State Trie Migration v1

[TarekkMA]

What does it do?

What important points reviewers should know?

Is there something left for follow-up PRs?

What alternative implementations were considered?

Are there relevant PRs or issues in other repositories (Substrate, Polkadot, Frontier, Cumulus)?

What value does it bring to the blockchain users?

[RomarQ]

Some considerations about state tree migration can be found here: https://forum.polkadot.network/t/state-trie-migration/852/

[github-actions]

Coverage Report

@@                     Coverage Diff                      @@
##           master   tarekkma/state_migration      +/-   ##
============================================================
+ Coverage   79.18%                     79.23%   +0.05%     
  Files         299                        299              
+ Lines       87226                      87602     +376     
============================================================
+ Hits        69065                      69405     +340     
+ Misses      18161                      18197      +36     

Files Changed	Coverage
/pallets/moonbeam-lazy-migrations/src/lib.rs	83.54% (-8.77%)	🔽
/pallets/moonbeam-lazy-migrations/src/tests.rs	99.55% (-0.45%)	🔽
/runtime/common/src/migrations.rs	72.33% (+0.13%)	🔼

Coverage generated Mon Sep 30 23:23:10 UTC 2024

[github-actions]

WASM runtime size check:

Compared to target branch

Moonbase runtime: 2188 KB (no changes) ✅

Moonbeam runtime: 2148 KB (no changes) ✅

Moonriver runtime: 2148 KB (no changes) ✅

Compared to latest release (runtime-3200)

Moonbase runtime: 2188 KB (+228 KB compared to latest release) ⚠️

Moonbeam runtime: 2148 KB (+224 KB compared to latest release) ⚠️

Moonriver runtime: 2148 KB (+224 KB compared to latest release) ⚠️

[pLabarta]

State version upgrade breaks our Zombienet tests because local chainspecs are always generated using the native runtime. There is no easy way to fix this issue, but since changes do not impact the client, we can opt to use the latest release client for this particular upgrade test.

After 3300 is released, Zombienet tests should be changed back and work as expected with the branch built client.