Comment 15 for bug 1853652

The error in DHCP agent seems that happens due to problem with getting pid value from file. See logs like:

2019-11-22 10:33:39.360 122439 DEBUG neutron.agent.linux.utils [req-a2222313-7fc2-4c99-ab27-5effb69d3cab - - - - -] Unable to access /var/lib/neutron/dhcp/055eac10-2b47-41fd-9b9e-7a932124bf92/pid get_value_from_file /usr/lib/python3.6/site-packages/neutron/agent/linux/utils.py:261

I just sent small patch to neutron to log exactly what was the reason of IOError there so maybe we will know more why this happens. Patch is here: https://review.opendev.org/697035