I am using owncloud server 9.1 on Ubuntu server 14.04.3 LTS.
Today I started getting the message "your storage is almost full (97%)."
I checked the size of the folders I am synchronizing through owncloud and they add up to around 17 GB which is consistent with the "in use" memory shown by the owncloud client.
However on my server, the owncloud folder is taking up 35 GB, which is almost twice the expected space and pretty much all I have.
A couple more details below:
Operating system: Ubuntu server 14.04.3 LTS.
Web server: Apache 2
PHP version: PHP 5.5.9-1ubuntu4.20
ownCloud version (see ownCloud admin page): 9.1
As an additional note, I have the file encryption addon enabled. I understand it is meant to cause a larger disk usage but I hope it's not doubling the file sizes.