My VDI file keeps growing and I don't understand why. VirtualBox support have confirmed this is an Ubuntu Guest OS issue, not a host VB one. (BTW, is this question best answered here, or should I be asking at https://superuser.com ?)
I am running latest VirtualBox (5.1.18) under Windows 7 (Home Premium) 64-bit as Host. Ubuntu 16.04 (latest patches) 64-bit as Guest. VDI file is using dynamically allocate storage up to 100G.
When I used to run Ubuntu 14.04 all seemed reasonable. Recently I have been finding the VDI image keeps growing in size. It has grown from 7G to 14G. (This may not be much to some of you, but with an 8G memory stick for backup it's a problem for me!) I can boot Ubuntu to Unity desktop and then immediately exit, and the image can grow by 0.5G.
In Ubuntu the output from df -h
shows:
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 97G 7.7G 84G 9% /
So that is saying there is an extra 6G beyond Used which has been "lost" compared to Avail. du -h -x -s /
confirms 7.6G used.
- What & where is the extra missing storage?
- Are there known problems here between VirtualBox and Ubuntu 16.04 (14.04 did not seem to have this problem)? I am seeing some posts on the net stating that 16.04 is using excessive desktop memory, though nothing amounting to 6G....