democratic-csi/docker/iscsiadm

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#!/bin/bash
iscsiadm_host_strategy=$([ $ISCSIADM_HOST_STRATEGY ] && echo $ISCSIADM_HOST_STRATEGY || echo "chroot")
echo "using $iscsiadm_host_strategy strategy"
case $iscsiadm_host_strategy in
chroot)
# https://engineering.docker.com/2019/07/road-to-containing-iscsi/
chroot /host /usr/bin/env -i PATH="/usr/sbin:/usr/bin:/sbin:/bin" iscsiadm "${@:1}"
;;
nsenter)
# https://github.com/siderolabs/extensions/issues/38#issuecomment-1125403043
iscsid_pid=$(for proc in /proc/*/cmdline; do grep -q "iscsid -f" <<< $(cat $proc 2>/dev/null | tr "\0" " ") && echo $(basename $(dirname $proc)) && break; done)
if [ "$iscsid_pid" = "" ]; then
echo "could not find the iscsid process"
exit 1
fi
nsenter --mount="/proc/${iscsid_pid}/ns/mnt" --net="/proc/${iscsid_pid}/ns/net" -- /usr/local/sbin/iscsiadm "${@:1}"
;;
*)
echo "$iscsiadm_host_strategy is not a valid strategy, choose either 'chroot' or 'nsenter'"
exit 1
;;
esac