Add subnet volume migration to fix try-runtime

pallets/subtensor/src/macros/hooks.rs

@@ -76,7 +76,8 @@ mod hooks {
                 // Migrate to RAO
                 .saturating_add(migrations::migrate_rao::migrate_rao::<T>())
 				// Fix the IsNetworkMember map to be consistent with other storage maps
-				.saturating_add(migrations::migrate_fix_is_network_member::migrate_fix_is_network_member::<T>());
+				.saturating_add(migrations::migrate_fix_is_network_member::migrate_fix_is_network_member::<T>())
+				.saturating_add(migrations::migrate_subnet_volume::migrate_subnet_volume::<T>());
             weight
         }
 

pallets/subtensor/src/migrations/migrate_subnet_volume.rs

@@ -0,0 +1,33 @@
+use super::*;
+use alloc::string::String;
+use frame_support::{traits::Get, weights::Weight};
+
+pub fn migrate_subnet_volume<T: Config>() -> Weight {
+    let migration_name = b"migrate_subnet_volume".to_vec();
+
+    // Initialize the weight with one read operation.
+    let weight = T::DbWeight::get().reads(1);
+
+    // Check if the migration has already run
+    if HasMigrationRun::<T>::get(&migration_name) {
+        log::info!(
+            "Migration '{:?}' has already run. Skipping.",
+            migration_name
+        );
+        return weight;
+    }
+    log::info!(
+        "Running migration '{}'",
+        String::from_utf8_lossy(&migration_name)
+    );
+
+    let mut migrated = 0u64;
+
+    SubnetVolume::<T>::translate::<u64, _>(|_key, old_value| {
+        migrated = migrated.saturating_add(1);
+        Some(old_value as u128) // Convert and store as u128
+    });
+
+    log::info!("Migrated {} entries in SubnetVolume", migrated);
+    weight.saturating_add(T::DbWeight::get().reads_writes(migrated, migrated))
+}

pallets/subtensor/src/migrations/mod.rs

@@ -11,6 +11,7 @@ pub mod migrate_populate_owned_hotkeys;
 pub mod migrate_populate_staking_hotkeys;
 pub mod migrate_rao;
 pub mod migrate_stake_threshold;
+pub mod migrate_subnet_volume;
 pub mod migrate_to_v1_separate_emission;
 pub mod migrate_to_v2_fixed_total_stake;
 pub mod migrate_total_issuance;

pallets/subtensor/src/tests/migration.rs

@@ -5,7 +5,7 @@ use crate::*;
 use codec::{Decode, Encode};
 use frame_support::{
     assert_ok,
-    storage::unhashed::{get_raw, put_raw},
+    storage::unhashed::{get, get_raw, put, put_raw},
     traits::{StorageInstance, StoredMap},
     weights::Weight,
     StorageHasher, Twox64Concat,
@@ -711,3 +711,42 @@ fn test_migrate_rao() {
         );
     });
 }
+
+// SKIP_WASM_BUILD=1 RUST_LOG=debug cargo test --package pallet-subtensor --lib -- tests::migration::test_migrate_subnet_volume --exact --show-output
+#[test]
+fn test_migrate_subnet_volume() {
+    new_test_ext(1).execute_with(|| {
+        // Setup initial state
+        let netuid_1: u16 = 1;
+        add_network(netuid_1, 1, 0);
+
+        // SubnetValue for netuid 1 key
+        let old_key: [u8; 34] = hex_literal::hex!(
+            "658faa385070e074c85bf6b568cf05553c3226e141696000b4b239c65bc2b2b40100"
+        );
+
+        // Old value in u64 format
+        let old_value: u64 = 123_456_789_000_u64;
+        put::<u64>(&old_key, &old_value); // Store as u64
+
+        // Ensure it is stored as `u64`
+        assert_eq!(get::<u64>(&old_key), Some(old_value));
+
+        // Run migration
+        crate::migrations::migrate_subnet_volume::migrate_subnet_volume::<Test>();
+
+        // Verify the value is now stored as `u128`
+        let new_value: Option<u128> = get(&old_key);
+        let new_value_as_subnet_volume = SubnetVolume::<Test>::get(netuid_1);
+        assert_eq!(new_value, Some(old_value as u128));
+        assert_eq!(new_value_as_subnet_volume, old_value as u128);
+
+        // Ensure migration does not break when running twice
+        let weight_second_run =
+            crate::migrations::migrate_subnet_volume::migrate_subnet_volume::<Test>();
+
+        // Verify the value is still stored as `u128`
+        let new_value: Option<u128> = get(&old_key);
+        assert_eq!(new_value, Some(old_value as u128));
+    });
+}

scripts/try-runtime-upgrade.sh

@@ -12,7 +12,7 @@
 set -eou pipefail
 
 runtime_wasm_path="./target/release/wbuild/node-subtensor-runtime/node_subtensor_runtime.compact.wasm"
-live_chain_url="wss://dev.chain.opentensor.ai:443"
+live_chain_url="wss://dev.chain.opentensor.ai"
 snapshot_path=""
 
 parse_args() {
@@ -50,6 +50,7 @@ do_try_runtime() {
 
   eval "try-runtime --runtime $runtime_wasm_path on-runtime-upgrade \
     --no-weight-warnings --disable-spec-version-check --disable-idempotency-checks --checks=all \
+    --blocktime 12000 \
     $chain_state"
 }