action #18980
closed[ltp][openqa][virtio][ppc64le] It appears agetty is not started on the virtio serial console on ppc64le (it can't log into the virtio_console)
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Description
Neither os-autoinst or QEMU throw an error when creating a virtio console device, connecting to its socket or sending data. However no I/O is recorded in QEMU's chardev log, nor is anything received from the SUT through the socket. It is a bit strange that not even data sent by os-autoinst is recorded in the log, although it might never log input data, but appears to under normal operation because echo is enabled on the TTY.
Unlike x86, ppc64le already uses /dev/hvc0 (on the SUT) for the regular serial port whereas virtio console would usually be on this device. However this should probably just mean that it uses /dev/hvc1 instead, os-autoinst would have no problem with this. Maybe SLE's systemd is not configured to start agetty on this device or the virtio_console driver works differently on ppc64le. Both seem quite strange.
This might be a product bug, but I need more information from the SUT to decide. It should just work.
UPDATE: for those who are searching here for OFW: it's ppc detectioni
https://github.com/os-autoinst/os-autoinst-distri-opensuse/pull/4477
(Replace check_var ARCH ppc64le by get_var OFW)
Updated by osukup over 7 years ago
systemd on SLE12SP2+ automatically starts only first found special serial device. On SLE12SP1 and SLE12GA systemd dont start any special serial dev ( and looks more and more like bug in our systemd presets bsc#1037910)
more info http://0pointer.de/blog/projects/serial-console.html
and from look to systemd-getty-generator .. console is started by generator only on:
"hvc0"
"xvc0"
"hvsi0"
"sclp_line0"
"ttysclp0"
"3270!tty1";
so for correct work on ppc64le we need modify SUT image with:
echo "hvc1\n" >> /etc/securetty
systemctl enable /dev/hvc1
systemctl start /dev/hvc1
Updated by pevik over 7 years ago
Do I understand it correctly, that the problem is that serial_terminal.txt is not saved in assets?
Isn't the whole problem caused just by the fact that tests on ppc64le don't use virtio-console by qemu setup?
Because 64bit and aarch64-virtio use it (both https://openqa.suse.de/tests/1058414#settings, https://openqa.suse.de/tests/1059313#settings have VIRTIO_CONSOLE=1, buthttps://openqa.suse.de/tests/1058099#settings doesn't) and they save the serial_terminal.log.
I tested it on ppc64le machine in orthos, with QEMU 2.9, which has virtio-console support.
If I try to clone job VIRTIO_CONSOLE=1 it fails early during logging (no login prompt, fails on timeout):
http://pinotage-4.arch.suse.de/tests/64#step/boot_ltp/4
while login without virtio-console works well:
http://pinotage-4.arch.suse.de/tests/65#step/boot_ltp/3 (NOTE: curl failure - script_output call is caused by something else, see: #20590)
Could be the reason that enabling virtio-console on ppc6le requires changes in the test code that set a tty device?
If so the pull request implementing osukup's idea is useless:
https://github.com/os-autoinst/os-autoinst-distri-opensuse/pull/3350
Updated by pevik over 7 years ago
osukup wrote:
systemctl enable /dev/hvc1
systemctl start /dev/hvc1
Correct commands are (see http://0pointer.de/blog/projects/serial-console.html):
systemctl enable serial-getty@hvc1
systemctl start serial-getty@hvc1
Updated by rpalethorpe over 7 years ago
- Status changed from In Progress to Resolved
- Target version set to Milestone 9
Solved for LTP test runner at least.
Updated by pevik over 7 years ago
- Subject changed from It appears agetty is not started on the virtio serial console on ppc64le (it can't log into the virtio_console) to [ltp][openqa][virtio][ppc64le] It appears agetty is not started on the virtio serial console on ppc64le (it can't log into the virtio_console)
Updated by pvorel almost 6 years ago
After enabling virtio console by default (https://github.com/os-autoinst/os-autoinst/commit/7226ced3391f2fa8276f098ee3b9e6ce50243dc4)
add_serial_console('hvc1'); from tests/kernel/install_ltp.pm should be moved to some common place and called automatically (to be only on single place and don't expect tests add this manually).
Updated by pvorel almost 6 years ago
- Related to action #18860: [qam] SLE12 GA and SLE12SP1 doesnt start virtio_console correctly added
Updated by osukup almost 6 years ago
util-linux on sle12/sle12sp1 rejects root login on any console which isnt listed in /etc/securetty , from SP2 is this file ignored
must be this file updated before using nonstandard consoles (hvc*)