Fix staking migration (#12373)

Causing issues on Kusama... Signed-off-by: Oliver Tale-Yazdi <[email protected]> Signed-off-by: Oliver Tale-Yazdi <[email protected]>
boolnetwork · Sep 28, 2022 · 1b1a5e1 · 1b1a5e1
1 parent 01a905e
commit 1b1a5e1
Showing 1 changed file with 8 additions and 4 deletions.
diff --git a/frame/staking/src/migrations.rs b/frame/staking/src/migrations.rs
@@ -40,10 +40,14 @@ pub mod v12 {
 				"Expected v11 before upgrading to v12"
 			);
 
-			frame_support::ensure!(
-				T::HistoryDepth::get() == HistoryDepth::<T>::get(),
-				"Provided value of HistoryDepth should be same as the existing storage value"
-			);
+			if HistoryDepth::<T>::exists() {
+				frame_support::ensure!(
+					T::HistoryDepth::get() == HistoryDepth::<T>::get(),
+					"Provided value of HistoryDepth should be same as the existing storage value"
+				);
+			} else {
+				log::info!("No HistoryDepth in storage; nothing to remove");
+			}
 
 			Ok(Default::default())
 		}