Dirk große Osterhues

If you work intensively with virtualisation, vpns and other stuff that makes use of loopback-devices, the default number of 8 in distros like Debian and Ubuntu is pretty low. This article explains how to increase its number:

In /etc/modules change

loop

to

loop max_loop=64

After that, run the following command:

for i in $(seq 0 63); do
    mknod -m0660 /dev/loop$i b 7 $i
    chown root.disk /dev/loop$i
done