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core, eth: abort snapshot generation on snap sync and resume later

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This commit is contained in:
Péter Szilágyi
2021-04-29 17:33:45 +03:00
parent 871f50b911
commit 745757ac6b
10 changed files with 115 additions and 31 deletions
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10
eth/downloader/downloader.go
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@ -28,6 +28,7 @@ import (
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state/snapshot"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/eth/protocols/eth"
"github.com/ethereum/go-ethereum/eth/protocols/snap"
@ -214,6 +215,9 @@ type BlockChain interface {
// InsertReceiptChain inserts a batch of receipts into the local chain.
InsertReceiptChain(types.Blocks, []types.Receipts, uint64) (int, error)
// Snapshots returns the blockchain snapshot tree to paused it during sync.
Snapshots() *snapshot.Tree
}
// New creates a new downloader to fetch hashes and blocks from remote peers.
@ -393,6 +397,12 @@ func (d *Downloader) synchronise(id string, hash common.Hash, td *big.Int, mode
// but until snap becomes prevalent, we should support both. TODO(karalabe).
if mode == SnapSync {
if !d.snapSync {
// Snap sync uses the snapshot namespace to store potentially flakey data until
// sync completely heals and finishes. Pause snapshot maintenance in the mean
// time to prevent access.
if snapshots := d.blockchain.Snapshots(); snapshots != nil { // Only nil in tests
snapshots.Disable()
}
log.Warn("Enabling snapshot sync prototype")
d.snapSync = true
}