Comment 242 for bug 330824

Full acknowledgement!

For me, I installed Kubuntu Jaunty fresh with native ext4 and external backup drive, also ext4. Actually it was because of a system crash in which I lost my complete partition. So I want to have the backup-system working now before I proceed! But I was stuck because of this ext4-bug, system freezed very often!

I'm just a user and didn't want to experiment!! Ext4 is not the default fs on ubuntu I read above, ok but I really regret that I chose this during graphical installation! Sorry that I didn't read the full release notes, I had no idea that it is that experimental!

Anyway, now I'm stuck, as don't want to re-format my disks, especially not for an issue which doesn't occure in mainline kernel. So I decided to tweak the system and get the kernel 2.6.29 (the 2.6.30 seems to have other problems..), following:

http://www.ramoonus.nl/2009/03/24/linux-kernel-2629-installation-guide-for-ubuntu-and-debian-linux/

But this doesn't put it in GRUB, so you have to change your menu.lst and do update-grub and update-initramfs.

Well, no crashes so far, even copying about 30gig. I actually removed the "nodelalloc" mount option, still stable so far.

I really recommend to get a newer kernel ( >=.29), especially because this is just an Ubuntu problem and Ted Ts'o is probably busy fixing more important stuff :) But the ubuntu guys should provide indeed an automatic update for the _really_ unexperienced people!