I'd like to move some folders on my computer to a compressed read/write images, so I could get it to take less disk space on my machine (the folders contain some Mercurial and Git repositories). Because I am not using these repositories daily, I'd prefer to have mounting them manually using FUSE.
So far, I've found how to create an empty btrfs filesystem:
dd if=/dev/zero of=/tmp/empty bs=1 count=0 seek=100M mkfs.btrfs /tmp/empty
How do I mount this folder? When I type
$ fusermount /tmp/empty I get
fusermount: old style mounting not supported.