MetaRouter eating disk memory

Hi.

My problem is: I import a OpenWRT image to MetaRouter and all work, but when I reset my RB7112Hn, VM disappears and each time I try to create a VM, MetaRouter “eats” ~10Mb from my HDD space.

Now, I want help to know how to free this space. Til now, only reseting configuration, what isn’t a good solution.

I have same problem on RB751G-2HnD 5.22. Sometime after restart virtual machine just disappear.

what routeros version is this?

And it seems this happens on mipsbe routers. This happens with some special image or you can link it on the internet so we can download and theck?

I used this image: http://openwrt.wk.cz/kamikaze/openwrt-mr-mips-rootfs-18961.tar.gz on 5.22.