Re: 'make check-functional' uses lots of disk space in build tree

["Daniel P. Berrangé" <berrange@redhat.com>]

On Fri, Oct 25, 2024 at 12:29:13PM -0300, Philippe Mathieu-Daudé wrote:
> On 25/10/24 10:57, Daniel P. Berrangé wrote:
> > On Fri, Oct 25, 2024 at 02:50:50PM +0100, Peter Maydell wrote:
> > > I notice that with the recent migration to check-functional we
> > > seem to be using a lot of disk space in the build tree: for
> > > one of my build trees
> > >   du -h build/arm-clang/tests/functional/
> > > returns a total of 4.5GB used, for instance, most of which seems
> > > to be guest binary files.
> > > 
> > > Shouldn't something be cleaning these up after a test run?
> > 
> > The big problem seems to be tests/functional/test_aarch64_sbsaref.py
> > which is creating a pair of 256 MB firmware files on every test
> > and not deleting them.
> > 
> > The tests/functional/test_arm_raspi2.py is also uncompressing some
> > archives and not deleting them.
> 
> Some files could be added back to the cache (with the proper hash)
> so we don't need to re-extract or re-create them everytime.

Unless we've seen a significant time penalty from the extraction,
I think we shouldn't complicate our cache handling. Simplicity
is of great value when it comes to debugging problems with tests.

With regards,
Daniel
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