diff --git a/build_debian.sh b/build_debian.sh index ff86cb22de..22cbef494f 100755 --- a/build_debian.sh +++ b/build_debian.sh @@ -123,6 +123,10 @@ sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/arista- sudo cp files/initramfs-tools/mke2fs $FILESYSTEM_ROOT/etc/initramfs-tools/hooks/mke2fs sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/hooks/mke2fs +# Hook into initramfs: rename the management interfaces on arista switches +sudo cp files/initramfs-tools/arista-net $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/arista-net +sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/arista-net + ## Hook into initramfs: after partition mount and loop file mount ## 1. Prepare layered file system ## 2. Bind-mount docker working directory (docker aufs cannot work over aufs rootfs) diff --git a/files/initramfs-tools/arista-net b/files/initramfs-tools/arista-net new file mode 100644 index 0000000000..1fbe4838ad --- /dev/null +++ b/files/initramfs-tools/arista-net @@ -0,0 +1,61 @@ +#!/bin/sh + +case $1 in + prereqs) + exit 0 + ;; +esac + +set -e + +# Extract kernel parameters +set -- $(cat /proc/cmdline) +items="" +for x in "$@"; do + case "$x" in + Aboot=*) + aboot_flag="${x#Aboot=}" + ;; + net_*) + item="${x#net_}" + items="$items $item" + ;; + platform=*) + platform_flag="${x#platform=}" + ;; + esac +done + +arista_net_rename() { + local device_path="$1" + local new_name="$2" + local from_name="$3" + for path in $(ls -d /sys/class/net/$from_name* 2>/dev/null); do + local devid="$(realpath "$path/device")" + if echo "$devid" | grep -q "$device_path"; then + local cur_name="${path##*/}" + ip link set "$cur_name" name "$new_name" + return + fi + done +} + +# Iterate over all the net_maX items found in the cmdline two times. +# First time renaming the interfaces to maX. +# The second time renaming them to their final name ethX. +if [ -n "$aboot_flag" -a "$platform_flag" == 'rook' ]; then + for item in $items; do + key="${item%=*}" + value="${item#*=}" + arista_net_rename "$value" "$key" eth + done + for item in $items; do + key="${item%=*}" + value="${item#*=}" + index="${key#ma}" + index="$(( $index - 1 ))" + newKey="eth$index" + arista_net_rename "$value" "$newKey" ma + done +fi +