Re: [Qemu-devel] test-qga failures on Fedora 24

[John Snow]

On 07/06/2016 06:20 PM, Michael Roth wrote:
> Quoting Marc-André Lureau (2016-07-06 16:40:52)
>> Hi
>>
>> ----- Original Message -----
>>> I upgraded to Fedora 24 last Friday before the long (American) weekend.
>>> Probably a bad idea.
>>>
>>> Regardless, test-qga has developed a new symptom on current development
>>> HEAD that I don't know what to make of:
>>>
>>> https://paste.fedoraproject.org/388356/14678205/
>>>
>>> Here's the meat of it:
>>>
>>>   LINK  tests/test-qga
>>> GTESTER tests/test-qga
>>> **
>>> ERROR:/home/bos/jhuston/src/qemu/tests/test-qga.c:266:test_qga_get_fsinfo:
>>> assertion failed ret: GenericError realpath("/sys/dev/block/8:17"): No
>>> such file or directory
>>> GTester: last random seed: R02S9d55aa8939b9bd797279bd3f69d33466
>>> **
>>> ERROR:/home/bos/jhuston/src/qemu/tests/test-qga.c:685:test_qga_blacklist:
>>> assertion failed ret: GenericError realpath("/sys/dev/block/8:17"): No
>>> such file or directory
>>> GTester: last random seed: R02Sb9bc461c2129c284f83033dca27827c6
>>> /home/bos/jhuston/src/qemu/tests/Makefile.include:684: recipe for target
>>> 'check-tests/test-qga' failed
>>> make: *** [check-tests/test-qga] Error 1
>>>
>>>
>>> Any clues as to what's gone awry?
>>>
>>
>>
>> build_guest_fsinfo_for_device() failed, it's probably worth to investigate 
>> why the agent treats this as a fatal error, this would likely happen in a 
>> guest too. Could you try to reproduce in a VM or give clues on your setup to 
>> reproduce it?
>>
> 
> The code assumes (non-virtual) block devices have a symlink at
> /sys/dev/block/<major>:<minor>, maybe this isn't the case in Fedora
> anymore?
> 
> The alternative is that realpath("/sys/dev/block/8:17", NULL) is what's 
> actually
> failing. That call assumes the first argument is a symlink, maybe that's
> not the case on FC24?
> 
> Don't have an fc24 handy, but can check tomorrow.
> 
> 

Good news: The problem went away.

It was likely due to an external XFS drive I have that perhaps didn't
properly register as ejected. I unmounted it and re-mounted it and now
everything's fine.

I'm not sure where it got 8:17, though. I guess mtab was stale?

Well, I learned a thing about test-qga today: If your local system is
weird it will explode and get angry at you for your trouble.

--js