We had 2 issues causing vdsm check-patch and check-merge jobs to get stuck.
I fixed the one that caused most trouble:
The other issue may be related to ioprocess, I fixed a related issue:
But I have seen stuck jobs after this change, so the issue may not
be fixed yet.
If you see a stuck vdsm job - job that run more than 15 minutes, please
get me a backtrace:
1. locate the test_runner process pid:
$ ps aux | grep testrunner.py | grep -v grep
nsoffer 26297 82.6 0.9 389592 111144 pts/3 R+ 22:52 0:02
/usr/bin/python ../tests/testrunner.py ...
2. save a backtrace:
gdb attach 26297 --batch -ex "thread apply all py-bt" > py-bt.out