Bug 1468443 - VLAN interfaces are not removed correctly in Network Configuration
VLAN interfaces are not removed correctly in Network Configuration
Status: NEW
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: anaconda (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
: rc
: ---
Assigned To: Anaconda Maintenance Team
Release Test Team
Depends On:
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Reported: 2017-07-07 02:45 EDT by Denis Silakov
Modified: 2017-07-07 06 EDT (History)
0 users

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Attachments (Terms of Use)
Removed interface is still visible when choosing a parent for a new one (102.23 KB, image/png)
2017-07-07 02:47 EDT, Denis Silakov
no flags Details
Potential patch (775 bytes, patch)
2017-07-07 06:01 EDT, Denis Silakov
no flags Details | Diff

  None (edit)
Description Denis Silakov 2017-07-07 02:45:19 EDT
Description of problem:
In the Network settings, if I add VLAN interface, then remove it and then add again with the same id - it doesn't appear in the list. Sometimes anaconda crashes when adding it again.

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

How reproducible:
Impossibility to re-add interface with the same ID - always. Crashes - rare.

Steps to Reproduce:
1. In the beginning of RHEL installation, go to Network Settings and add VLAN interface. It appears in the list of interfaces.
2. Remove this interface from the list by clicking "-" button
3. Try to add interface with the same id again.

Actual results:
The interface doesn't appear in the list.

Note that when adding interface again, the old one (which we removed) is still visible in the "parent interface" drop-down box.

Sometimes anaconda crashes with "AttributeError: 'NoneType' object has no attribute 'get_iface'". Though this happens rarely, can't reproduce this right now to provide a full traceback. Though it looks to fail in pyanaconda/ui/gui/spokes/network.py at the following line:

log.debug("network: GUI, not adding connection %s, already have %s for device %s", uuid, existing_dev_cfg.con_uuid, existing_dev_cfg.device.get_iface())

Expected results:

Additional info:
Comment 2 Denis Silakov 2017-07-07 02:47 EDT
Created attachment 1295189 [details]
Removed interface is still visible when choosing a parent for a new one

We have added "VLAN connection 1" and then removed it, but when adding a new VLAN interface 'enp0s3.0 (via "VLAN connection 1")' is still somehow available.
Comment 3 Denis Silakov 2017-07-07 06:01 EDT
Created attachment 1295250 [details]
Potential patch

This patch makes anaconda work better, but I am not sure if it is perfect - if "dev_cfg" is left from the previous attempt to add the device, then configuration parameters from it will be likely reused for the new attempt to add the same interface.

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