through' comments in the case statement.
>   03: add doc about the difference of internal snapshot and backing chain
> snapshot, which is used in previous '--snapshot' parameter.
>   Other:
>   01,04: rebased on upstream with conflict resolved.
> 
> v3:
>   Address Paolo's comments:
>   02: add parameter "-l snapshot_id_or_name", rename options
> snapshot-load to load-snapshot, use QemuOpts.
>   03: rename snapshot-load to load-snapshot.
>   04: related change to test both -l and -L case.
>   05-07: add similar parameter for qemu-img convert.
>   Other:
>   01: foldered original snapshot logic into function
> bdrv_snapshot_load_tmp_by_id_or_name(), since multiple
> caller present in this version. Refined error message from
> ", reason: %s" to ": %s".
>   02: Refined error message from ", reason: %s" to ": %s".
>   03: Rename PARAM to SNAPSHOT_PARAM.
> 
> v4:
>   Address Eric's comments:
>   01: typo fix.
>   02: squashed patch. Use only one option -l and distiguish
> the cases by the starting string.
>   03: remove 'eval', remove '_supported_os Linux', remove the
> comments that have typo.
>   04: squashed patch. Add only one option -l and distiguish
> the cases by the starting string.
>   05: remove indentation.
>   Address Paolo's comments:
>   02: Use only one option -l and distiguish the cases by
> the starting string.
>   04: Use only one option -l and distiguish the cases by
> the starting string, mark old -s as deprecated, added doc
> for them.
> 
> v5:
>   Address Jeff's comments:
>   Quote image name in test cases.
> 
> v6:
>   Address Kevin's comments:
>   1: typo fix, remove device and snapshot info in error message.
>   2: use strstart().
>   3: use _require_command(), limit proto to file, since when proto=nbd
> it can't work. also changed _require_command() to tip better.
>   4: use strstart().
>   6: new patch, since I found the doc missing in debugging.
> 
> Wenchao Xia (6):
>   1 snapshot: distinguish id and name in load_tmp
>   2 qemu-nbd: support internal snapshot export
>   3 qemu-iotests: add 058 internal snapshot export with qemu-nbd case
>   4 qemu-img: add -l for snapshot in convert
>   5 qemu-iotests: add test for snapshot in qemu-img convert
>   6 qemu-nbd: add doc for option -f
> 
>  block/qcow2-snapshot.c       |   10 +++-
>  block/qcow2.h                |    5 ++-
>  block/snapshot.c             |   77 ++++++++++++++++++++++++++-
>  include/block/block_int.h    |    4 +-
>  include/block/snapshot.h     |   15 +++++-
>  qemu-img-cmds.hx             |    2 +-
>  qemu-img.c                   |   44 +++++++++++++---
>  qemu-img.texi                |   12 +++--
>  qemu-nbd.c                   |   47 ++++++++++++++++-
>  qemu-nbd.texi                |   10 +++-
>  tests/qemu-iotests/058       |  120 
> ++++++++++++++++++++++++++++++++++++++++++
>  tests/qemu-iotests/058.out   |   44 +++++++++++++++
>  tests/qemu-iotests/check     |    1 +
>  tests/qemu-iotests/common.rc |    3 +-
>  tests/qemu-iotests/group     |    1 +
>  15 files changed, 371 insertions(+), 24 deletions(-)
>  create mode 100755 tests/qemu-iotests/058
>  create mode 100644 tests/qemu-iotests/058.out

I'm happy overall but the test case must be reliable.



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