Enable non-root read access for zfs via sudo.

010_zfs.sh

@@ -2,10 +2,35 @@
 apt-get install -y dkms busybox-static
 apt-get install -y initramfs-tools dh-autoreconf
 apt-get install -y spl spl-dkms 
-apt-get install -y zfs-dkms zfs-initramfs 
+apt-get install -y zfs-dkms zfs-initramfs zfsutils-linux
 apt-get install -y zfs-zed
 
 # linux default, mount partitions even if non-empty, the no option really only makes sense if the directory being mounted on has been declared as a mount point only and is therefore guaranteed to be empty.
 sed -i "s,^\(DO_OVERLAY_MOUNTS=\).*,\1\'yes\'," /etc/default/zfs
 
+# Allow readonly zfs to non-root users in sudoers (put in place by zfsutils-linux)
+sed -ie 's/^#//' /etc/sudoers.d/zfs
+
+## or change below to change sudo behavior further:
+#cat > /etc/sudoers.d/zfs << 'EOF'
+## Allow read-only ZoL commands to be called through sudo
+## without a password. Remove the first '#' column to enable.
+##
+## CAUTION: Any syntax error introduced here will break sudo.
+##
+## Cmnd alias specification
+#Cmnd_Alias C_ZFS = \
+#  /sbin/zfs "", /sbin/zfs help *, \
+#  /sbin/zfs get, /sbin/zfs get *, \
+#  /sbin/zfs list, /sbin/zfs list *, \
+#  /sbin/zpool "", /sbin/zpool help *, \
+#  /sbin/zpool iostat, /sbin/zpool iostat *, \
+#  /sbin/zpool list, /sbin/zpool list *, \
+#  /sbin/zpool status, /sbin/zpool status *, \
+#  /sbin/zpool upgrade, /sbin/zpool upgrade -v
+#
+## allow any user to use basic read-only ZFS commands
+#ALL ALL = (root) NOPASSWD: C_ZFS
+#EOF
+
 modprobe zfs