Comment 34 for bug 84591

I've been playing with the Xubuntu 7.04 CD and a 4GB flash stick. I suspect this bug is a 7.04 kernel/module problem. Quite simply, persistence is borked because unionfs isn't loading. (Just type "mount" and you'll see "unionfs on / type (rw)" is missing and you can confirm it with "lsmod | grep unionfs" too.) As a hack, I copied vmlinuz and initrd.gz from a 6.10 CD to /usb and /usb/casper (I guess it must be copied to both places because links don't work in vfat) and persistence worked. Unfortunately, other stuff seems to break with the 6.10 kernel--the LAN is dead on at least one of my live USB hosts and the PS2 mouse is dead on another host. USB keyboard and mouse seem to work. At one point, I couldn't mount the ext3 filesystem on my hard disk, but that problem seems to be mysteriously absent now.

Next I attempted to build unionfs into the kernel, rather than a module, but the build ended with an extended attribute (xattr) conflict with other filesystem modules. At this point, I really don't know how to build a kernel for a live CD anyway. If anyone can point me in the direction of a howto, we may be able to solve this.

-Cal