Picasso Rococo halted after chain upgrade

[JafarAz]

You completed the Parachain Tutorials for your parachain and tested locally?

• Yes, we have successfully tested our chain on rococo-local.

Team Name

Composable Finance

Parachain Name

Picasso

ParaID

2087

Parachain Manager Account

5EyK95UCZaWbD3YUvvQKgaSYeP9L6rhd6ddi25xLt3crPCBX

Is this for a short or long term slot?

Long-term: we have secured a slot on Polkadot or Kusama.

Upload your Genesis Head (genesis state) - Do not submit a compressed file.

Upload your Validation Code (genesis runtime Wasm) - Do not submit a compressed file.

(Optional) Upload your Chain Specification

Anything else we should know?

Whilst testing a runtime upgrade on Picasso rococo, the chain panicked on migration and has now halted.

We need the help of the relaychain maintainer to update the parachain code on the relay.

What are the next steps for us to unbrick our rococo chain?

Register your Rococo parachain details for polkadot-js/apps

• Polkadot-js Apps UI PR completed
  • Available here: {Please fix me}

[paritytech-onboard-rococo-p-chain]

Parachain is now being onboarded.

[AlexD10S]

What is the error?

[JafarAz]

The chain panicked on migration

The latest block shows the following:

parachainSystem.ValidationFunctionApplied The validation function was applied as of the contained relay chain block number.

[dzmitry-lahoda]

@kkast can confirm weather we tested migration on chopstick either (rococo + picasso-rococo configs). afaik we usually do so.

[al3mart]

Based on your issue description, we will need you to share with us the new wasm and head you want us to update the relay storage with, once we have that we can quickly move on 👍

[JafarAz]

Is the plan to revert to some block and the same wasm file for the runtime upgrade we planned?

Or do you need a new genesis wasm and new genesis state files

[kkast]

@al3mart @AlexD10S could you please let us know if it is possible to revert to some of our previous state, or we need to basically repeat the process of onboarding by prodiving new wasm and genesis state?

[JafarAz]

@al3mart hey sir, we just need some clarity on the above to send you the files please

[SBalaguer]

@JafarAz we'll force on the relay chain the chain head and wasm blob that work so that you can continue producing blocks, however you want to continue (genesis, block at height X, whatever you'd like). But we need those two to be able to help out :))

[kkast]

@SBalaguer does the chain head have to be the same as precious, or we need to generate a new one? If it is the old one, is it possible to retrieve in your end, I don't think we kept the head we used initially. Or should we generate as when onboarding from scratch?