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11 votes
2 answers
164 views

What's the best way to compute square root in Substrate?

I'm working on a quadratic voting function, and I'm trying to use a function like square root. There is no square root function in sp that I could find. What is the best way to do this?
Jake Hemmerle's user avatar
8 votes
3 answers
198 views

Node startup message missing after upgrade to Polkadot v0.9.23

After upgrading to Polkadot v0.9.23 from v0.9.16, I am missing the default "start up" message (WS/RPC connections, hardware, para-id etc, see below) when initiating the node client, both for ...
0x5hmoo's user avatar
  • 189
5 votes
1 answer
88 views

How is the logging CLI implemented in substrate?

Often I've used the flags like -lruntime=debug or -lparachain=debug without really understanding how they work. I know that the env_logger crate allows you to specify which crates to emit log messages ...
Purple_Turtle's user avatar
3 votes
1 answer
192 views

How to log in try-runtime?

#[cfg(feature = "try-runtime")] fn pre_upgrade() -> Result<Vec<u8>, &'static str> { log::info!("Pre-check account: {ERROR_ACCOUNT}"); let a = ...
AurevoirXavier's user avatar
3 votes
1 answer
126 views

How to see the hardware benchmark results?

Substrate has introduced a flag called --no-hardware-benchmarks to disable automatic hardware benchmarks. This implies if the flag is not set, the benchmark should run automatically at startup and ...
Alex Sed's user avatar
  • 580
3 votes
2 answers
98 views

How can I add logs to the runtime for debugging since `--execution native` has been removed?

The node always uses on-chain wasm for execution. How can I add new logs to debug the production chain?
AurevoirXavier's user avatar
3 votes
3 answers
1k views

1010: Invalid Transaction: Transaction has a bad signature

I am getting this error on the block explorer "Extrinsics" tab the moment I add a debug related code into a Hello pallet into the node-template repo. E.g: #[pallet::call_index(0)] #[pallet::...
abhi3700's user avatar
  • 131
3 votes
1 answer
57 views

Substrate Node wont restart

We are running a substrate node in testing/development and the server ran out of disk space. We cleared up space by deleting the log files and now the node wont start. Service(Client(RuntimeApiError(...
donkeydonkey's user avatar
3 votes
1 answer
92 views

Extrinsic execution time traces not showing up in node logs

I am trying to achieve logging of extrinsic execution time traces on parachain nodes i run myself during block import. I'm doing this through tracing instead of by weights so that I can collect data ...
Garandor's user avatar
  • 121
2 votes
1 answer
54 views

The log no longer has [Parachain] and [RelayChain] tags

this is the normal log: When I upgraded to version 22, the log was missing the tags: and there is no problem with the code for sc_tracing: /// Start a node with the given parachain `Configuration` ...
99kies's user avatar
  • 753
1 vote
0 answers
51 views

What does this log message from a collator node mean?

What does this log message from a collator node mean? Is it bad, should it be fixed or ignored? Error: Service(Client(Backend("Invalid argument: Column families not opened: col12, col11, col10, ...
Simson's user avatar
  • 1,201
1 vote
1 answer
60 views

No output from `try-runtime`

When running try-runtime I do not get any logs/output. Even when specifying explicitly RUST_LOG=runtime=trace,try-runtime::cli=trace,executor=trace, still there is silence. However, in case of failure ...
pmikolajczyk41's user avatar
0 votes
1 answer
195 views

How to print color log in terminal with no_std requirement?

I tried to use ansi_term to print logs because it is used in the Substrate repository for logging: https://github.com/paritytech/substrate/blob/fece0657f20e15df94be5833b164dfacd44823eb/client/...
Russo's user avatar
  • 1,193
0 votes
1 answer
23 views

What does `Failed to promote during pruning` mean exactly? Why might one be seeing that in their node logs?

Seems to rise from substrate/client/transaction-pool/src/graph/base_pool.rs but there's a lot going on there. Why might this warning be hit? How can it be resolved?
Kyle's user avatar
  • 311