Questions tagged [cumulus]

Questions about the library used to convert a Substrate chain to a Polkadot Parachain.

Filter by
Sorted by
Tagged with
0 votes
1 answer
12 views

trait `parity_util_mem::malloc_size::MallocSizeOf` is not implemented for `unchecked_extrinsic::UncheckedExtrinsic<Address, Call, Signature, Extra>`

I was trying adding Frontier as a dependency to my parachain project... After fixing a few errors and adding UncheckedExtrinsic & CheckedExtrinsic: pub type UncheckedExtrinsic = ...
user avatar
  • 627
0 votes
1 answer
19 views

error: failed to select a version for `parity-db`

I was trying to add Frontier as a dependency of my parachain(Substrate Cumulus based) project... $ cargo build -r Updating git repository `https://github.com/PNetwork/frontier` Updating ...
user avatar
  • 627
1 vote
1 answer
56 views

How to calculate weight on cumulus

I am a bit confused about this. If I have a pr on Substrate that requires a companion on Cumulus that adds to the weight file for a given pallet, how do I calculate the weight? I can run the benchmark....
user avatar
  • 131
1 vote
1 answer
31 views

Cumulus extrinsic weight

Are the benchmarks run on the same machine in the cumulus repository as the ones in the substrate? That is, is the weight in weights.rs files the same in these two repositories? Edit: The weights in ...
user avatar
  • 131
1 vote
0 answers
32 views

Pending Extrinsic not executed on block producing parachain

I have followed the tutorial and have reached the step where parachain is now producing and finalising block with a local relay chain. Transactions on chain and DMP (teleport asset) all works well. I ...
user avatar
0 votes
1 answer
39 views

Sending assets from parachain to relaychain resulting in asset not found

I am trying to send assets from parachain to relaychain from polkadotXcm extrinsic reserveTransferAssets and teleportAssets in polkadotjs app, but it is giving me Asset Not Found error, I am not sure ...
user avatar
1 vote
1 answer
67 views

parachain-system can not get ParachainInherentData After runtime upgrade

Before this setCode upgrade, our parachain works well. After setCode upgrade, we get the following error log. Jun 02 09:39:36 Parami-AWS-SFO-DANA-01 parami[490]: 2022-06-02 09:39:36 ⚠️ ParachainSystem ...
user avatar
1 vote
1 answer
10 views

Example of MockValidationDataInherentDataProvider usage​

Is there any example of how to use MockValidationDataInherentDataProvider to run a parachain with mock validation? I've been looking all over and can't seem to find any documentation or example of it'...
user avatar
5 votes
1 answer
37 views

What is the current state of Swappable Consensus and Re-Genesis

I've found these two open issues: Re-Genesis #7458 Swappable Consensus #1304 and would be interested if there is more practical guidance on an example basis?
user avatar
1 vote
1 answer
30 views

Why is the collator node producing and finalizing blocks at such a fast rate?

I am reading the Cumulus docs on running a node: https://github.com/paritytech/cumulus#build--launch-a-node Why is it that when I run: ./target/release/polkadot-collator --tmp --chain westmint ...
user avatar
  • 3,840
0 votes
2 answers
37 views

Parachain config for Rococo public test network

How to config a locally tested parachain to connect it to the Rococo public test-network? I mean on the startup phase (before the Rococo Slot Request Form), following the Cumulus tutorial: after ...
user avatar
  • 1
3 votes
1 answer
70 views

How to deploy a parachain node and connect it to an existing relay chain node?

I deployed a relay chain node using the provided docker container: docker run \ --detach \ --name=polkadot \ --volume="$(pwd)/data:/data" \ --network=host \ --entrypoint=...
user avatar
  • 329
6 votes
1 answer
107 views

My parachain has not been able to issue a block after submitting the upgrade transaction

network: rococo live this is my parachain log.
user avatar
  • 581
0 votes
1 answer
51 views

How many collators of a registered parachain must be synchronised with the Rococo relay chain for that parachain to generate and finalize blocks?

I want to determine the minimum amount of collators that a specific parachain that is registered on the Rococo network must have running in order for them to generate and finalize blocks once they ...
user avatar
  • 1,290
-1 votes
1 answer
50 views

XCM message transfer failed. relaychain report `Error: Barrier`

When I was doing cross-chain messaging (parallel chain A to parallel chain B), parallel chain A sent an XCM message (successfully). After receiving the message, the relay chain was supposed to send it ...
user avatar
  • 581
4 votes
1 answer
25 views

How to deregister a parathread?

If I want to de register a parathread I have previously registered, which steps should I follow ? What happens with the deposit ?
user avatar
3 votes
1 answer
30 views

how to specify the node's telemetry name for the relay chain when running a parachain node

when running a parachain, we can specify arguments for the relay chain, by adding a double-dash (--) separator between parachain and relay chain arguments, like so: $ calamari \ --name '🦑 marmara'...
user avatar
  • 312
6 votes
2 answers
28 views

What is head data and how do I get it?

When registering a parachain on a relay-chain you need to provide something called head data (or also referred as genesis state) and wasm. What is this head data and how do I get that?
user avatar
  • 1,641
-3 votes
1 answer
32 views

function or associated item not found in `parachain_info::Pallet<Runtime>`

I referred to parachain_info normally, but couldn't call his get method 717 | Parachain(ParachainInfo::get().into()) | ^^^ function or ...
user avatar
  • 581
8 votes
1 answer
52 views

How to reset a parachain with a new genesis on rococo?

I want to reset a parachain currently active on the rococo testnet. There is documentation on how to register a new parachain. But what do I need to do in order to restart an existing parachain? I ...
user avatar
7 votes
2 answers
128 views

How do I connect my parachain to Rococo?

I have completed the Cumulus tutorial and tested my parachain on rococo-local to work as expected. I would like to connect to the public testnet, but I don't have sudo capabilities to add my parachain....
user avatar
  • 1,427
4 votes
1 answer
31 views

Docker and Substrate with Apple Silicon/M1 Chips

Getting qemu errors when trying to build cumulus/polkadot on the container with the official image FROM docker.io/paritytech/ci-linux:production as builder qemu-x86_64: could not open '/lib64/ld-linux-...
user avatar
13 votes
1 answer
79 views

What is Cumulus?

How does Cumulus relate to Polkadot? What is the difference between the two? Can I launch a chain without Cumulus? Are there any good documentation around the interactions between the two?
user avatar