Linux increase number of loop filesystems allowed to be mounted simultaneously

Posted on in Categories Linux, Linux distribution last updated August 29, 2007

You can mount DVD / CD iso images using loop module under Linux (Sun Solaris UNIX user can try out lofiadm command) . It would be good idea to increase the number of loop filesystems allowed to be mounted simultaneously by adding the following line to /etc/modprobe.conf file:

Task: Set maximum number of loop devices

Open Linux kernel module configuration file using text editor:
# vi /etc/modprobe.conf

Append loop module configuration parameter:
options loop max_loop=256

Where,
=> loop : module name

=> max_loop=256: Maximum number of loop devices (1-256)

This is useful on dedicated installation server. For example internally we have over 5 Linux distro ISO downloaded with new and old version number. We use iso for HTTP or FTP installation over LAN. By increasing limit to max you can avoid problems.

Posted by: Vivek Gite

The author is the creator of nixCraft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on Twitter, Facebook, Google+.

1 comment

  1. Hello. This site is a great source for help in Linux issues. Thanks for all your work.

    Right now I am trying to edit the file /etc/modprobe.conf under Fuduntu (Fedora based distro) but it does no exists and modinfo loop says ERROR: Module loop not found.

    Please, help me.

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