"IndexError: list index out of range" on Dell c6400

[Ante Karamatić]

https://github.com/openstack/charm-neutron-openvswitch/blob/master/hooks/neutron_ovs_context.py#L272-L284

The code above expects "cpulist" to be a string of comma separated, dashed CPU ranges. It splits the string into a list at each comma, then iterates through that list of strings again, splitting on the dash symbol. This works fine for CPUs ordered this way..

root@standard:~# cat /sys/devices/system/node/node*/cpulist
0-13,28-41
14-27,42-55

but this throws a type error...

"IndexError: list index out of range"

for CPUs ordered as below because there is no dash symbol to split on....

root@dellc6400:~# cat /sys/devices/system/node/node*/cpulist
0,4,8,12,16,20,24,28,32,36,40,44,48,52
1,5,9,13,17,21,25,29,33,37,41,45,49,53
2,6,10,14,18,22,26,30,34,38,42,46,50,54
3,7,11,15,19,23,27,31,35,39,43,47,51,55

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/568786

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/568786
Committed: https://git.openstack.org/cgit/openstack/charm-neutron-openvswitch/commit/?id=54449e783db89a1ba83a1fa47b9a7ef34756de46
Submitter: Zuul
Branch: master

commit 54449e783db89a1ba83a1fa47b9a7ef34756de46
Author: Ante Karamatic <email address hidden>
Date: Wed May 16 10:45:52 2018 +0200

    Cover more NUMA CPU list types

    In some cases cpulist doesn't contain '-' and lists all
    cores one by one. For this kind of lists, splitting by
    comma will break parse_cpu_list().

    Change-Id: Icc5fcf6408d76fdef34ccb18657624cfe5593f10
    Closes-Bug: #1771527