My laptop was refusing outright to start this morning reporting a rather extreme kernel panic before even attempting to mount the encrypted logical volume, which is, of course, exactly what you want to see first thing when you arrive in the office and have no engineer on shift with you to cover things while you sort the insanity out.
Fortunately, a quick flick through Grub and an attempt to boot with an older kernel proved successful and science could begin. Up and running again, I checked apt-get and found that a new linux image and associated packages had failed to configure successfully due to my boot partition being almost full.
# [07:35:43] :) localhost - Kass Laptop # kmar-0185:~ df -h | grep boot /dev/sda1 228M 219M 0 100% /boot
Yep, that would do it. Time to clear out old kernels that are no longer being used. Found a very useful article here on the subject last time something similar (but less blocking last time round) happened.
# [08:20:54] :) localhost - Kass Laptop # kmar-0185:~ uname -r 3.2.0-30-generic # [08:20:58] :) localhost - Kass Laptop # kmar-0185:~ dpkg – list | grep linux-image ii linux-image-3.0.0-19-generic 3.0.0-19.33 Linux kernel ii linux-image-3.2.0-24-generic 3.2.0-24.39 Linux kernel ii linux-image-3.2.0-25-generic 3.2.0-25.40 Linux kernel ii linux-image-3.2.0-26-generic 3.2.0-26.41 Linux kernel ii linux-image-3.2.0-27-generic 3.2.0-27.43 Linux kernel ii linux-image-3.2.0-29-generic 3.2.0-29.46 Linux kernel ii linux-image-3.2.0-30-generic 3.2.0-30.48 Linux kernel iF linux-image-3.2.0-31-generic 3.2.0-31.50 Linux kernel iU linux-image-generic 22.214.171.124.34 Generic Linux kernel # [08:21:11] :) localhost - Kass Laptop # kmar-0185:~ sudo apt-get purge linux-image-126.96.36.199-generic
Rinse and repeat until the old unused images are obliterated, remove the headers associated to them, then re-run the update to latest kernel.
Oh, and tell Grub to update its list of available Kernels.
# [08:32:50] :) localhost - Kass Laptop # kmar-0185:/home sudo update-grub2 Generating grub.cfg ... Found linux image: /boot/vmlinuz-3.2.0-31-generic Found initrd image: /boot/initrd.img-3.2.0-31-generic Found linux image: /boot/vmlinuz-3.2.0-30-generic Found initrd image: /boot/initrd.img-3.2.0-30-generic Found linux image: /boot/vmlinuz-3.2.0-29-generic Found initrd image: /boot/initrd.img-3.2.0-29-generic Found linux image: /boot/vmlinuz-3.0.0-19-generic Found initrd image: /boot/initrd.img-3.0.0-19-generic Found memtest86+ image: /memtest86+.bin done
Job’s a good’un.