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DescriptionBeniamino Galvani
2020-06-08 09:54:55 UTC
Description of problem:
NM fails to activate slaves when there are multiple stacked devices and autoconnect-slaves=1.
Version-Release number of selected component (if applicable):
1.22.8-4.el8 and upstream master
How reproducible:
50%
Steps to Reproduce:
nmcli connection add type bridge ifname ovirtmgmt con-name ovirtmgmt+ ip4 172.25.1.1/32 connection.autoconnect-slaves 1
nmcli connection add type bond ifname bond0 con-name bond0+ connection.master ovirtmgmt connection.slave-type bridge
nmcli connection add type ethernet ifname eth2 con-name slave+ connection.master bond0 connection.slave-type bond
# simulate reboot
systemctl stop NetworkManager
rm -rf /run/NetworkManager
ip link delete bond0 2> /dev/null
ip link delete ovirtmgmt 2> /dev/null
systemctl start NetworkManager
sleep 4
nmcli device
Actual results:
eth2 is stuck in connecting (prepare)
Expected results:
eth2 successfully connects
Additional info:
I believe the bug was introduced by the fix for bz 1548265.
Comment 1Beniamino Galvani
2020-06-08 09:58:18 UTC
Comment 4Beniamino Galvani
2020-06-16 06:45:17 UTC
(In reply to Vladimir Benes from comment #3)
> This really does not work?
>
> We have at least this test that is covering that:
> https://gitlab.freedesktop.org/NetworkManager/NetworkManager-ci/-/blob/
> master/nmcli/features/bond.feature#L1283
>
> Does it mean we want to set connection.autoconnect-slaves 1 to the top most
> master only?
I think the problem is caused by having both autoconnect-slaves=yes on the topmost master and autoconnect=yes on its slave, which causes a race condition in the lowest slave.
Comment 6Beniamino Galvani
2020-07-06 15:43:05 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (NetworkManager bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2020:4499