The logs are seen at random instance and is not frequently reproducible. As per the understanding, these logs don't impact any services


Logs from QFX5K:

user@switch> show log messages | match CHASSISD

Dec 12 21:00:00 2023 switch chassisd[1954]: CHASSISD_IFDEV_RTSLIB_FAILURE: ifdev_create: rtslib_ifdm_add failed (File exists)

Dec 12 21:00:00 2023 switch chassisd[1954]: CHASSISD_IFDEV_CREATE_FAILURE: create_pseudos: unable to create interface device for fti0 (File exists)

Dec 12 21:00:02 2023 switch chassisd[1954]: CHASSISD_IFDEV_RTSLIB_FAILURE: ifdev_create: rtslib_ifdm_add failed (File exists)

Dec 12 21:00:02 2023 switch chassisd[1954]: CHASSISD_IFDEV_CREATE_FAILURE: create_pseudos: unable to create interface device for ip-0/0/0 (File exists)

Logs from QFX10K:
chassisd[22446]: CHASSISD_IFDEV_RTSLIB_FAILURE: ifdev_create: rtslib_ifdm_add failed (File exists)
chassisd[22446]: CHASSISD_IFDEV_CREATE_FAILURE: create_pseudos: unable to create interface device for fti0 (File exists)

Below logs are flooded.

user@switch> show log messages | match CHASSISD

Dec 12 21:00:00 2023 switch chassisd[1954]: CHASSISD_IFDEV_RTSLIB_FAILURE: ifdev_create: rtslib_ifdm_add failed (File exists)

Dec 12 21:00:00 2023 switch chassisd[1954]: CHASSISD_IFDEV_CREATE_FAILURE: create_pseudos: unable to create interface device for fti0 (File exists)

Dec 12 21:00:02 2023 switch chassisd[1954]: CHASSISD_IFDEV_RTSLIB_FAILURE: ifdev_create: rtslib_ifdm_add failed (File exists)

Dec 12 21:00:02 2023 switch chassisd[1954]: CHASSISD_IFDEV_CREATE_FAILURE: create_pseudos: unable to create interface device for ip-0/0/0 (File exists)

The logs are seen flooding but doesn't cause any service impact.
Customer shall consider creating syslog filter to filter out the logs from getting printed under file messages. There is no fix available for this as of date.