- Why I did it
To solve an issue with upgrade with fast-reboot including FW upgrade which has been introduced since moving to fast-reboot over warm-reboot infrastructure.
As well, this introduces fast-reboot finalizing logic to determine fast-reboot is done.
- How I did it
Added logic to finalize-warmboot script to handle fast-reboot as well, this makes sense as using fast-reboot over warm-reboot this script will be invoked. The script will clear fast-reboot entry from state-db instead of previous implementation that relied on timer. The timer could expire in some scenarios between fast-reboot finished causing fallback to cold-reboot and possible crashes.
As well this PR updates all services/scripts reading fast-reboot state-db entry to look for the updated value representing fast-reboot is active.
- How to verify it
Run fast-reboot and check that fast-reboot entry exists in state-db right after startup and being cleared as warm-reboot is finalized and not due to a timer.
This can save 6 sec for teamd LAG restoration - the time between:
```
Mar 9 13:51:10.467757 r-panther-13 WARNING teamd#teamd_PortChannel1[28]: Got SIGUSR1.
Mar 9 13:52:33.310707 r-panther-13 INFO teamd#teamd_PortChannel1[27]: carrier changed to UP
```
- Why I did it
Optimize warm boot. Specifically reduce the time needed for LAG restoration.
- How I did it
Kill teamd docker after graceful shutdown of teamd processes.
- How to verify it
Run warm reboot.
Signed-off-by: Stepan Blyschak <stepanb@nvidia.com>
Changes to allow starting per asic services like swss and syncd only if the platform vendor codedetects the asic is detected and notified. The systemd services ordering we want is database->database@->pmon->swss@->syncd@->teamd@->lldp@
There is also a requirement that management, telemetry, snmp dockers can start even if all asic services are not up.
Why I did it
For VOQ chassis, the fabric cards will have 1-N asics. Also, there could be multiple removable fabric cards. On the supervisor, swss and syncd containers need to be started only if the fabric-card is in Online state and respective asics are detected by the kernel. Using systemd, the dependent services can be in inactive state.
How I did it
Introduce a mechanism where all ASIC dependent service wait on its state to be published via PMON to REDIS. Once the subscription is received, the service proceeds to create respective dockers.
For fixed platforms, systemd is unchanged i.e. the service bring up and docker creation happens in the start()/ExecStartPre routine of the .sh scripts.
For VOQ chassis platform on supervisor, the service bringup skips docker creation in the start() routine, but does it in the wait()/ExecStart routine of the .sh scrips.
Management dockers are decoupled from ASIC docker creation.
Summary: Move teamd functions to a new service script
Motivation: To segregate teamd functions in one common place. fast-reboot script calls teamd functions that should ideally be replaced by a simple call to a service script.
Changes: New teamd service script and path modification from /usr/bin/teamd.sh to /usr/local/bin/teamd.sh
fast-reboot script (in sonic-utilities) modification (to use new teamd.sh to stop teamd) should follow soon after this change.
Verification: VS image tests.
Signed-off-by: Vaibhav Hemant Dixit <vaibhav.dixit@microsoft.com>
Co-authored-by: heidi.ou@alibaba-inc.com <heidi.ou@alibaba-inc.com>
Co-authored-by: Ying Xie <ying.xie@microsoft.com>
