From 53670e1fb201cf1d27b01b4bc796ff097f82552d Mon Sep 17 00:00:00 2001
From: Viacheslav Hletenko <v.gletenko@vyos.io>
Date: Wed, 24 Jan 2024 13:41:33 +0000
Subject: T5941: Migration policy delete orphaned interface policy
We can get orphaned interface policy when the policy name was
removed from the interface but the node `policy` still attached
to the interface
For exmaple we have orphaned node policy on interface:
```
set interfaces bonding bond0 vif 995 policy
```
This causes of incorrect migration and we do not see VLANs on
the bonding interface after update.
Delete policy from all interfaces if policy does not exist
---
src/migration-scripts/policy/4-to-5 | 48 ++++++++++++++++++++++++++++++++++++-
1 file changed, 47 insertions(+), 1 deletion(-)
diff --git a/src/migration-scripts/policy/4-to-5 b/src/migration-scripts/policy/4-to-5
index f6f889c35..5b8fee17e 100755
--- a/src/migration-scripts/policy/4-to-5
+++ b/src/migration-scripts/policy/4-to-5
@@ -1,6 +1,6 @@
#!/usr/bin/env python3
#
-# Copyright (C) 2022 VyOS maintainers and contributors
+# Copyright (C) 2022-2024 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
@@ -37,7 +37,53 @@ base4 = ['policy', 'route']
base6 = ['policy', 'route6']
config = ConfigTree(config_file)
+
+def delete_orphaned_interface_policy(config, iftype, ifname, vif=None, vifs=None, vifc=None):
+ """Delete unexpected policy on interfaces in cases when
+ policy does not exist but inreface has a policy configuration
+ Example T5941:
+ set interfaces bonding bond0 vif 995 policy
+ """
+ if_path = ['interfaces', iftype, ifname]
+
+ if vif:
+ if_path += ['vif', vif]
+ elif vifs:
+ if_path += ['vif-s', vifs]
+ if vifc:
+ if_path += ['vif-c', vifc]
+
+ if not config.exists(if_path + ['policy']):
+ return
+
+ config.delete(if_path + ['policy'])
+
+
if not config.exists(base4) and not config.exists(base6):
+ # Delete orphaned nodes on interfaces T5941
+ for iftype in config.list_nodes(['interfaces']):
+ for ifname in config.list_nodes(['interfaces', iftype]):
+ delete_orphaned_interface_policy(config, iftype, ifname)
+
+ if config.exists(['interfaces', iftype, ifname, 'vif']):
+ for vif in config.list_nodes(['interfaces', iftype, ifname, 'vif']):
+ delete_orphaned_interface_policy(config, iftype, ifname, vif=vif)
+
+ if config.exists(['interfaces', iftype, ifname, 'vif-s']):
+ for vifs in config.list_nodes(['interfaces', iftype, ifname, 'vif-s']):
+ delete_orphaned_interface_policy(config, iftype, ifname, vifs=vifs)
+
+ if config.exists(['interfaces', iftype, ifname, 'vif-s', vifs, 'vif-c']):
+ for vifc in config.list_nodes(['interfaces', iftype, ifname, 'vif-s', vifs, 'vif-c']):
+ delete_orphaned_interface_policy(config, iftype, ifname, vifs=vifs, vifc=vifc)
+
+ try:
+ with open(file_name, 'w') as f:
+ f.write(config.to_string())
+ except OSError as e:
+ print("Failed to save the modified config: {}".format(e))
+ exit(1)
+
# Nothing to do
exit(0)
--
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