Le mercredi 02 juillet 2014 20:07:46 Jim Perrin a écrit : > Now that we've got c7 mostly finalized we're starting to look at the > upgrade tool. There are several moving pieces for the upgrade tool that > will need some patching to work properly. > > For anyone who's interesting in taking a dive into the code and helping > out, we have some first-run binaries located at > http://dev.centos.org/centos/6/upg/ with the source living on > git.centos.org > > These binaries will most likely not work, but they should provide a > decent starting point for testing and debugging. I have tried to upgrade an installation of CentOS 6.5 to 7.0, using: sudo redhat-upgrade-tool --force --iso=/home/lrineau/CentOS-7.0-1406-x86_64-Everything/CentOS-7.0-1406-x86_64-Everything.iso I have to use --force, because I did run preupg just before, but redhat-upgrade-tool tells me I did not. My / and /boot and on sort RAID1 partitions (with mdadm). After reboot on the upgrade image, dracut says: [ 189.272697] localhost dracut-initqueue[476]: Warning: Could not boot. [ 189.333232] localhost dracut-initqueue[476]: Warning: /dev/disk/by-uuid/7605c90b-ab65-4165-94d2-94b91d23a5d8 does not exist The corresponding disk is the / on RAID1. I have tried to add "rd.md=1" as option on the kernel line, in grub, but during the boot to the upgrade image, the log says: [ 3.272702] localhost dracut-pre-trigger[369]: rd.md=0: removing MD RAID activation and indeed my RAID partitions are not detected. In the dracut emergency shell, mdadm is able to assemble my RAID with: `mdadm --assemble --scan`, but I do not know how to work around that issue. -- Laurent Rineau http://fedoraproject.org/wiki/LaurentRineau