I've got CIFS shares mounted through the gui and they are working. I have created and formatted a loop back file with:
dd if=/dev/zero of=/cifs2/router/opt.ext2 bs=1 count=1 seek=64M echo y | mke2fs -L optware /cifs2/router/opt.ext2
but when I try to mount it
mount /cifs2/router/opt.ext2 /opt
it eventually fails out with
mount: can't setup loop device: No space left on device
Which is obviously wrong, how do I fix this?