l2geth: verifier sync in parallel with dtl

[tonykogias]

Have verifier node sync in parallel with dtl to save time.

Metadata

• Fixes Have L2Geth sync in parallel with the DTL #2329
• Reopened l2geth: verifier sync in parallel with dtl #2335 here after rebase

[changeset-bot]

🦋 Changeset detected

Latest commit: 197a5c8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@eth-optimism/l2geth	Patch

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[smartcontracts]

I have successfully synced an L1-syncing node with this change. We should try to sync an L2-syncing node as well.

[smartcontracts]

So this definitely works for L1 sync. Maybe we can just enable this feature for L1 sync for now? L2 sync is generally much faster, so this is less necessary.

[tynes]

So this definitely works for L1 sync. Maybe we can just enable this feature for L1 sync for now? L2 sync is generally much faster, so this is less necessary.

I think this should also work when syncing from L2, we would just need to confirm that it is the case it does work by trying it out

[smartcontracts]

I'd really like to get this merged, but I haven't had the opportunity to test on L2-syncing nodes. L1 syncing nodes is where I really care about this anyway because the DTL is so much slower. In the interest of speed, let's just have the IF statement be:

if !cfg.Verifier || cfg.Backend == BackendL2 {
 ...
}

[smartcontracts]

Can confirm that this properly syncs an L1-syncing node

[smartcontracts]

cc @tynes do you mind dropping one quick review here

[smartcontracts]

@tonykogias just needs a quick rebase

[mergify]

This PR has been added to the merge queue, and will be merged soon.

[mergify]

This PR is next in line to be merged, and will be merged as soon as checks pass.

[smartcontracts]

Eyyyyyy SO glad this is live now