Questions tagged [babe]
Block production protocol
62
questions
0
votes
0
answers
7
views
Why does pallet-babe have a `MaxNominators` configuration?
Going through the pallet again for a project and I can see that it has a config item for MaxNominators which unsurprisingly has the following description:
The maximum number of nominators for each ...
- 3,832
0
votes
0
answers
8
views
How can implement less frequent empty block and instant confirmation for transactions by modifying babe consensus?
async fn propose_with(
self,
inherent_data: InherentData,
inherent_digests: Digest,
deadline: time::Instant,
block_size_limit: Option<usize>,
) -> ...
0
votes
1
answer
15
views
How to make validator online, if it goes offline
I have a solo chain running using BABE consensus. It has 4 validators. I tried to set session keys of one validator by rotating keys. When new session started, it went offline. I am not sure if I made ...
- 557
1
vote
1
answer
22
views
Chain halts after runtime upgrade | Getting `Ignoring empty epoch change.` `Error with block built on`
I have a solo chain using Babe consensus. In my new branch, I implemented OneSessionHandler in one of my pallets. I am using this to collect active validators.
It's working fine if I run chain with my ...
- 557
1
vote
0
answers
32
views
Why does a block in Substrate-based blockchain have no author and no reward points?
We encountered an issue in our Substrate-based blockchain network where a block has no author and no reward points were given to any validator. This block was finalised. The block was an era-...
- 156
2
votes
1
answer
38
views
How to impl FindAuthor<H160> with Babe
I want add pallet-evm in my substrate node. and my substrate node use Babe instead of Aura. How can I Impl FindAuthor whih Babe ?
this is the example of Aura. I want to impl it with Babe
pub struct ...
- 21
3
votes
0
answers
25
views
Difficulty Storing Consensus-Derived Value in Storage: Observing Value in Pallet Log but Not in Storage
I'm trying to store a value obtained from the consensus, specifically sc_consensus_babe::fn import_block. While I can observe the value in the pallet through the log, it doesn't seem to be stored in ...
- 2,080
1
vote
0
answers
12
views
How to debug/test POS, log out the authorityId?
I am trying to customize the POS. But I don't know how to evaluate my algorithm. I want to print out the authority ID (BABE) and block producer ID.
How do I do that? Please give me some leads.
Thank ...
- 125
0
votes
0
answers
60
views
How to convert `AccountId` to `AuthorityId`
699 | acc_vec.push((account_id, userInfo.weight.saturated_into::<u64>()));
| ^^^^^^^^^^ expected `Public`, found associated type
|
...
- 125
1
vote
0
answers
18
views
Which one is ExternalTrigger in BABE?
in this document it mentioned ExternalTrigger. So which pallet could be ExternalTrigger for BABE. and How to implement EpochChangeTrigger?
It also said that pallet-session could be used, but pallet-...
- 125
0
votes
0
answers
16
views
How to update BabeAuthorityWeight and NextAuthorities from custom pallet?
I would like to customize the POS. I did read some article about how to implement that, and used pallet_babe, my custom pallet and also pallet_staking.
I found that in order to update the authorities ...
- 125
1
vote
1
answer
37
views
How to change the NextAuthorities set from custom pallet?
The NextAuthorities is only updated in function enact_epoch_change() in pallet_babe
and this function is called in Trait EpochChangeTrigger (pallet_babe) and OnSessionHandler
so, in the ...
- 125
2
votes
1
answer
58
views
What is difference between pallet-babe and sp-consensus-babe?
Here is sp_consensus_babe https://releases.parity.io/substrate-rustdoc/src/sp_consensus_babe/lib.rs.html#86
and pallet_babe :https://crates.parity.io/src/pallet_babe/lib.rs.html#18-975
What is ...
- 125
1
vote
1
answer
37
views
When I tried to apply BABE in solo chain, I got LightSyncStateExtensionNotFound error
When I tried to apply BABE in solo chain, I got this error
2023-12-27 07:30:39 💻 Operating system: macos
2023-12-27 07:30:39 💻 CPU architecture: aarch64
2023-12-27 07:30:39 📦 Highest known ...
- 41
0
votes
1
answer
39
views
BABE halts at block 100
2023-12-26 11:46:18.019 WARN tokio-runtime-worker babe: Error with block built on 0x54a0fbd3703e9d3311c3f51913714b84fc7b09b143251fcaf826dcdc6cf1e388: Import failed: Expected epoch change to happen at ...
- 1,194
0
votes
1
answer
20
views
Understanding the Concept of "Best Block" in Parachains, Relay Chains, and Solo Chains
I'm currently working to gain a deeper understanding of blockchain technologies, specifically in the context of parachains and relay chains, as well as solo chains. I'm having some confusion regarding ...
- 477
0
votes
1
answer
54
views
Can we use AccountId20 with babe and other pallets?
As frontier now integrate natively the AccountId20 type, I wonder if it is compatible with all other pallets like BABE, Staking, ... Is there a place where we can check it or do we know some ...
- 294
1
vote
1
answer
52
views
How to change POA to POS with babe?
How to change the the consensus of node-template from POA to POS with babe?
- 2,080
2
votes
1
answer
67
views
Facing Issue in integration of POS
I'm integrating the POS in freshly node template. I'm facing this error:
This is the code repository: https://github.com/Aideepakchaudhary/POA-to-POS
Can anyone please help me to solve this issue?
...
- 2,080
1
vote
1
answer
82
views
Node template with POS Babe consensus: Removal of Unnecessary Extra Pallets
Here is the node template with Babe:
https://github.com/paritytech/substrate/blob/6a946fc36d68b89599d7ca1ab03803d10c78468c/bin/node/runtime/src/lib.rs#L1583
The above template is functioning smoothly ...
- 827
0
votes
1
answer
65
views
Error Running Substrate Node: Unsupported or invalid BabeApi version
I am trying to run a Substrate node with a custom chain specification. I used the following command to run the node:
./target/release/substrate \
--base-path /tmp/pikamo \
--chain ./...
- 923
5
votes
1
answer
166
views
How to solve this error: associated type `BlockNumber` not found for `T`?
I have substrate node template with babe and i want to integrate orml-currencies.
I'm using this in cargo.toml:
orml-currencies = { default-features = false, git = "https://github.com/open-web3-...
- 2,080
4
votes
1
answer
51
views
Custom session keys in Chainspec for Mainnet config
I've seen some Substrate repo's where the SessionKeys (Aura, Babe, Grandpa, etc) are used with unchecked_into() .While the stash/controller keys are only used with into().
These are some examples:
...
- 436
0
votes
1
answer
72
views
frontier template upgrade to polkadotv0.9.38 but using Babe instead of Aura
I've upgraded the frontier-node-template to substrate polkadot-v0.9.38, I've fixed all issues in runtime, migrated my code as well.
But since last few days, I'm stuck in converting service.rs file in ...
2
votes
1
answer
475
views
file not found for module `sys`
Geeting following error's how can i fix this error?
error[E0583]: file not found for module `sys`
--> /Users/abubakarmujahid/.cargo/registry/src/github.com-1ecc6299db9ec823/errno-0.3.1/...
- 169
3
votes
3
answers
731
views
How to replace aura with babe?
Subsrate-node-template uses Aura as a default block authoring algorithem. How can one repalace aura with babe?
- 681
1
vote
1
answer
46
views
How to execute reportEquivocation function in babe pallet?
I was trying to execute a function reportEquivocation(equivocationProof, keyOwnerProof)in the babe pallet . I was stuck in filling the parameters for the same.Could anyone guide me about how to fill ...
- 317
9
votes
1
answer
132
views
Session changes on reversion
When reasoning about a particular problem, I realized that I don't know how session changes work with chain reversions. To my knowledge session changes are based on time/slots and not on blocks. So ...
- 295
2
votes
0
answers
81
views
Switching from `Aura` to `Babe` consensus causes error "Incomplete block import pipeline" on genesis block
I am trying to switch from Aura to Babe consensus. After successful building and node start I am getting an error "Block import error: Incomplete block import pipeline.". This happens with ...
3
votes
0
answers
92
views
Switching from Aura to Babe - 'Current state of blockchain has invalid authorities set'
I'm attempting to switch a node from using Aura to Babe by copying the usage of Babe in some public chains.
However when I run multiple nodes together I get the error:
Unable to fetch auxiliary data ...
5
votes
0
answers
49
views
Adhering to size limit of a block
We do track weight during block creation/block import, but weight only cares about execution time and with 2D weights also about storage proof size.
We do keep track of size in propose here but only ...
- 295
3
votes
1
answer
107
views
What happens on invalid blocks?
I was wondering about block import in particular about invalid blocks: What are the consequences of a block being deemed invalid/failing block import - except well for the block not being imported. Is ...
- 295
1
vote
1
answer
106
views
How to implement a production randomness pallet?
Hey valuable community member,
I am currently on a randomness pallet which can be used as a production counterpart to the insecure randomness-collective-flip pallet.
This is my current version:
https:/...
- 543
3
votes
1
answer
72
views
nextAuthorities() output clarification from Babe storage event
Good evening,
I am trying to parse the output hash of nextAuthorities details retrieved by storage function.
I would like to know how to parse the output sent per validator, is it an hashproof ...
- 41
1
vote
1
answer
88
views
How to start a GRANDPA blockchain without any initial voters?
I've tried modifying the repository so initial voters for the grandpa pallet. In doing so, I noticed there are many checks to prevent that modification.
The reason why we do not want any initial ...
- 143
5
votes
1
answer
121
views
BABE: VRF verification fails
We just ran into the following issue on our kintsugi testnet deployment:
[Relaychain] :broken_heart: Verification failed for block 0xdef612b6bd9d3b6a2ff93a1e9310f385b7a8b715f3f368135731772a3c6f0792 ...
- 395
0
votes
1
answer
96
views
How to list waiting validators?
We can list the active set with session::validators() and/or babe::authorities()
How to list waiting validators though?
- 103
1
vote
1
answer
194
views
Is it possible to start a substrate BABE blockchain with no Grandpa authorities and BABE validators?
I'm trying to implement a PoS network on substrate using substrate provided pallets - pallet_session, pallet_staking, pallet_babe, etc. The current Runtime and chain spec implementation is similar to ...
- 143
1
vote
2
answers
246
views
Substrate change node template from PoA to PoS
Is there any documentation on how to change Substrate from PoA to PoS?
0
votes
1
answer
38
views
Are Periodic Grandpa Voter Errors To Be Expected?
We have been losing anywhere from one to three nodes at a time with Grandpa Voter Errors at random block numbers ranging from 1600 to over 183K. Thus far we have not found any configuration in the ...
- 359
0
votes
2
answers
199
views
Babe PoA to NPoS migration
Here's my babe pallet configuration: I suppose that for PoA we want to keep the same
authority set
impl pallet_babe::Config for Runtime {
type EpochDuration = EpochDuration;
type ...
- 171
4
votes
2
answers
293
views
How can I use BABE's randomness in my parachain?
I would like to use BABE's randomness for some on-chain logic. IIUC using BABE inside a parachain's runtime is not recommended good practice because there's no fallback for producing blocks if no ...
- 2,650
0
votes
1
answer
142
views
Node-template for stand-alone blockchains with POS babe consensus
Is there a node-template for babe consensus tracking all the changes and updates as it does to substrate-node-template which follows aura consensus.
For eg., polkadot-v0.9.24 changes are already ...
- 769
3
votes
1
answer
79
views
What prevents a primary staker from holding off staking to wait for a specific outcome they want in BABE?
One of the issues of PoS as far as I understand is the randomness that selects a staker. Ouroboros Praos, and also BABE use VRFs (Verifiable Random Functions) to assign primary and secondary leaders ...
3
votes
1
answer
103
views
Certain validator nodes produce more blocks than other nodes (BABE)
At Ternoa we are observing an interesting phenomenon where a node operator consistently produces more blocks than other node operators. In this case, he has two validator nodes and both nodes produce ...
3
votes
1
answer
53
views
manually creating new blocks with Babe
Currently my consensus engine is Babe, and my finality gadget is Grandpa.
But for testing environments I'm wondering if that there is a way to manually force the engine to produce a new block when I ...
- 31
3
votes
0
answers
83
views
Validator node dropping peers after producing a block followed by a reorg
We are seeing some strange behaviour with some (not all) of our validator nodes. We are using the standard BABE / GRANDPA pallets.
When it is their turn to produce a block, they produce the block, but ...
- 131
1
vote
1
answer
47
views
On using Instantseal on a public standalone network
What are the ramifications of using InstantSeal on a public standalone chain? According to the comments on How to reject empty blocks?, it's quite evident that babe/aura based chains require blocks to ...
- 3,832
5
votes
1
answer
384
views
Is it possible to resurrect babe chains?
I've learned that babe chains, when all validators go offline, stalls and isn't recoverable. But my question is, from a database perspective we have the data in the chainstate folders right? So wouldn'...
- 3,832
1
vote
2
answers
126
views
Grandpa + Babe finality issues
Starting with the node-template, I switched my chains block authoring from Aura to Babe, which compiles fine but does not manage to finalize any blocks. I suspect it's a wrong genesis configuration. ...
- 291