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Bug 1679230

Summary: Virtual devices (like ovs bridge) appear as unmanaged after deleting its profile
Product: Red Hat Enterprise Linux 8 Reporter: Edward Haas <edwardh>
Component: NetworkManagerAssignee: Beniamino Galvani <bgalvani>
Status: CLOSED ERRATA QA Contact: Desktop QE <desktop-qa-list>
Severity: medium Docs Contact:
Priority: medium    
Version: 8.1CC: atragler, bgalvani, fgiudici, fpokryvk, lrintel, rkhan, sukulkar, thaller, till, vbenes
Target Milestone: rcFlags: pm-rhel: mirror+
Target Release: 8.1   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-11-05 22:29:15 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1689408, 1701002    
Attachments:
Description Flags
journal output
none
More focused journal output without checkpoint none

Description Edward Haas 2019-02-20 16:19:06 UTC
Created attachment 1536757 [details]
journal output

Description of problem:
Deleting a virtual device profile is supposed to also remove the device.
However, in some cases we see the underlying kernel device being removed but it appears in NM as "unmanaged" (`nmcli dev`).

Example:
# nmcli con
NAME  UUID                                  TYPE      DEVICE
eth1  4f056a0c-c974-486f-8e54-7cc66c005b86  ethernet  eth1  
eth2  d970aa6d-b291-489f-9f2a-9457c9a60e0b  ethernet  eth2  
# nmcli dev
DEVICE         TYPE           STATE      CONNECTION 
eth1           ethernet       connected  eth1       
eth2           ethernet       connected  eth2       
eth0           ethernet       unmanaged  --         
lo             loopback       unmanaged  --         
ovs-br0        ovs-bridge     unmanaged  --         
ovs0           ovs-interface  unmanaged  --         
ovs-port-eth1  ovs-port       unmanaged  --         
ovs-port-ovs0  ovs-port       unmanaged  --         
# ovs-vsctl show
a334d63e-7870-499e-8619-164e68fd82ee
    ovs_version: "2.0.0"

Appeared as part of nmstate integration tests.
Sometimes it has been seen after a checkpoint rollback.

Version-Release number of selected component (if applicable):


How reproducible:
Randomly

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

Comment 2 Edward Haas 2019-02-20 16:40:53 UTC
Debugging with the checkpoint shows that this occurs when this procedure is taking place (part of nmstate tests):
OVS profiles are added in this order:
- internal-interface
- bridge 
- port

Then activating the internal-interface.
The activation fails with "error=nm-manager-error-quark: Master device 'ovs0' can't be activated: Device unmanaged or not available for activation (7)" message.


nmstate logs:

nmclient.py                 77 DEBUG    Executing NM action: func=add_connection_async
connection.py               63 DEBUG    Connection adding succeeded: dev=ovs0
nmclient.py                 77 DEBUG    Executing NM action: func=add_connection_async
connection.py               63 DEBUG    Connection adding succeeded: dev=ovs-br0
nmclient.py                 77 DEBUG    Executing NM action: func=add_connection_async
connection.py               63 DEBUG    Connection adding succeeded: dev=ovs-port-ovs0
nmclient.py                 77 DEBUG    Executing NM action: func=_safe_activate_async
nmclient.py                143 ERROR    NM main-loop aborted: Connection activation failed on connection_id ovs0: error=nm-manager-error-quark: Master device 'ovs0' can't be activated: Device unmanaged or not available for activation (7)


Attaching the logs for this specific case.

Comment 3 Edward Haas 2019-02-20 16:42:01 UTC
Created attachment 1536774 [details]
More focused journal output without checkpoint

Comment 4 Edward Haas 2019-02-20 17:13:08 UTC
Few observations:
- Creating the OVS profiles (bridge, port and internal interface) does not auto-activate them.
- When enforcing an order of their activation to: Bridge, port and internal-interface, it works.

Comment 5 Beniamino Galvani 2019-02-21 17:44:32 UTC
So the problem is that with:

 [device]
 match-device=*
 managed=0

in the configuration, every time a connection for a software device
gets added, the corresponding device is created, in unmanaged state.
This is not limited to ovs connections:

 $ nmcli connection add type bond ifname bond3
 $ nmcli device | grep bond3
 bond3     bond        unmanaged     --

I'm looking into this.

Comment 6 Lubomir Rintel 2019-03-26 14:21:25 UTC
I think that this fixes a similar issue:
https://github.com/freedesktop/NetworkManager/commit/8f2a8a52f0d1f8d82409cc044413629adfd454ab

Comment 12 errata-xmlrpc 2019-11-05 22:29:15 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, 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-2019:3623