feat: handle disconnected blocks #3154

	# Runs an ethereum mainnet sync test.

	name: eth-sync-test

	on:
	pull_request:
	merge_group:
	push:
	branches: [main]

	env:
	CARGO_TERM_COLOR: always

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	jobs:
	sync:
	name: sync / 100k blocks
	# Only run sync tests in merge groups
	if: github.event_name == 'merge_group'
	runs-on:
	group: Reth
	env:
	RUST_LOG: info,sync=error
	RUST_BACKTRACE: 1
	timeout-minutes: 60
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@stable
	- uses: Swatinem/rust-cache@v2
	with:
	cache-on-failure: true
	- name: Build reth
	run: \|
	cargo install --features asm-keccak,jemalloc --path bin/reth
	- name: Run sync
	run: \|
	reth node \
	--debug.tip 0x91c90676cab257a59cd956d7cb0bceb9b1a71d79755c23c7277a0697ccfaf8c4 \
	--debug.max-block 100000 \
	--debug.terminate
	- name: Verify the target block hash
	run: \|
	reth db get static-file headers 100000 \
	\| grep 0x91c90676cab257a59cd956d7cb0bceb9b1a71d79755c23c7277a0697ccfaf8c4
	- name: Run stage unwind for 100 blocks
	run: \|
	reth stage unwind num-blocks 100

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