Package: installation-reports Image version: beta1 DVD amd64 http://cdimage.debian.org/cdimage/wheezy_di_beta1/amd64/iso-dvd/debian-wheezy-DI-b1-amd64-DVD-1.iso Date: 28 August 2012
Although D-I doesn't have menu-based support for btrfs RAID, I was keen to find out if there were any other traps later on in the process. Therefore, I describe the hack I've used to run D-I and install onto btrfs RAID1 The install is done in expert mode, text interface, using VirtualBox with two virtual SATA disks of 10GB each. I successfully proceed through all steps up to partitioning In the partitioning system, I create raw partitions for LVM on each of my two disks sda: /dev/sda1 type 83 (ext4 for /boot) /dev/sda2 swap /dev/sda3 type 8e sdb: /dev/sdb3 type 83 I then do the LVM setup, creating a VG called vg00 with both disks Next, I leave partman running and press Alt-F2 for a shell In the shell, I manually create two LVs: lvcreate -n lv0 -L 10GB vg00 /dev/sda3 lvcreate -n lv1 -L 10GB vg00 /dev/sdb3 and I join them into a btrfs RAID1: mkfs.btrfs -d raid1 -m raid1 /dev/vg00/lv0 /dev/vg00/lv1 Going back to the D-I menu, I try to `Detect Disks' and back into partman, it just doesn't recognise the RAID1, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686117 so a further workaround is needed: I simply ask partman to format /dev/vg00/lv0 alone as btrfs (no RAID) for mount = / (root filesystem) Then I am back in the main menu. Before running the step "Install the base system", I go back to the shell, (alt-f2) umount /target/boot umount /target mkfs.btrfs -d raid1 -m raid1 /dev/vg00/lv0 /dev/vg00/lv1 mount /dev/vg00/lv0 /target mkdir /target/boot mount /dev/sda1 /target/boot Now I go back to the D-I menu and proceed normally from `Install the base system' Note that /etc/fstab is not created correctly. It is necessary to manually edit /target/etc/fstab When it reboots into grub, there is trouble (this may require a fix in update-initramfs tool or in the initramfs scripts provided by btrfs-tools) Loading, please wait... Scanning for Btrfs filesystems mount: mounting /dev/mapper/vg00-lv0 on /root failed: Invalid argument and we are dumped in the BusyBox shell. The first discovery is that /dev/vg00/lv1 is not active: (initramfs) lvm lvm> lvscan ACTIVE /dev/vg00/lv0 inactive /dev/vg00/lv1 lvm> lvchange -ay vg00 ACTIVE /dev/vg00/lv0 ACTIVE /dev/vg00/lv1 lvm> exit (initramfs) btrfs dev scan Scanning for btrfs filesystems (initramfs) mount -o ro /dev/vg00/lv0 /root (initramfs) ls /root At this point, /root looks normal However, trying to continue the init (e.g. typing `exit' or trying to invoke switch_root /root /sbin/init) fails, e.g. Usage: switch_root [-c /dev/console] NEW_ROOT NEW_INIT [ARGS] Only the help text appears, no details about why switch_root is unhappy -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
