Normal ext4 partitions aren't flexible at resizing so I decided to install an Operating System (OS) on a image file instead:

```bash
truncate --size=20G storage.img 
mkfs.ext4 storage.img
mount -o loop storage.img /mnt/new_OS
# > Proceed to install OS on /mnt/new_OS
```

My question is, now that I'm using an ext4 filesystem `storage.img` hosted in another filesystem `/home/` (i.e. nested filesystems), would it decrease performance? 

*Note: I've also asked the question on StackOverflow so that people with same question find it easier: https://unix.stackexchange.com/questions/806881/performance-of-nested-filesystems*