alpine-zdt-images/nvme/nvme-ebs-links

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#!/bin/sh
[ -x /usr/sbin/nvme ] || exit
case $ACTION in
add|"")
BASE=$(echo $MDEV | sed -re 's/^(nvme[0-9]+n[0-9]+).*/\1/')
PART=$(echo $MDEV | sed -re 's/nvme[0-9]+n[0-9]+p?//g')
until [ -n "$EBS" ]; do
EBS=$(/usr/sbin/nvme id-ctrl "/dev/$BASE" -b 2>/dev/null | dd bs=32 skip=96 count=1 2>/dev/null | tr -d ' ')
done
EBS=${EBS#/dev/}$PART
ln -sf "$MDEV" "${EBS/xvd/sd}"
ln -sf "$MDEV" "${EBS/sd/xvd}"
;;
remove)
for TARGET in sd* xvd*
do
[ "$(readlink $TARGET 2>/dev/null)" = "$MDEV" ] && rm -f "$TARGET"
done
;;
esac