From 8227950ed55286b6b526b76ba3436cd776ae32ed Mon Sep 17 00:00:00 2001
From: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Date: Wed, 28 Sep 2022 14:43:04 +0200
Subject: [PATCH] Fix staking migration (#12373)
Causing issues on Kusama...
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
---
substrate/frame/staking/src/migrations.rs | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/substrate/frame/staking/src/migrations.rs b/substrate/frame/staking/src/migrations.rs
index 8f37ae30dd0..f2ccb4f8b09 100644
--- a/substrate/frame/staking/src/migrations.rs
+++ b/substrate/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())
}
--
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