Hello list, I'm testing out a new system, the idea is to combine 6 hard drives into a single btrfs volume (raid10) (using subvolumes for /, /home, etc). I understand that it is now possible to also have /boot on btrfs (previously impossible because of GRUB). Unfortunately the Debian installer (daily build for wheezy) is unable to create multi-device btrfs volumes. I tried the a normal install and then copy it over to a multi-device btrfs system, afterwards adding the remaining disk: 1) using a single drive to install using ext4 for /boot and btrfs for / 2) after (successful) installation boot from a live cd (ubuntu 12.04 in this case, but it shouldn't really matter) 3) create partitions for btrfs on the other 5 drives using gdisk 4) create a multi-device btrfs filesystem with those partitions, with a subvolume for the root filesystem and for /home 5) copy all the data from the first disk to the new btrfs volume 6) chroot into the rootfs of the new volume, after mounting (-o bind) /dev, /proc and /sys into the mounted system 7) change fstab for the new drives and modify /etc/default/grub 8) run update-grub: this is where things start falling down, I get an error about / not being mounted so grub fails. This is apparently caused by a regression in GRUB [1] (Debian bug #538118). Has anyone attempted such an install before? How should I proceed with this? Kind regards, Steven [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=538118
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