Did some more digging and found that I was able to reproduce on questing-proposed by using the current cloudimg in lxd (attached buildlog). lxc launch ubuntu-daily:questing
I also found that manually running the command fails the same way root@peaceful-earwig:~/openvswitch-3.5.1/tests# cat ../_debian/tests/testsuite.dir/0521/actions.txt | sed 's/^/actions:/' | ./test-dpparse.py cat: ../_debian/tests/testsuite.dir/0521/actions.txt: EPIPE: Broken pipe However, the following commands worked $ cat ../_debian/tests/testsuite.dir/0521/actions.txt | sed 's/^/actions:/' This means ./test-dpparse.py is closing the pipe $ echo "test" | sed 's/^/actions:/' | ./test-dpparse.py Not fundamentally a problem with the script itself // Replaced the contents of actions.txt with "test" and reran the previous comand without errors $ cat ../_debian/tests/testsuite.dir/0521/actions.txt | sed 's/^/actions:/' | ./test-dpparse.py Not a permissions/apparmor error actions.txt was ~524kB. I did a "bisect" on the file size and found that the pipe breaks when the file size of actions.txt exceeds 80kB (81920B). For example: $ yes a | head -c 81920 > actions.txt $ ll actions.txt -rw-r--r-- 1 root root 81920 Jul 23 22:36 actions.txt $ cat actions.txt | sed 's/^/actions:/' | ./test-dpparse.py $ yes a | head -c 81921 > actions.txt $ ll actions.txt -rw-r--r-- 1 root root 81921 Jul 23 22:37 actions.txt $ cat ../_debian/tests/testsuite.dir/0521/actions.txt | sed 's/^/actions:/' | ./test-dpparse.py cat: ../_debian/tests/testsuite.dir/0521/actions.txt: EPIPE: Broken pipe For some reason the python script breaks when the file is larger than 80kB on ubuntu-daily:questing but not ubuntu-daily:plucky Questing is using python3.13.5 and Plucky is using python3.13.3, maybe this has something to do with it. I'll continue investigating tomorrow but at eod now ** Attachment added: "openvswitch_3.5.1-0ubuntu1_amd64_cloudimg.build" https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/2109823/+attachment/5892636/+files/openvswitch_3.5.1-0ubuntu1_amd64_cloudimg.build -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2109823 Title: [SRU] openvswitch 3.3.4 (noble) 3.5.1 (plucky/questing) point release To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/caracal/+bug/2109823/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
