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On 08/16/2018 01:57 AM, DJ Delorie wrote:
Hurd doesn't have unshare, so you need to avoid building the container framework there.Is it OK to return UNSUPPORTED for those? I don't think it makes sense to try to work around the whole containerized-test setup if containers are missing.
UNSUPPORTED would work there. If the Hurd maintainers do not like it, we could probably filter out test-containers tests there.
The Red Hat Enterprise Linux 7 kernel doesn't seem to like this combination of flags, even as root: unshare(CLONE_NEWNS|CLONE_NEWUSER|CLONE_NEWPID) = -1 EINVAL (Invalid argument) Is CLONE_NEWPID really required?Yes. You can't mount /proc without it. Don't ask me why ;-)
Can you perform a bind mount of the existing /proc instead? Maybe you can drop the CLONE_NEWPID this way.
If the bind mount doesn't work, I suggest to ask internally what our kernel needs to get this working.
My concern about the over-use of FAIL_UNSUPPORTED and the UNSUPPORTED test status in the container framework remains. Sure, there are some things that can fail due to missing host support, but e.g. a fork file shouldn't lead to UNSUPPORTED, but FAIL.I replaced them all with FAILs. I was trying to keep "failure of the test" separate from "failure of the test harness" but I'm OK with it either way.
It's hard to draw a line. Fork failures in particular tend to leak between tests because of kernel bugs (still unfixed upstream, unfortunately).
Thanks, Florian
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