Description of problem:

This bug is continuation of unresolved bugs 557426 and 650672, I tested this bug last time against F15 live image and I'm opening this bug against rawhide and I'm willing to test it against rawhide as soon as we have any live images ready. (If there are any rawhide live images at all)

Getting boot error when trying to boot Fedora 15 Live iso image (XFCE SPIN) from grub2. I have iso image on my usb flash disk. Flash disk is formatted to FAT32 filesystem. Grub2 is installed to the mbr on flash disk.

Version-Release number of selected component (if applicable):
Fedora 15 Live iso image (XFCE SPIN)

Steps to Reproduce:

Here is the configuration of booting item for this live fedora 15 iso:

[code]
menuentry "Fedora 15 XFCE" {
 insmod fat
 set isofile="/Fedora-15-i686-Live-XFCE.iso"
 loopback loop $isofile
 linux (loop)/EFI/boot/vmlinuz0 root=live:UUID=1234-ABCD:$isofile rootfstype=auto ro verbose debug boot=EFI/boot iso-scan/filename=$isofile noeject noprompt rd.luks=0 rd.lvm=0 rd.md=0 rd.dm=0
 initrd (loop)/EFI/boot/initrd0.img
}
[/code]


Actual results:

At the end of booting attempt I end up in dracut shell:

[code]
[ 24.6... ] dracut Warning: No root device "live:/dev/disk/by-uuid/1234-ABCD:/Fedora-15-i686-Live-XFCE.iso" found
[/code]

Expected results:

Booting Live Fedora 15 without any problems.
There are no such problems when booting Ubuntu 10.04 this way.

Additional info:
From dracut shell I tried to restore booting process but I was not successful - maybe I'm missing some commands?

[code]
mkdir -p /liveiso
mount /dev/disk/by-uuid/1234-ABCD /root
losetup -f --show /root/Fedora-15-i686-Live-XFCE.iso
#displayed: /dev/loop0
mount -t auto -o -ro /dev/loop0 /liveiso
#image is mounted to /liveiso
exit
#Now I get the same error message - No root device ... found
[/code]