“Can not create local file pool file, please verify permissions in dataroot and available disk space”
Ok, you got the above once ... did you check on both ... permissions on dataroot ... which is where your moodledata directory should reside.
Command to see ownerships and permissions ...
cd /path/to/moodledata/ (in example, /path/to/ you replace with true path to)
ls -ld filedir - filedir is where files are stored ... but not in humanly re-cognizable names. That will show ownerships and permissions on that folder ... which should be same recursively on every folder or file contained therein.
Surely you have some interface to server that will show disk space. From ssh the following command should work (depending upon hosting):
df -h
df = disk free and the -h is option to show the numbers in human terms.
'SoS', Ken