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I have a blockchain running a version of Frontier from september 2021, and want to upgrade it to the latest commits. I'm prepared to do a forkless upgrade, but who do I know if I will need storage migration as well?

2 Answers 2

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As far as I know, you have two ways to do this.

First: you can check these pull-requests include runtime upgrade, and then pick pull requests between your old version and your new version, check those pull requests carefully to see whether there is a pull request introduced storage migration.

Second: you can use try-runtime to see if there are on-runtime-upgrade logs appear.

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try to use the chain in --dev mode, then uploading the new wasm file, if it breaks the chain/stop producing blocks, then you need a storage migration

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