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CI: Add ZTS -O option, log Setup Testing Machines step

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Add a -O option to zfs-test.sh to dump debug information on test
timeout.  The debug info includes:

- 30 lines from 'top'
- /proc/<PID>/stack output of process with highest CPU usage
- Last lines strace-ing process with highest CPU usage
- /proc/sysrq-trigger kernel stack traces

All debug information gets dumped to /dev/kmsg (Linux only).

In addition, print out the VM console lines from the "Setup Testing
Machines" step.  We have often see VMs timeout at this step and don't
know why.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #17753
This commit is contained in:
Tony Hutter
2025-09-29 16:32:05 -07:00
committed by Brian Behlendorf
parent 9079f986ae
commit abda34b1c0
5 changed files with 93 additions and 13 deletions
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.github/workflows/scripts/qemu-5-setup.sh
+18 -7
View File
@@ -108,19 +108,30 @@ echo '*/5 * * * * /root/cronjob.sh' > crontab.txt
sudo crontab crontab.txt
rm crontab.txt
# check if the machines are okay
echo "Waiting for vm's to come up... (${VMs}x CPU=$CPU RAM=$RAM)"
for ((i=1; i<=VMs; i++)); do
.github/workflows/scripts/qemu-wait-for-vm.sh vm$i
done
echo "All $VMs VMs are up now."
# Save the VM's serial output (ttyS0) to /var/tmp/console.txt
# - ttyS0 on the VM corresponds to a local /dev/pty/N entry
# - use 'virsh ttyconsole' to lookup the /dev/pty/N entry
for ((i=1; i<=VMs; i++)); do
mkdir -p $RESPATH/vm$i
read "pty" <<< $(sudo virsh ttyconsole vm$i)
# Create the file so we can tail it, even if there's no output.
touch $RESPATH/vm$i/console.txt
sudo nohup bash -c "cat $pty > $RESPATH/vm$i/console.txt" &
# Write all VM boot lines to the console to aid in debugging failed boots.
# The boot lines from all the VMs will be munged together, so prepend each
# line with the vm hostname (like 'vm1:').
(while IFS=$'\n' read -r line; do echo "vm$i: $line" ; done < <(sudo tail -f $RESPATH/vm$i/console.txt)) &
done
echo "Console logging for ${VMs}x $OS started."
# check if the machines are okay
echo "Waiting for vm's to come up... (${VMs}x CPU=$CPU RAM=$RAM)"
for ((i=1; i<=VMs; i++)); do
.github/workflows/scripts/qemu-wait-for-vm.sh vm$i
done
echo "All $VMs VMs are up now."