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Reference for manipulating Erigon datadirs. Use this when the user wants to perform operations on Erigon data directories.
Use the 'erigon seg step-rebase' command to change the step size of an existing datadir. Use when the user wants to rebase segments or modify step sizes.
Run the full Erigon test suite locally using GOGC=80 make test-all. Use this before marking a PR ready for review. Equivalent to the "All tests" CI workflow.
Run Erigon tests with Go race detector to find data races and concurrency bugs. Use this for concurrency-sensitive changes (parallel executor, p2p, txpool). Takes 30-60 minutes.
Run Erigon CI checks locally and/or trigger them remotely on a branch via GitHub Actions workflow_dispatch. Use this when you need to verify a branch passes all CI before or after pushing — especially for branches like bal-devnet-2 that don't auto-trigger on push/PR events.
Implement a new EIP for a hardfork under development in Erigon. Use when the user asks to implement, port, or wire up an EIP — covers spec lookup, dep analysis, prior-work check, implementation, lint, tests, and a wrap-up saved to `agentspecs/`.
Run benchmarkoor performance benchmarks against a locally-built Erigon binary and produce per-test MGas/s comparison tables. Covers image build, dataset reset, run invocation, result parsing, and before/after comparisons.
| name | erigon-datadir |
| user-invocable | false |
| description | Reference for manipulating Erigon datadirs. Use this when the user wants to perform operations on Erigon data directories. |
| allowed-tools | Bash, Read, Glob |
Given a source path and destination path, follow this procedure exactly.
All checks must pass before copying. Abort on the first failure.
test -d <src> — abort if missing<src>/nodekey (file)<src>/snapshots/ (directory)<src>/chaindata/ (directory)test ! -e <dst> — abort if it already existstest -w "$(dirname <dst>)" — abort if notdu -sh <src> and always tell the user the size before proceedingmount output. If the mount entry contains apfs, use the APFS CoW procedure below; otherwise use the full-copy procedure.Use this when the destination is on an APFS volume.
cp -ac <src> <dst> — this creates a CoW clone that is near-instant and consumes no extra disk space.rm -rf <dst>/chaindataUse this when the destination is NOT on APFS.
df -h "$(dirname <dst>)" and compare available space to the source size. If available space is less than source size, abort and tell the user — do not proceed.cp -a <src> <dst> to recursively copy the entire datadir. This is a long-running operation for large datadirs — run in background.After either procedure completes, confirm success by listing the destination contents and comparing against the source (minus chaindata/ for APFS copies).