This PR fixes a bug where wrong columns could get processed immediately after a CGC increase.
Scenario:
- The node's CGC increased due to additional validators attached to it (lets say from 10 to 11)
- The new CGC is advertised and new subnets are subscribed immediately, however the change won't be effective in the data availability check until the next epoch (See [this](ab0e8870b4/beacon_node/beacon_chain/src/validator_custody.rs (L93-L99))). Data availability checker still only require 10 columns for the current epoch.
- During this time, data columns for the additional custody column (lets say column 11) may arrive via gossip as we're already subscribed to the topic, and it may be incorrectly used to satisfy the existing data availability requirement (10 columns), and result in this additional column (instead of a required one) getting persisted, resulting in database inconsistency.
Fix Clippy for recently released Rust 1.90 beta. There may be more changes required when Rust 1.89 stable is released in a few days, but possibly not 🤞
While looking at metrics I noticed that `beacon_blobs_from_el_expected` and `beacon_blobs_from_el_received_total` have different buckets, this PR adds more buckets to both (to prepare for Fusaka) and make them both consistent.
Small tweak to `Delayed head block` logging to make it more representative of actual issues. Previously we used the total import delay to determine whether a block was late, but this includes the time taken for IO (and now hdiff computation) which happens _after_ the block is made attestable.
This PR changes the logic to use the attestable delay (where possible) falling back to the previous value if the block doesn't have one; e.g. if it didn't meet the conditions to make it into the attestable cache.
#7647
Introduces a new record in the blobs db `DataColumnCustodyInfo`
When `DataColumnCustodyInfo` exists in the db this indicates that a recent cgc change has occurred and/or that a custody backfill sync is currently in progress (custody backfill will be added as a separate PR). When a cgc change has occurred `earliest_available_slot` will be equal to the slot at which the cgc change occured. During custody backfill sync`earliest_available_slot` should be updated incrementally as it progresses.
~~Note that if `advertise_false_custody_group_count` is enabled we do not add a `DataColumnCustodyInfo` record in the db as that would affect the status v2 response.~~
(See comment https://github.com/sigp/lighthouse/pull/7648#discussion_r2212403389)
~~If `DataColumnCustodyInfo` doesn't exist in the db this indicates that we have fulfilled our custody requirements up to the DA window.~~
(It now always exist, and the slot will be set to `None` once backfill is complete)
StatusV2 now uses `DataColumnCustodyInfo` to calculate the `earliest_available_slot` if a `DataColumnCustodyInfo` record exists in the db, if it's `None`, then we return the `oldest_block_slot`.
#7700
As described in title, the EL already performs KZG verification on all blobs when they entered the mempool, so it's redundant to perform extra validation on blobs returned from the EL.
This PR removes
- KZG verification for both blobs and data columns during block production
- KZG verification for data columns after fetch engine blobs call. I have not done this for blobs because it requires extra changes to check the observed cache, and doesn't feel like it's a worthy optimisation given the number of blobs per block.
This PR does not remove KZG verification on the block publishing path yet.
Closes#7467.
This PR primarily addresses [the P2P changes](https://github.com/ethereum/EIPs/pull/9840) in [fusaka-devnet-2](https://fusaka-devnet-2.ethpandaops.io/). Specifically:
* [the new `nfd` parameter added to the `ENR`](https://github.com/ethereum/EIPs/pull/9840)
* [the modified `compute_fork_digest()` changes for every BPO fork](https://github.com/ethereum/EIPs/pull/9840)
90% of this PR was absolutely hacked together as fast as possible during the Berlinterop as fast as I could while running between Glamsterdam debates. Luckily, it seems to work. But I was unable to be as careful in avoiding bugs as I usually am. I've cleaned up the things *I remember* wanting to come back and have a closer look at. But still working on this.
Progress:
* [x] get it working on `fusaka-devnet-2`
* [ ] [*optional* disconnect from peers with incorrect `nfd` at the fork boundary](https://github.com/ethereum/consensus-specs/pull/4407) - Can be addressed in a future PR if necessary
* [x] first pass clean-up
* [x] fix up all the broken tests
* [x] final self-review
* [x] more thorough review from people more familiar with affected code
The current data column KZG verification buckets are not giving us useful info as the upper bound is too low. And we see most of numbers above 70ms for batch verification, and we don't know how much time it really takes.
This PR improves the buckets based on the numbers we got from testing. Exponential bucket seems like a good candidate here given we're expecting to increase blob count with a similar approach (possibly 2x each fork if it goes well).
Closes:
- https://github.com/sigp/lighthouse/issues/7690
Another checkpoint sync related fix! See issue for a description of the bug.
We fix it by just loading the block root of the `oldest_block_slot`, rather than trying to load the slot prior, which will always fail.
Fix a bug involving checkpoint sync from genesis reported by Sunnyside labs.
Ensure that the store's `anchor` is initialised prior to storing the genesis state. In the case of checkpoint sync from genesis, the genesis state will be in the _hot DB_, so we need the hot DB metadata to be initialised in order to store it.
I've extended the existing checkpoint sync tests to cover this case as well. There are some subtleties around what the `state_upper_limit` should be set to in this case. I've opted to just enable state reconstruction from the start in the test so it gets set to 0, which results in an end state more consistent with the other test cases (full state reconstruction). This is required because we can't meaningfully do any state reconstruction when the split slot is 0 (there is no range of frozen slots to reconstruct).
- #6240
- Bring built-in network configs up to date with latest consensus-spec PeerDAS configs.
- Add `MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS` and use it to determine data availability window after the Fulu fork.
Update `SAMPLES_PER_SLOT` to be number of custody groups instead of data columns. This should have no impact on the current implementation as config currently maintains a `group:subnet:column` ratio of `1:1:1`. **In short, this PR doesn't change anything for Fusaka, but ensures compliance with the spec and potential future changes.**
I've added separate methods to compute sampling columns and custody groups for clarity: `spec.sampling_size_columns` and `spec.sampling_size_custod_groups`
See the clarifications in this PR for more details: https://github.com/ethereum/consensus-specs/pull/4251
N/A
Persist the epoch -> cgc values. This is to ensure that `ValidatorRegistrations::latest_validator_custody_requirement` always returns a `Some` value post restart assuming the `epoch_validator_custody_requirements` map has been updated in the previous runs.
This PR implements some heuristics to check for breaking database changes. The goal is to prevent accidental changes to the database schema occurring without a version bump.
N/A
After the electra fork which includes EIP 6110, the beacon node no longer needs the eth1 bridging mechanism to include new deposits as they are provided by the EL as a `deposit_request`. So after electra + a transition period where the finalized bridge deposits pre-fork are included through the old mechanism, we no longer need the elaborate machinery we had to get deposit contract data from the execution layer.
Since holesky has already forked to electra and completed the transition period, this PR basically checks to see if removing all the eth1 related logic leads to any surprises.
I think this should resolve#7155
This removes the level field from the instrumenting we were doing across a range of functions. The level will now default to the level of the log.
#6970
This allows for us to receive `SingleAttestation` over gossip and process it without converting. There is still a conversion to `Attestation` as a final step in the attestation verification process, but by then the `SingleAttestation` is fully verified.
I've also fully removed the `submitPoolAttestationsV1` endpoint as its been deprecated
I've also pre-emptively deprecated supporting `Attestation` in `submitPoolAttestationsV2` endpoint. See here for more info: https://github.com/ethereum/beacon-APIs/pull/531
I tried to the minimize the diff here by only making the "required" changes. There are some unnecessary complexities with the way we manage the different attestation verification wrapper types. We could probably consolidate this to one wrapper type and refactor this even further. We could leave that to a separate PR if we feel like cleaning things up in the future.
Note that I've also updated the test harness to always submit `SingleAttestation` regardless of fork variant. I don't see a problem in that approach and it allows us to delete more code :)
Currently the validator effective balance used for computing PeerDAS custody group count is only updated when the validator subscribes to the BN via `validator/beacon_committee_subscriptions`.
If a validator stops registering with the node, the effective balance gets outdated and stays in the BN memory until the next restart. They are no longer required for CGC computation, as long as the CGC never reduces as per the spec, therefore they can be dropped.
Resolves#6767
This PR implements a basic version of validator custody.
- It introduces a new `CustodyContext` object which contains info regarding number of validators attached to a node and the custody count they contribute to the cgc.
- The `CustodyContext` is added in the da_checker and has methods for returning the current cgc and the number of columns to sample at head. Note that the logic for returning the cgc existed previously in the network globals.
- To estimate the number of validators attached, we use the `beacon_committee_subscriptions` endpoint. This might overestimate the number of validators actually publishing attestations from the node in the case of multi BN setups. We could also potentially use the `publish_attestations` endpoint to get a more conservative estimate at a later point.
- Anytime there's a change in the `custody_group_count` due to addition/removal of validators, the custody context should send an event on a broadcast channnel. The only subscriber for the channel exists in the network service which simply subscribes to more subnets. There can be additional subscribers in sync that will start a backfill once the cgc changes.
TODO
- [ ] **NOT REQUIRED:** Currently, the logic only handles an increase in validator count and does not handle a decrease. We should ideally unsubscribe from subnets when the cgc has decreased.
- [ ] **NOT REQUIRED:** Add a service in the `CustodyContext` that emits an event once `MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS ` passes after updating the current cgc. This event should be picked up by a subscriber which updates the enr and metadata.
- [x] Add more tests
We're seeing slow KZG performance on `fusaka-devnet-0` and looking for optimisations to improve performance.
Zipping the list first then `into_par_iter` shows a 10% improvement in performance benchmark, i suspect this might be even more material when running on a beacon node.
Before:
```
blobs_to_data_column_sidecars_20
time: [11.583 ms 12.041 ms 12.534 ms]
Found 5 outliers among 100 measurements (5.00%)
```
After:
```
blobs_to_data_column_sidecars_20
time: [10.506 ms 10.724 ms 10.982 ms]
change: [-14.925% -10.941% -6.5452%] (p = 0.00 < 0.05)
Performance has improved.
Found 6 outliers among 100 measurements (6.00%)
```
Lighthouse currently requires checkpoint sync to be performed against a supernode in a PeerDAS network, as only supernodes can serve blobs.
This PR lifts that requirement, enabling Lighthouse to checkpoint sync from either a fullnode or a supernode (See https://github.com/sigp/lighthouse/issues/6837#issuecomment-2933094923)
Missing data columns for the checkpoint block isn't a big issue, but we should be able to easily implement backfill once we have the logic to backfill data columns.
Getting this error on a non-PeerDAS network:
```
May 29 13:30:13.484 ERROR Error fetching or processing blobs from EL error: BlobProcessingError(AvailabilityCheck(Unexpected("empty blobs"))), block_root: 0x98aa3927056d453614fefbc79eb1f9865666d1f119d0e8aa9e6f4d02aa9395d9
```
It appears we're passing an empty `Vec` to DA checker, because all blobs were already seen on gossip and filtered out, this causes a `AvailabilityCheckError::Unexpected("empty blobs")`.
I've added equivalent unit tests for `getBlobsV1` to cover all the scenarios we test in `getBlobsV2`. This would have caught the bug if I had added it earlier. It also caught another bug which could trigger duplicate block import.
Thanks Santito for reporting this! 🙏
Addresses a regression recently introduced when we started gossip verifying data columns from EL blobs
```
failures:
network_beacon_processor::tests::accept_processed_gossip_data_columns_without_import
test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 90 filtered out; finished in 16.60s
stderr ───
thread 'network_beacon_processor::tests::accept_processed_gossip_data_columns_without_import' panicked at beacon_node/network/src/network_beacon_processor/tests.rs:829:10:
should put data columns into availability cache: Unexpected("empty columns")
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
```
https://github.com/sigp/lighthouse/actions/runs/15309278812/job/43082341868?pr=7521
If an empty `Vec` is passed to the DA checker, it causes an unexpected error.
This PR addresses it by not passing an empty `Vec` for processing, and not spawning a task to publish.
#7461 and partly #6439.
Desired behaviour after receiving `engine_getBlobs` response:
1. Gossip verify the blobs and proofs, but don't mark them as observed yet. This is because not all blobs are published immediately (due to staggered publishing). If we mark them as observed and not publish them, we could end up blocking the gossip propagation.
2. Blobs are marked as observed _either_ when:
* They are received from gossip and forwarded to the network .
* They are published by the node.
Current behaviour:
- ❗ We only gossip verify `engine_getBlobsV1` responses, but not `engine_getBlobsV2` responses (PeerDAS).
- ❗ After importing EL blobs AND before they're published, if the same blobs arrive via gossip, they will get re-processed, which may result in a re-import.
1. Perform gossip verification on data columns computed from EL `getBlobsV2` response. We currently only do this for `getBlobsV1` to prevent importing blobs with invalid proofs into the `DataAvailabilityChecker`, this should be done on V2 responses too.
2. Add additional gossip verification to make sure we don't re-process a ~~blob~~ or data column that was imported via the EL `getBlobs` but not yet "seen" on the gossip network. If an "unobserved" gossip blob is found in the availability cache, then we know it has passed verification so we can immediately propagate the `ACCEPT` result and forward it to the network, but without re-processing it.
**UPDATE:** I've left blobs out for the second change mentioned above, as the likelihood and impact is very slow and we haven't seen it enough, but under PeerDAS this issue is a regular occurrence and we do see the same block getting imported many times.
Update `engine_getBlobsV2` response type to `Option<Vec<BlobsAndProofV2>>`. See recent spec change [here](https://github.com/ethereum/execution-apis/pull/630).
Added some tests to cover basic fetch blob scenarios.
Use slice.is_sorted which was stabilised in Rust 1.82.0
I thought there would be more places we could use this, but it seems we often want to check strict monotonicity (i.e. sorted + no duplicates)
Closes#5016
The op pool was using the wrong denominator when calculating proposer block rewards! This was mostly inconsequential as our studies of Lighthouse's block profitability already showed that it is very close to optimal. The wrong denominator was leftover from phase0 code, and wasn't properly updated for Altair.
Fix clippy lints for `rustc` 1.87
clippy complains about `BeaconChainError` being too large. I went on a bit of a boxing spree because of this. We may instead want to `Box` some of the `BeaconChainError` variants?
Workaround/fix for:
- https://github.com/sigp/lighthouse/issues/7323
- Remove the `StateSummariesNotContiguousError`. This allows us to continue with DAG construction and pruning, even in the case where the DAG is disjointed. We will treat any disjoint summaries as roots of their own tree, and prune them (as they are not descended from finalized). This should be safe, as canonical summaries should not be disjoint (if they are, then the DB is already corrupt).
This PR adds transitions to Electra ~~and Fulu~~ fork epochs in the simulator tests.
~~It also covers blob inclusion verification and data column syncing on a full node in Fulu.~~
UPDATE: Remove fulu fork from sim tests due to https://github.com/sigp/lighthouse/pull/7199#issuecomment-2852281176
