** Description changed:

  I apologize for direct mentioning to the source codes.
  Problem:
-  try_mount() in casper-helpers script doesn't honor the mount-point parameter 
when mount-option != "ro".
-  This is obvious on code, but it wouldn't what it meant to be.
-  I guess,
-    if the device is already mounted on A, and
-      if the indicated mount point of which is the same as previous mounted 
(i.e. A; where_is_mounted() says),
-       do  mount -o remount ...
-    else
-       do  mount -o bind ...
-    whatever the indicated mount options are.
+  try_mount() in casper-helpers script doesn't honor the mount-point parameter 
when mount-option != "ro".
+  This is obvious on code, but it wouldn't what it meant to be.
+  I guess,
+    if the device is already mounted on A, and
+      if the indicated mount point of which is the same as previous mounted 
(i.e. A; where_is_mounted() says),
+       do  mount -o remount ...
+    else
+       do  mount -o bind ...
+    whatever the indicated mount options are.
  
-   This spec suffers in the case, 
-    setting persistence YES, boot media, especially USB, is multi-partitioned, 
and persistence data are on separated part from the base boot image.
-       In that case, find_cow_device() falsely unmount /cdrom (because 
where_is_mounted() says '/cdrom' was
-    previous mount point in the device searching iteration) and gone busybox 
prompt.
-   There might be a fix find_cow_device() itself but, I thought that 
try_mount() is fundamental.
+   This spec suffers in the case,
+    setting persistence YES, boot media, especially USB, is multi-partitioned, 
and persistence data are on separated part from the base boot image.
+       In that case, find_cow_device() falsely unmount /cdrom (because 
where_is_mounted() says '/cdrom' was
+    previous mount point in the device searching iteration) and gone busybox 
prompt.
+   There might be a fix find_cow_device() itself but, I thought that 
try_mount() is fundamental.
  
  A patch attached is a sample to solve this.
+ 
+ Notice:
+ An attached patch was from my own fixed version, and contains 
find_cow_device() modification. Be careful when applying.

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https://bugs.launchpad.net/bugs/1762920

Title:
  casper-helpers:try_mount doesn't honor the mount point

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