Updated Updating CHT (markdown)
Ivan Daniluk
parent
10a14ecc61
commit
1962afe990
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@ -0,0 +1,70 @@
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Proof by construction.
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## Generate CHT/BloomTrie:
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1. Clone https://github.com/ethereum/go-ethereum
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2. Run `make`
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3. Run full node: `build/bin/geth --testnet --syncmode "full" --lightserv 90 --cache 512 console`
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4. Wait until it synchronizes (if unsure, check the latest block number with http://ropsten.etherscan.io for example)
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5. Find two log lines starting with **"Storing CHT"** and **"Storing BloomTrie"**.
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Example output:
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```
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INFO [01-16|13:37:34] Storing CHT idx=71 sectionHead=196bbde833b65a00668ebfd41e2250252ca341b43f33719637ff9b7b0c6fb6c7 root=4d3108bf5334e1eee0d0940b43b69f532012640961f658cf5e42930dbebefba9
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INFO [01-16|13:37:40] Storing BloomTrie section=71 sectionHead=196bbde833b65a00668ebfd41e2250252ca341b43f33719637ff9b7b0c6fb6c7 root=dcd1f171503b19970b37a851498c1eeac4744bfb26df9d67ab360818f3d37ba4 compression ratio=0.059
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```
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6. Write down 4 values (example, based on output above):
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* Section Index: **71** (`idx=`)
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* Section Head: **196bbde833b65a00668ebfd41e2250252ca341b43f33719637ff9b7b0c6fb6c7** (`sectionHead=`)
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* CHT Root: **4d3108bf5334e1eee0d0940b43b69f532012640961f658cf5e42930dbebefba9** (`root=` from the "Storing CHT" line)
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* BloomTrie Root: **dcd1f171503b19970b37a851498c1eeac4744bfb26df9d67ab360818f3d37ba4** (`root=` from the "Storing BloomTrie" line)
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## Update CHT:
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1. Update https://github.com/status-im/status-go/blob/develop/geth-patches/0006-latest-cht.patch with the new values
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2. Example from the output above:
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```diff
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diff --git a/light/postprocess.go b/light/postprocess.go
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index e7e51388..dc6562be 100644
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--- a/light/postprocess.go
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+++ b/light/postprocess.go
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@@ -66,12 +66,20 @@ var (
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chtRoot: common.HexToHash("6f56dc61936752cc1f8c84b4addabdbe6a1c19693de3f21cb818362df2117f03"),
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bloomTrieRoot: common.HexToHash("aca7d7c504d22737242effc3fdc604a762a0af9ced898036b5986c3a15220208"),
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}
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+
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+ statusRopstenCheckpoint = trustedCheckpoint{
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+ name: "Ropsten testnet",
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+ sectionIdx: 74,
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+ sectionHead: common.HexToHash("196bbde833b65a00668ebfd41e2250252ca341b43f33719637ff9b7b0c6fb6c7"),
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+ chtRoot: common.HexToHash("4d3108bf5334e1eee0d0940b43b69f532012640961f658cf5e42930dbebefba9"),
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+ bloomTrieRoot: common.HexToHash("dcd1f171503b19970b37a851498c1eeac4744bfb26df9d67ab360818f3d37ba4"),
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+ }
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)
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// trustedCheckpoints associates each known checkpoint with the genesis hash of the chain it belongs to
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var trustedCheckpoints = map[common.Hash]trustedCheckpoint{
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params.MainnetGenesisHash: mainnetCheckpoint,
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- params.TestnetGenesisHash: ropstenCheckpoint,
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+ params.TestnetGenesisHash: statusRopstenCheckpoint,
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}
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var (
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```
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2. TBD: apply patches to the `status-im/go-ethereum`
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3. TBD: update vendored dependency using `dep` command
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## How to avoid running full sync on you localhost?
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1. Go to machine called `miner1`,
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2. Run `service stop geth` to stop currently running geth,
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3. Run a container:
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```
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docker run -d --name full-geth -i -p 30303:30303 -v /mnt/ethereum/custom-full:/root/.ethereum ethereum/client-go:v1.7.2 --testnet --syncmode "full" --cache 512 --verbosity 5 --lightserv 90
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```
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`/mnt/ethereum/custom-full` directory has previously downloaded chain-data files,
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4. Grep for CHT logs: `docker logs --since=30s -f full-geth 2>&1 | grep -e "INFO\|CHT"`,
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5. When you get the newest CHT number, stop `full-geth` container and remove it,
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6. Bring back the stopped geth service: `service start geth`.
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@ -1,34 +0,0 @@
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Proof by construction.
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## Generate CHT:
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1. Clone https://github.com/ethereum/go-ethereum
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2. Change `log.Trace` to `log.Error` in https://github.com/ethereum/go-ethereum/blob/bf1e2631281e1e439533f2abcf1e99a7b2f9552a/les/server.go#L403
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3. Run `make`
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4. Run full node: `build/bin/geth --testnet --syncmode "full" --lightserv 90 --cache 512 console`
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5. Wait until it synchronises and find error messages like "Generated CHT" with the needed values
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## Update CHT:
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1. Update https://github.com/status-im/status-go/blob/9463d3843aa237d5ddc79f3cc2187a422d4065b3/static/config/cht.json with the new values
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2. Run `make generate` to include the new static file to `bindata.go`
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3. Update `geth/params/config_test.go` and `geth/params/testdata/config.*.json` with the new values
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4. Run `make`
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5. Run `build/bin/statusd --networkid 3 les` on all available networks and ensure block synchronisation starts from block number `number * 4096`
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6. Commit and file a PR
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If anyone knows a better way, we'd be extremely grateful if you shared it.
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## How to avoid running full sync on you localhost?
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1. Go to machine called `miner1`,
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2. Run `service stop geth` to stop currently running geth,
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3. Run a container:
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```
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docker run -d --name full-geth -i -p 30303:30303 -v /mnt/ethereum/custom-full:/root/.ethereum ethereum/client-go:v1.7.2 --testnet --syncmode "full" --cache 512 --verbosity 5 --lightserv 90
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```
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`/mnt/ethereum/custom-full` directory has previously downloaded chain-data files,
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4. Grep for CHT logs: `docker logs --since=30s -f full-geth 2>&1 | grep -e "INFO\|CHT"`,
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5. When you get the newest CHT number, stop `full-geth` container and remove it,
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6. Bring back the stopped geth service: `service start geth`.
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