Saturday 15th November 2008
Kernel loop module now built-in in Fedora 9
Rebooted my build server into the new 2.6.27.5-37.fc9.x86_64 kernel and found that a bunch of loopback-mounted ISO images didn't get mounted, due to running out of loop devices. This is a problem I'd fixed a long time ago by creating a file /etc/modprobe.d/loop containing this line:
options loop max_loop=64
Running lsmod revealed that the loop module wasn't even loaded. It turned out that this kernel update has a new configuration in which the loop module is built-in to the kernel rather than being a module:
$ fgrep LOOP /boot/config-2.6.2* /boot/config-2.6.26.5-45.fc9.x86_64:CONFIG_BLK_DEV_LOOP=m /boot/config-2.6.26.5-45.fc9.x86_64:CONFIG_BLK_DEV_CRYPTOLOOP=m /boot/config-2.6.26.6-79.fc9.x86_64:CONFIG_BLK_DEV_LOOP=m /boot/config-2.6.26.6-79.fc9.x86_64:CONFIG_BLK_DEV_CRYPTOLOOP=m /boot/config-2.6.27.5-37.fc9.x86_64:CONFIG_BLK_DEV_LOOP=y /boot/config-2.6.27.5-37.fc9.x86_64:CONFIG_BLK_DEV_CRYPTOLOOP=m
I don't know if this is going to a long-term change or not since I didn't see anything in the changelog about it, but the fix for now is to add the appropriate option in /boot/grub/grub.conf:
title Fedora (2.6.27.5-37.fc9.x86_64)
root (hd0,1)
kernel /vmlinuz-2.6.27.5-37.fc9.x86_64 ro root=/dev/VgOS/lvroot max_loop=64
initrd /initrd-2.6.27.5-37.fc9.x86_64.img
Local Packages
Final one of the perl module package cleanups: perl-Test-Manifest