> I've been playing with creating a filesystem in a file, mounting it with the
> loopback device, copying files to it, and then unmounting it. In the process
> of doing this, the directory acting as the mount point has become corrupted:
> % ls -l /mnt
> br-xr-S-wx 0 root root 0, 0 Jan 1 1970 /mnt
>
> The loopback filesystem was an ext2 filesystem in a file consisting mostly of
> holes (until I filled it up).
>
> I haven't yet been able to recreate the situation.
>
> In trying to use /dev/loop0 again, I received the error:
> ioctl: LOOP_SET_FD: Device or resource busy
You have to remove a loopback device first (with losetup -d) before you
can recreate it. Umounting doesn't do that.
-Andi
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