From 62c4ef27d7ce99c442339d4868aa75b2edadfb8f Mon Sep 17 00:00:00 2001
From: Ian Kelling <ian@iankelling.org>
Date: Sun, 17 Sep 2023 18:04:11 -0400
Subject: [PATCH] add check for occasional problem

---
 mount-latest-subvol | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/mount-latest-subvol b/mount-latest-subvol
index cddb714..9fd9932 100644
--- a/mount-latest-subvol
+++ b/mount-latest-subvol
@@ -317,6 +317,7 @@ for vol in ${all_vols[@]}; do
   ##### end building up list of bind mounts  ######
 
 
+
   # if latest is already mounted, make sure binds are mounted and move on
   m check-subvol-stale $d
   # populated by check-subvol-stale if stale
@@ -335,6 +336,28 @@ for vol in ${all_vols[@]}; do
     continue
   fi
 
+
+  ##### begin checking for loopback mounts ####
+  found_loop=false
+  for l in $(losetup -ln|awk '{print $6}'); do
+    for dir in $d ${binds[@]}; do
+      if [[ $l == $dir* ]]; then
+        echo "$0: found loopback mount $l. giving up on unmounting $dir"
+        ret=1
+        found_loop=true
+        break
+      fi
+    done
+    if $found_loop; then
+      break
+    fi
+  done
+  if $found_loop; then
+    continue
+  fi
+  ##### end end checking loopback mounts ####
+
+
   ## not using arbtt at the moment
   # if [[ $vol == q ]]; then
   #   ## allow to fail, user might not be logged in
-- 
2.30.2