action #104077
Updated by livdywan over 2 years ago
## Observation
https://openqa.suse.de/tests/7857824/logfile?filename=autoinst-log.txt shows
```
[2021-12-15T16:37:40.022513+01:00] [info] ::: backend::baseclass::die_handler: Backend process died, backend errors are reported below in the following lines:
Can't syswrite(IO::Socket::UNIX=GLOB(0x558d9dd5cb68), <BUFFER>): Broken pipe at /usr/lib/os-autoinst/backend/qemu.pm line 985
backend::qemu::syswrite(IO::Socket::UNIX=GLOB(0x558d9dd5cb68), "{\"execute\":\"query-status\"}\x{a}") called at /usr/lib/os-autoinst/backend/qemu.pm line 985
backend::qemu::handle_qmp_command(backend::qemu=HASH(0x558d9f2f1220), HASH(0x558d9ed9f280), "fatal", 1) called at /usr/lib/os-autoinst/backend/qemu.pm line 204
backend::qemu::_wait_while_status_is(backend::qemu=HASH(0x558d9f2f1220), qr(migrate)u, 300, "Timed out while loading snapshot") called at /usr/lib/os-autoinst/backend/qemu.pm line 459
backend::qemu::load_snapshot(backend::qemu=HASH(0x558d9f2f1220), HASH(0x558d9dd8ba68)) called at /usr/lib/os-autoinst/backend/baseclass.pm line 74
backend::baseclass::handle_command(backend::qemu=HASH(0x558d9f2f1220), HASH(0x558d9dd86b58)) called at /usr/lib/os-autoinst/backend/baseclass.pm line 545
backend::baseclass::check_socket(backend::qemu=HASH(0x558d9f2f1220), IO::Handle=GLOB(0x558d9f25b780)) called at /usr/lib/os-autoinst/backend/qemu.pm line 1060
backend::qemu::check_socket(backend::qemu=HASH(0x558d9f2f1220), IO::Handle=GLOB(0x558d9f25b780), 0) called at /usr/lib/os-autoinst/backend/baseclass.pm line 236
backend::baseclass::do_capture(backend::qemu=HASH(0x558d9f2f1220), undef, 1639581624.84715) called at /usr/lib/os-autoinst/backend/baseclass.pm line 265
eval {...} called at /usr/lib/os-autoinst/backend/baseclass.pm line 265
backend::baseclass::run_capture_loop(backend::qemu=HASH(0x558d9f2f1220)) called at /usr/lib/os-autoinst/backend/baseclass.pm line 128
backend::baseclass::run(backend::qemu=HASH(0x558d9f2f1220), 13, 16) called at /usr/lib/os-autoinst/backend/driver.pm line 70
backend::driver::__ANON__(Mojo::IOLoop::ReadWriteProcess=HASH(0x558d9f8f8040)) called at /usr/lib/perl5/vendor_perl/5.26.1/Mojo/IOLoop/ReadWriteProcess.pm line 326
eval {...} called at /usr/lib/perl5/vendor_perl/5.26.1/Mojo/IOLoop/ReadWriteProcess.pm line 326
Mojo::IOLoop::ReadWriteProcess::_fork(Mojo::IOLoop::ReadWriteProcess=HASH(0x558d9f8f8040), CODE(0x558d9eb1e900)) called at /usr/lib/perl5/vendor_perl/5.26.1/Mojo/IOLoop/ReadWriteProcess.pm line 488
Mojo::IOLoop::ReadWriteProcess::start(Mojo::IOLoop::ReadWriteProcess=HASH(0x558d9f8f8040)) called at /usr/lib/os-autoinst/backend/driver.pm line 71
backend::driver::start(backend::driver=HASH(0x558d9f2b1ef8)) called at /usr/lib/os-autoinst/backend/driver.pm line 38
backend::driver::new("backend::driver", "qemu") called at /usr/bin/isotovideo line 211
main::init_backend() called at /usr/bin/isotovideo line 262
[2021-12-15T16:37:40.022856+01:00] [info] ::: OpenQA::Qemu::Proc::save_state: Saving QEMU state to qemu_state.json
```
A cloned job https://openqa.suse.de/tests/7863925 does not immediately reproduce this problem
## Reproducible
So far only a single occurence was found
## Acceptance criteria
* **AC1:** We at least improved the code a little bit
## Problem
We see a not so helpful stack trace.
## Suggestions
* Look at the exact code section and take a look what could go wrong there, improve test code coverage, logging and error handling.
* Don't try to fix a problem that we can't reproduce :)
* Switch over to transactional upgrades