Ever faced mount: could not find any free loop device?
You’ll face above error only if you are trying to mount more than 8 loop devices.
As a part of my job I often have to install diff version of OEL / CentOS, to install & for yum I usually mount dvd / cd & createrepo. As I am storing iso images I prefer using same iso for yum rather coping all rpm to local hdd.
This is where I often cross limit of 8 loop devices. So howto increase loop devices?
For CentOS 5 / RHEL 5
#enter following line in
options loop max_loop=64
#Run following commands or reboot to take effect.
For CentOS 6 / RHEL 6 / Fedora
#You can use following command to create 256 loop devices.
MAKEDEV -v /dev/loop
#Or followings to create 10
MAKEDEV -v /dev/loop7
MAKEDEV -v /dev/loop8
MAKEDEV -v /dev/loop9
To make loop devices permanent on CentOS6 or latest Fedora, you need to enter MAKEDEV command in /etc/rc.local