InfluxDB data -- where does the data go if you forget to assign disk partition to the service?

Question

Context:

• Working on a Debian 10 server
• Recently collected data in InfluxDB on this server; forgot to mount the service to disk partition
• A day after data collection started, the server crashed because /var directory was at a use% of 100%; I'm assuming all the InfluxDB went into this directory and in turn, the directory filled up and the server crashed, as a result
• To prevent this from happening in the future......assigned the service to a disk partition, as I should have to begin with

Current Issue:

• Using the "df-h" output.....cannot seem to knock the "/var" directory use% below 99%

Attempted Resolutions:

• Rotated and deleted logs from the server

• Deleted logs without rotating as a pre-requisite

• Emptied the biggest sub-directories within the /var directory

Questions:

• None of the contents I have been able to find -- "hidden" or otherwise -- or delete from the /var directory have had any InfluxDB-related data.....where could I find data collected pre-mounting-service-to-disk? Thinking deleting this data will aid in dropping the /var disk utilization below 99%.

Any insight into the above scenario or questions would be much appropriate. Please let me know if there any questions pertaining to the question or scenario.