[action] [PR:21992] [dualtor] Fix mux start failure due to pre operation timeout

[mssonicbld]

Why I did it

Mux service is observed not started due to pre operation timeout:

2025 Mar  6 12:39:46.192880 vlab-06 NOTICE switch_hash: 'reload' executing with command: config reload -y
2025 Mar  6 12:40:47.490091 vlab-06 INFO systemd[1]: Starting swss.service - switch state service…
2025 Mar  6 12:40:57.156019 vlab-06 INFO systemd[1]: Starting mux.service - MUX Cable Container…
2025 Mar  6 12:41:22.474031 vlab-06 NOTICE swss#tunnelmgrd: :- doTunnelTask: Tunnel MuxTunnel0 task, op SET
2025 Mar  6 12:42:27.344856 vlab-06 WARNING systemd[1]: mux.service: start-pre operation timed out. Terminating.
2025 Mar  6 12:42:27.346562 vlab-06 WARNING systemd[1]: mux.service: Control process exited, code=killed, status=15/TERM
2025 Mar  6 12:43:11.903374 vlab-06 NOTICE swss#orchagent: :- doDecapTunnelTask: Tunnel MuxTunnel0 added to ASIC_DB.

Two issues:

• The orchagent tunnel creation can takes up to 2mins after reload on kvm && mlnx platforms, so write_standby.py always timeout waiting for the tunnel to be ready.
• The default pre operation timeout is only 90s.

Work item tracking

• Microsoft ADO (number only): 31745242

How I did it

Let's increase the tunnel wait time in write_standby.py to 160s, and make the mux.service pre operation timeout as 180s.

How to verify it

Reload with mux running:

2025 Mar 11 08:07:38.865006 INFO systemd[1]: Starting mux.service - MUX Cable Container...
2025 Mar 11 08:09:52.938199 WARNING write_standby: Applying state to interfaces {'Ethernet0': 'active', 'Ethernet16': 'active', 'Ethernet160': 'active', 'Ethernet168': 'active', 'Ethernet176': 'active', 'Ethernet184': 'active', 'Ethernet192': 'active', 'Ethernet200': 'active', 'Ethernet208': 'active', 'Ethernet216': 'active', 'Ethernet224': 'active', 'Ethernet232': 'active', 'Ethernet24': 'active', 'Ethernet240': 'active', 'Ethernet32': 'active', 'Ethernet40': 'active', 'Ethernet48': 'active', 'Ethernet56': 'active', 'Ethernet64': 'active', 'Ethernet72': 'active', 'Ethernet8': 'active', 'Ethernet80': 'active', 'Ethernet88': 'active'}
2025 Mar 11 08:09:54.159939 INFO systemd[1]: Started mux.service - MUX Cable Container.

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205
• 202211
• 202305
• 202411

Tested branch (Please provide the tested image version)

Description for the changelog

Link to config_db schema for YANG module changes

A picture of a cute animal (not mandatory but encouraged)

[mssonicbld]

Original PR: #21992

[mssonicbld]

/azp run Azure.sonic-buildimage

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[kperumalbfn]

/azp run Azure.sonic-buildimage

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