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====== Migrating Debian GNU/Linux 4.0 (etch) or later to an AoE target ====== Install the ''aoetools'' package and a kernel image that includes the ''aoe'' driver, i.e. one of the ''linux-image-2.6.18-*'' drivers that ship with Debian/etch. Create two scripts as shown below * ''/etc/initramfs-tools/hooks/aoetools'' will copy the ''aoe'' kernel module and ''/sbin/aoe-discover'' to the initial ramdisk. * ''/etc/initramfs-tools/scripts/local-top/aoetools'' is copied to the ram disk and run at boot-time, just before the root filesystem is mounted. If the root device string looks like an AoE target, it brings up all recognized Ethernet interfaces and activates the AoE driver. After you have made sure that ''/etc/initramfs-tools/initramfs.conf'' contains the line BUSYBOX=y you can update the initial ramdisk: # update-initramfs -u -k all FIXME Create/update ''/etc/fstab'' FIXME Create/update ''/boot/grub/menu.lst'' You can now [[santransfer|transfer]] the contents of your physical disk to an image stored on the SAN or continue by [[sanexport|making]] the contents of your image available. ==== Hints ==== * If the system hangs before the root device has been mounted, passing ''break=mount'' on the command line will spawn a shell before `scripts/local-top/aoetools' is run. This should allow for further debugging. ===== Configuration files ===== ==== /etc/initramfs-tools/hooks/aoetools ==== <code bash> #!/bin/sh set -e PREREQ="" prereqs() { echo "$PREREQ" } case $1 in prereqs) prereqs exit 0 ;; esac . /usr/share/initramfs-tools/hook-functions [ -x /sbin/aoe-discover ] && copy_exec /sbin/aoe-discover /sbin manual_add_modules aoe </code> ==== /etc/initramfs-tools/scripts/local-top/aoetools ==== <code bash> #!/bin/sh set -e PREREQ="" prereqs() { echo "$PREREQ" } case $1 in prereqs) prereqs exit 0 ;; esac case $ROOT in /dev/etherd/e*) INTERFACES=`awk -F: '/eth[0-9]*:/ { print $1 }' < /proc/net/dev` for i in $INTERFACES; do echo Bringing up interface $i for AoE ifconfig $i up done sleep 5 modprobe aoe aoe-discover ;; esac </code>
