Create a replica & calculate commR

[th7nder]

After the deals have been negotiated by publish_storage_deals, Storage Provider needs to pre-commit to the data, before the deal starts.

To do so:

• file first needs to be transferred to the Storage Provider Node
• then they need to Create a Replica and Calculate CommR out of it

Resources:

• Replication
• Be aware Naming Differences CommCR/CommR and all
• function that just does this

My opinion on how to proceed:

• Expose this functionality as a CLI instead of implementing processing state machine in storage provider for now?
• Then transition to the storage provider, but keep that in mind when implementing

https://github.com/filecoin-project/lotus/blob/471819bf1ef8a4d5c7c0476a38ce9f5e23c59bfc/storage/pipeline/states_sealing.go#L66

https://github.com/filecoin-project/lotus/tree/471819bf1ef8a4d5c7c0476a38ce9f5e23c59bfc/storage/sealer