From 032d4facca982f632c56f0b1ff3214e6cbb4fc29 Mon Sep 17 00:00:00 2001
From: Daniel Hansson <github@hanssonit.se>
Date: Fri, 1 May 2020 01:24:07 +0200
Subject: [PATCH] WIP

---
 static/change-to-zfs-mount-generator.sh | 83 +++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 static/change-to-zfs-mount-generator.sh

diff --git a/static/change-to-zfs-mount-generator.sh b/static/change-to-zfs-mount-generator.sh
new file mode 100644
index 00000000..9ec6890c
--- /dev/null
+++ b/static/change-to-zfs-mount-generator.sh
@@ -0,0 +1,83 @@
+#!/bin/bash
+
+# T&M Hansson IT AB © - 2020, https://www.hanssonit.se/
+
+# https://wiki.archlinux.org/index.php/ZFS#Using_zfs-mount-generator
+# Tested on Ubuntu 20.04
+
+# This script came to life when we were having issues with importing the ZFS pool (ncdata) on Ubuntu 20.04. 
+# After some forum reading and some digging on Github, this is the result.
+# The intention here is to make the import process more robust, and less prune to fail
+# Esentially, changing from źfs-mount.service' to 'zfs-mount-generator' which by many has been working better.
+
+####     ####
+#### WIP ####
+####     ####
+
+# shellcheck disable=2034,2059
+true
+# shellcheck source=lib.sh
+. <(curl -sL https://raw.githubusercontent.com/nextcloud/vm/master/lib.sh)
+
+# Check if root
+root_check
+
+# Needs to be Ubuntu 20.04 and Multiverse
+check_distro_version
+check_multiverse
+
+POOLNAME=ncdata
+
+if [ -z $POOLNAME ]
+then
+    msg_box "It seems like the POOLNAME variable is empty, we can't continue without it."
+
+# Make sure the correct packages are installed
+install_if_not zfs-zed
+
+# Create the dir for this to work
+mkdir -p /etc/zfs/zfs-list.cache
+
+# Enable ZFS Event Daemon(ZED) aka ZEDLET
+if [ -f [/usr/lib/zfs-linux/zed.d/history_event-zfs-list-cacher.sh ]
+then
+    check_command ln -s /usr/lib/zfs-linux/zed.d/history_event-zfs-list-cacher.sh /etc/zfs/zed.d
+else
+    msg_box "/usr/lib/zfs-linux/zed.d/history_event-zfs-list-cacher.sh is missing, aborting!"
+    exit 1
+fi
+
+# Enable and disable services
+# NEEDED:
+systemctl enable zfs-import-cache
+systemctl enable zfs-import.target
+# DISABLE OLD METHOD
+# systemctl disable zfs-mount
+# systemctl disable zfs.target
+# FOR ZEDLET
+check_command systemctl enable zfs-zed.service
+check_command systemctl enable zfs.target
+check_command systemctl start zfs-zed.service
+
+# Activate config
+zfs set canmount=on "$POOLNAME"
+sleep 1
+if [ -z /etc/zfs/zfs-list.cache/"$POOLNAME" ]
+then
+    print_text_in_color $IRed" "/etc/zfs/zfs-list.cache/"$POOLNAME" is emtpy, setting it manually instead."
+    echo $(zfs list -H -o name,mountpoint,canmount,atime,relatime,devices,exec,readonly,setuid,nbmand,encroot,keylocation) > /etc/zfs/zfs-list.cache/"$POOLNAME"
+fi
+
+#
+# In either case it's always better to use UUID instead of the /dev/sdX name, so do that as well
+#
+
+# Get UUID
+if fdisk -l /dev/sdb1
+then
+    UUID_SDB1=$(blkid -o value -s UUID /dev/sdb1)
+fi
+
+# Export / import
+zpool export "$POOLNAME"
+zpool import -d /dev/disk/by-uuid/"$UUID_SDB1" "$POOLNAME"