@diosmosis I think there might be a bug which we noticed on cloud as in https://github.com/matomo-org/matomo/blob/4.x-dev/core/CliMulti/RequestParser.php#L63-L96 it’s maybe not checking the instanceId of a matomo anymore when checking if an archive is already running.
Basically, if the current instance defines an instanceId, then Matomo should only consider commands that include the instanceId.
We have at any time eg many “day” archives running but for different --matomo-domain . I wonder if it maybe thinks there’s an archive running but it’s for a different domain.
We used to check for this indirectly here (as the command includes the --matomo-domain) https://github.com/matomo-org/matomo/blob/3.14.1/core/CliMulti.php#L323-L331