[Bug 1415944] Re: adt-virt-qemu hang

[Martin Pitt]

Indeed when you run this, the whole set of processes goes into "T"
state, i. e. it received a SIGSTOP:

martin   23439  0.0  0.1  64656 18396 pts/7    T    17:42   0:00 /usr/bin/python3 -u /usr/bin/adt-run --debug --no-built-binaries --unbuilt-tree /tmp/boottest/scripts/../tests/getpkgsrc -o pkgsrc --apt-pocket=proposed --setup-commands=adt-commands --- qemu /srv/vm/adt-vivid-amd64-cloud.img
martin   23440  0.0  0.0  13264  1804 pts/7    T    17:42   0:00 tee /tmp/adt-fifo-log.c9x0c1vs
martin   23441  0.0  0.0  13264  1984 pts/7    T    17:42   0:00 tee /tmp/adt-fifo-log.c9x0c1vs -a /dev/stderr
martin   23442  0.0  0.0  13044   668 pts/7    T    17:42   0:00 cat /tmp/adt-fifo-log.c9x0c1vs
martin   23443  0.0  0.0  48012 14580 pts/7    T    17:42   0:00 /usr/bin/python3 /usr/bin/adt-virt-qemu /srv/vm/adt-vivid-amd64-cloud.img
martin   23446  8.1  2.2 2209192 359176 pts/7  Tl   17:42   0:13 qemu-system-x86_64 -enable-kvm -m 1024 -smp 1 -localtime -nographic -net user -net nic,model=virtio -monitor unix:/tmp/adt-virt-qemu.sf04xpyf/monitor,server,nowait -serial unix:/tmp/adt-virt-qemu.sf04xpyf/ttyS0,server,nowait -serial unix:/tmp/adt-virt-qemu.sf04xpyf/ttyS1,server,nowait -virtfs local,id=autopkgtest,path=/tmp/adt-virt-qemu.sf04xpyf/shared,security_model=none,mount_tag=autopkgtest -drive file=/tmp/adt-virt-qemu.sf04xpyf/overlay.img,cache=unsafe,if=virtio,index=0 -redir tcp:10022::22
martin   23474  0.0  0.0 120700 12104 pts/7    Tl   17:43   0:00 /usr/bin/python3 /tmp/adt-virt-qemu.sf04xpyf/runcmd env LANG=C.UTF-8 sh -ec awk '/^deb(-src)? .*(ubuntu.com|debian.org|ftpmaster)/ { if ($3 !~ /-/) { $3 = $3"-proposed"; print }}' /etc/apt/sources.list `ls /etc/apt/sources.list.d/*.list 2>/dev/null|| true`  > /etc/apt/sources.list.d/proposed.list

At first I thought running adt-run under "timeout" would cause this, and
suspected some interaction between the timeout program's timer with adt-
run's timeouts; but timeout uses Linux hrtimers and shouldn't get in the
way with adt-run's alarm().

When I run the command that boottest.sh runs manually, it works fine:

+ timeout 600 adt-run --debug --no-built-binaries --unbuilt-tree
/tmp/boottest/scripts/../tests/getpkgsrc -o pkgsrc --apt-pocket=proposed
--setup-commands=adt-commands --- qemu /srv/vm/adt-vivid-amd64-cloud.img

So we need to find out what causes adt-run to get STOPed.

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https://bugs.launchpad.net/bugs/1415944

Title:
  adt-virt-qemu hang

Status in autopkgtest package in Ubuntu:
  New

Bug description:
   $ mkdir tmp
   $ adt-buildvm-ubuntu-cloud -v -r vivid
   $ bzr branch lp:~canonical-ci-engineering/ubuntu-test-cases/boottest
  $ export ADT_VIRT="adt-virt-qemu ./adt-vivid-amd64-cloud.img"
  $ boottest/scripts/boottest.sh vivid libpng

  This ends with:

  adt-run [15:40:11]: version 3.9.3-1~1034~ubuntu14.04.1
  adt-run: DBG: $ vserver: adt-virt-qemu /home/vila/ci/adt-vivid-amd64-cloud.img
  adt-run: DBG: got reply from testbed: ok
  adt-run: DBG: testbed open, scratch=None
  adt-run: DBG: sending command to testbed: open
  adt-run: DBG: got reply from testbed: ok /tmp/adt-run.dKQGkT
  adt-run: DBG: sending command to testbed: print-execute-command
  adt-run: DBG: got reply from testbed: ok /tmp/adt-virt-qemu.wuid9js5/runcmd
  adt-run: DBG: sending command to testbed: capabilities
  adt-run: DBG: got reply from testbed: ok revert revert-full-system root-on-testbed isolation-machine reboot suggested-normal-user=ubuntu
  adt-run: DBG: testbed capabilities: ['revert', 'revert-full-system', 'root-on-testbed', 'isolation-machine', 'reboot', 'suggested-normal-user=ubuntu']
  adt-run [15:40:30]: @@@@@@@@@@@@@@@@@@@@ test bed setup
  adt-run: DBG: testbed command ['sh', '-ec', 'awk \'/^deb(-src)? .*(ubuntu.com|debian.org|ftpmaster)/ { if ($3 !~ /-/) { $3 = $3"-proposed"; print }}\' /etc/apt/sources.list `ls /etc/apt/sources.list.d/*.list 2>/dev/null|| true`  > /etc/apt/sources.list.d/proposed.list'], kind short, sout raw, serr pipe, env ['LANG=C.UTF-8']

  The boottest.sh scripts includes a 'timeout 600 adt-run ..." and
  everything gets killed properly after hanging on the above.

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