freenas-proxmox/packaging/DEBIAN-multipath/postinst

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#!/bin/bash
# postinst: truenas-proxmox-multipath install/upgrade script
set -e
INSTALL_DIR="/usr/share/truenas-proxmox-multipath"
PLUGIN_DST="/usr/share/perl5/PVE/Storage/Custom/TrueNASMultipath.pm"
JS_DST="/usr/share/pve-manager/js/truenas-multipath.js"
TPL="/usr/share/pve-manager/index.html.tpl"
SCRIPT_TAG=' <script type="text/javascript" src="/pve2/js/truenas-multipath.js?ver=[% version %]"></script>'
MULTIPATH_CONF="/etc/multipath.conf"
LOG_FILE="/var/log/truenas-proxmox-install.log"
log() {
echo "[truenas-proxmox-multipath] $*" | tee -a "$LOG_FILE"
}
install_plugin() {
log "Installing ${PLUGIN_DST}"
mkdir -p "$(dirname "$PLUGIN_DST")"
cp "${INSTALL_DIR}/TrueNASMultipath.pm" "$PLUGIN_DST"
}
install_ui() {
log "Installing ${JS_DST}"
cp "${INSTALL_DIR}/truenas-multipath.js" "$JS_DST"
if grep -qF 'truenas-multipath.js' "$TPL" 2>/dev/null; then
log "index.html.tpl already has truenas-multipath.js — skipping"
return 0
fi
log "Adding <script> tag to ${TPL}"
sed -i "/pvemanagerlib\.js/a\\${SCRIPT_TAG}" "$TPL"
}
BLOCK_BEGIN="# BEGIN truenas-proxmox-multipath"
BLOCK_END="# END truenas-proxmox-multipath"
# Appends or replaces the tagged TrueNAS device stanza in multipath.conf.
# Safe to call on upgrade — idempotent via BEGIN/END markers.
install_multipath_conf() {
local stanza
stanza=$(cat <<STANZA
${BLOCK_BEGIN}
# Managed by truenas-proxmox-multipath. Do not edit between these markers.
# To customise, remove the package tags and maintain the block yourself.
devices {
device {
vendor "TrueNAS"
product "iSCSI Disk"
path_grouping_policy multibus
path_checker tur
failback immediate
rr_weight uniform
no_path_retry 5
}
}
${BLOCK_END}
STANZA
)
if [ ! -f "$MULTIPATH_CONF" ]; then
log "Creating ${MULTIPATH_CONF} with defaults + TrueNAS device stanza"
printf 'defaults {\n find_multipaths yes\n}\n\n%s\n' "$stanza" > "$MULTIPATH_CONF"
elif grep -qF "$BLOCK_BEGIN" "$MULTIPATH_CONF"; then
log "Updating existing TrueNAS stanza in ${MULTIPATH_CONF}"
# Replace the block between markers (inclusive) with the new stanza
perl -i -0777 -pe \
"s|\Q${BLOCK_BEGIN}\E.*?\Q${BLOCK_END}\E|${stanza}|s" \
"$MULTIPATH_CONF"
else
log "Appending TrueNAS device stanza to existing ${MULTIPATH_CONF}"
# Strip any pre-existing unmanaged devices block to prevent duplicate
# keyword warnings in multipathd (e.g. user had a manual block before install).
if grep -qE '^\s*devices\s*\{' "$MULTIPATH_CONF"; then
log "Removing pre-existing unmanaged devices block from ${MULTIPATH_CONF}"
perl -i -0777 -pe \
's/\n*\ndevices\s*\{(?:[^{}]*|\{[^{}]*\})*\}\n*//gs' \
"$MULTIPATH_CONF"
fi
printf '\n%s\n' "$stanza" >> "$MULTIPATH_CONF"
fi
systemctl enable multipathd 2>/dev/null || true
systemctl start multipathd 2>/dev/null || true
log "multipathd enabled and started"
}
restart_pve_services() {
log "Restarting Proxmox VE services ..."
pvedaemon restart && log "pvedaemon restarted"
pveproxy restart && log "pveproxy restarted"
log "Done. Refresh your Proxmox browser tab."
}
case "$1" in
configure)
log "Configuring truenas-proxmox-multipath (previous version: ${2:-none})"
install_plugin
install_ui
install_multipath_conf
restart_pve_services
;;
abort-upgrade|abort-remove|abort-deconfigure)
;;
*)
echo "$0: called with unknown argument '$1'" >&2
exit 0
;;
esac
exit 0