Comment 2 for bug 454456

Thank you Dylan for your detailed explanations. I have found them very useful in working on bug #520500 (booting iso from stick via grub2 loopback gets stuck on particular crypt-luks partition).

I have now been able to loopback boot from ext4 partitions for a long time. This issue seems to have been solved by http://bazaar.launchpad.net/~ubuntu-installer/lupin/hardy/revision/130#casper/scripts/lupin-helpers, starting from a duplicate (Bug #460740) of your report. I am setting your report to duplicate of this so that it inherits the "fix released" status.

Regards