[libvirt] [PATCH] qemu: Error prompt if invalid dump image format specified

[Osier Yang]

于 2011年01月17日 22:41, Eric Blake 写道:
> On 01/16/2011 09:39 PM, Osier Yang wrote:
>> "getCompressionType" trys to throw error when invalid dump image
>> format is specified, or the compression program for the specified
>> image format is not available, but at the same time, it returns
>> enum qemud_save_formats, as a result, upper function will think
>> it was successful, and disgard to check the error, this fix makes
>> changes so that it returns -1 on FAILURE, And to be consistent with
>> "save", won't use "raw" as the default dump format anymore.
>>
>> * src/qemu/qemu_driver.c
>>    - rename "getCompressionType" to "getDumpType"
>>    - return -1 on FAILURE
>>
>> ---
>>   src/qemu/qemu_driver.c |   40 +++++++++++++++++++++++++---------------
>>   1 files changed, 25 insertions(+), 15 deletions(-)
> 
> This reverts commit 1b6f13bb7002d by Hu Tao that explicitly falls back
> to RAW on purpose if a compression program cannot be found.  We need
> more justification why we are reverting a prior patch, and consensus on
> the correct behavior, before this can be applied.
> 
This patch was to fix: https://bugzilla.redhat.com/show_bug.cgi?id=669586

IMHO there are two choices:
1) report warning instead of error to fall back to RAW.
2) don't fall back to RAW, report error and return -1, just
   as "qemudDomianSave" does.

I choosed 2).

Regards
Osier