OlympusConnectionError is reported on the switch.

Juniper unit switch is reporting the following error:

"message":"RpcError(severity: error, bad_element: None, message: file copy of database failed)","name":"OlympusConnectionError"}

We can consider the following steps to move forward with the resolution:

1. Proceed to use the following operational command to release space on the unit.

root@switch> request system storage cleanup member <member id>

2. Then if the issue is still present, you will need to reboot the switch during a MW.

(Reboot has been confirmed as resolution for "OlympusConnectionError", but you can always attempt the first step, before proceeding with reboot)

Note: this "OlympusConnectionError" is seen when having storage issues as well; for that reason, you may probably see the ‘/var partition usage is high’ alarm in some platforms and this error as a consequence of the ‘/var partition usage is high’ alarm.

If you see ‘/var partition usage is high’ alarm, then please also consider the corresponding KB for the alarm:

[EX/QFX] How to troubleshoot ‘/var partition usage is high’

https://supportportal.juniper.net/s/article/EX-QFX-How-to-troubleshoot-var-partition-usage-is-high?language=en_US