Update origin links on removal

Signed-off-by: mulhern <[email protected]>

src/engine/strat_engine/pool.rs

@@ -1011,6 +1011,12 @@ impl Pool for StratPool {
             }
         }
 
+        for (_, _, fs) in self.thin_pool.filesystems_mut() {
+            if fs.origin().map(|x| removed.contains(&x)).unwrap_or(false) {
+                fs.unset_origin();
+            }
+        }
+
         Ok(SetDeleteAction::new(removed))
     }
 

src/engine/strat_engine/thinpool/filesystem.rs

@@ -426,6 +426,10 @@ impl StratFilesystem {
     pub fn thindev_size(&self) -> Sectors {
         self.thin_dev.size()
     }
+
+    pub fn unset_origin(&mut self) {
+        self.origin = None;
+    }
 }
 
 impl Filesystem for StratFilesystem {