1069ffc6aa
This is largely a cherry pick of #6755 with some additional fixups added where detected. This change moves the blockchain package to a package called blocksync. Additionally, it renames the relevant uses of the term `fastsync` to `blocksync`. closes: #9227 #### PR checklist - [ ] Tests written/updated, or no tests needed - [x] `CHANGELOG_PENDING.md` updated, or no changelog entry needed - [x] Updated relevant documentation (`docs/`) and code comments, or no documentation updates needed
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State Sync
With block sync a node is downloading all of the data of an application from genesis and verifying it. With state sync your node will download data related to the head or near the head of the chain and verify the data. This leads to drastically shorter times for joining a network.
Using State Sync
State sync will continuously work in the background to supply nodes with chunked data when bootstrapping.
NOTE: Before trying to use state sync, see if the application you are operating a node for supports it.
Under the state sync section in config.toml you will find multiple settings that need to be configured in order for your node to use state sync.
Lets breakdown the settings:
enable: Enable is to inform the node that you will be using state sync to bootstrap your node.rpc_servers: RPC servers are needed because state sync utilizes the light client for verification.- 2 servers are required, more is always helpful.
temp_dir: Temporary directory is store the chunks in the machines local storage, If nothing is set it will create a directory in/tmp
The next information you will need to acquire it through publicly exposed RPC's or a block explorer which you trust.
trust_height: Trusted height defines at which height your node should trust the chain.trust_hash: Trusted hash is the hash in theBlockIDcorresponding to the trusted height.trust_period: Trust period is the period in which headers can be verified.⚠️ This value should be significantly smaller than the unbonding period.
If you are relying on publicly exposed RPC's to get the need information, you can use curl.
Example:
curl -s https://233.123.0.140:26657/commit | jq "{height: .result.signed_header.header.height, hash: .result.signed_header.commit.block_id.hash}"
The response will be:
{
"height": "273",
"hash": "188F4F36CBCD2C91B57509BBF231C777E79B52EE3E0D90D06B1A25EB16E6E23D"
}