Re: [Qemu-block] [PATCH v4] iotests: Tweak 030 in order to trigger a race condition with parallel jobs

[Alberto Garcia]

On Fri 09 Mar 2018 01:54:31 PM CET, Max Reitz wrote:
> On 2018-03-08 08:44, Alberto Garcia wrote:
>> On Wed 07 Mar 2018 06:54:51 PM CET, Max Reitz wrote:
>>>> v4: Mention that commit 1a63a907507fbbcfaee3f622907ec24 also
>>>>     contributes to solve the original bug (both commits need to
>>>>     reverted in order to reproduce this bug reliably).
>>>>
>>>>     Rewrite the loop that writes data into the images to make it more
>>>>     readable.
>>>
>>> Thanks!  Applied to my block tree:
>>>
>>> https://github.com/XanClic/qemu/commits/block
>>>
>>> (Still took me a couple of attempts to get it to fail both commits
>>> reverted, though...)
>> 
>> Odd, I can reproduce it 100% of the cases. Were you maybe running the
>> tests on tmpfs ?
>
> ...yes? O:-)

Nothing wrong, I do it often, but I used an actual hard drive to
reproduce this bug.

Berto