[PikeZ] ERR syslog message SAI_STATUS_INVALID_PARAMETER about sonic-sairedis HOT 3 CLOSED

do you get this every time ? this is very wired, what configuration do yoy have there, is this with 2 syncds ? is there only one orchagent or 2? also 2 syncds should run in 2 differnt global contexts

from sonic-sairedis.

I get this every time with basic bgp config. PikeZ device has external PHY (Gearbox), then it runs syncd (global context 0) and gbsyncd (global context 1). There is only one orchagent.

Each context creates a redisSai object of RedisRemoteSaiInterface. The redisSai creates a redisChannel object of RedisChannel, which runs a thread RedisChannel::notificationThreadFunction and acts as a consumer of channel "NOTIFICATIONS". Whatever syncd/gbsyncd produces notification event in channel "NOTIFICATIONS", each consumer will be notified. This causes conflict.

From the above, looks it is fdb event from syncd, only the consumer in context 0 should handle it, however another consumer in context 1, having only gearbox switch info, also handles it and causes the above messages. PR #1129 will fix this issue.

from sonic-sairedis.

RedisRemoteSaiInterface is prepared to use multiple syncds so you dont have to instantiate 2 vestions of if, you can do that byusing sairedis SAI global apis, by specyfying SAI_REDIS_SWITCH_ATTR_CONTEXT attribute on create switch operation https://github.com/sonic-net/sonic-sairedis/blob/master/lib/sairedis.h#L227 and by using SAI_REDIS_KEY_CONTEXT_CONFIG in sai_api_initialize, you will also need context_config.json file which will be consumed by 2 syncds running, where it could specify ASIC_DB and GBASCI_DB

from sonic-sairedis.