Add canonical mount options zfs-mount-generator

lib/libzfs/libzfs_mount.c:zfs_add_options provides the canonical
mount options used by a `zfs mount` command. Because we cannot call
`zfs mount` directly from a systemd.mount unit, we mirror that logic
in zfs-mount-generator.

The zed script is updated to cache these properties as well.

Include a mini-tutorial in the manual page, properly substitute
configuration paths in zfs-mount-generator.8.in, and standardize the
Makefile.

Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Richard Laager <[email protected]>
Signed-off-by: Antonio Russo <[email protected]>
Closes #7453 

1 files changed, 8 insertions, 5 deletions

diff --git a/cmd/zed/zed.d/history_event-zfs-list-cacher.sh.in b/cmd/zed/zed.d/history_event-zfs-list-cacher.sh.in
index 348c8d67a..c1513cf3a 100755
--- a/cmd/zed/zed.d/history_event-zfs-list-cacher.sh.in
+++ b/cmd/zed/zed.d/history_event-zfs-list-cacher.sh.in
@@ -44,9 +44,10 @@ case "${ZEVENT_HISTORY_INTERNAL_NAME}" in
       ;;
 
     set|inherit)
-        # Only act if the mountpoint or canmount setting is altered.
-        case "${ZEVENT_HISTORY_INTERNAL_STR}" in
-            canmount=*|mountpoint=*) ;;
+        # Only act if one of the tracked properties is altered.
+        case "${ZEVENT_HISTORY_INTERNAL_STR%%=*}" in
+            canmount|mountpoint|atime|relatime|devices|exec| \
+                readonly|setuid|nbmand) ;;
             *) exit 0 ;;
         esac
       ;;
@@ -60,8 +61,10 @@ esac
 zed_lock zfs-list
 trap abort_alter EXIT
 
-"${ZFS}" list -H -tfilesystem -oname,mountpoint,canmount -r "${ZEVENT_POOL}" \
-    >"${FSLIST_TMP}"
+PROPS="name,mountpoint,canmount,atime,relatime,devices,exec,readonly"
+PROPS="${PROPS},setuid,nbmand"
+
+"${ZFS}" list -H -t filesystem -o $PROPS -r "${ZEVENT_POOL}" > "${FSLIST_TMP}"
 
 # Sort the output so that it is stable
 sort "${FSLIST_TMP}" -o "${FSLIST_TMP}"