Description of problem: I've upgraded a FC5 Xen guest machine on x86_64 to FC6 using yum. Had to remove some .i386 packages that had .x86_64 equivalents installed, otherwise they conflicted with each other (those were nss_ldap.i386 and redhat-lsb.i386) - then the upgrade proceeded fine. But the guest system wouldn't boot with the new FC6 kernel (generated error when trying to mount the root filesystem, and there were earlier warnings about lack of driver for vbd). It still booted successfully with the previous FC5 kernel. To fix the issue, I had to boot using the FC5 kernel, and manually generate initrd for FC6 kernel, including the xenblk module: mkinitrd --with=xenblk /boot/initrd-2.6.20-1.2952.fc6xen.img 2.6.20-1.2952.fc6xen Version-Release number of selected component (if applicable): mkinitrd-5.1.19.0.3-1
Fedora Core 6 is now end-of-life, so closing this bug out. Please test again on Fedora 7 or later, and open a new bug if your problem persists. Thanks.