From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: Re: pygrub and F12 rawhide
Date: Thu, 08 Oct 2009 15:19:02 +0200
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>>> Post-install, is pygrub working for anyone else? I see it get stuck as
>>> follows:
>>
>> What is your host?  Does your e2fsprogs support ext4?
>
> I'm using libfsimage not e2fsprogs.

Internally, libfsimage will most likely use libext2fs, which Red Hat 
distributions place in e2fsprogs-{devel,libs}.  So, if your host is for 
example RHEL 5 or CentOS 5 your pygrub will not support ext4.  On such 
distros ext3 works for me, while ext4 is not supposed to (yet).

Instead, if you compiled xen on your own, make sure you have 
e2fsprogs-devel (or equivalent) installed, otherwise libfsimage will use 
its internal ext2 implementation---which definitely does not work with 
ext4, and I don't know about ext3.

Paolo

ps: Fedora 11 will propose ext3 for /boot and ext4 for other partitions; 
however, F12 defaults to ext4 for everything and can boot from ext4.