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pruner: fall back to disk snapshot root when journal is missing #304

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Merged
curryxbo merged 1 commit into from
Mar 20, 2026
Merged

pruner: fall back to disk snapshot root when journal is missing #304

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16 changes: 15 additions & 1 deletion core/state/pruner/pruner.go
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Original file line number Diff line number Diff line change
Expand Up @@ -91,7 +91,21 @@ func NewPruner(db ethdb.Database, datadir, trieCachePath string, bloomSize uint6
}
snaptree, err := snapshot.New(db, trie.NewDatabase(db), 256, headBlock.Root(), false, false, false)
if err != nil {
return nil, err // The relevant snapshot(s) might not exist
// The snapshot journal may be missing (unclean shutdown, or data copied
// from a running node). In that case in-memory diff layers are lost and
// the on-disk snapshot root lags behind the chain head by up to 128
// blocks. Retry with the persisted disk snapshot root so pruning can
// still target the available snapshot state.
diskRoot := rawdb.ReadSnapshotRoot(db)
if diskRoot == (common.Hash{}) {
return nil, err
}
log.Warn("Snapshot journal missing, falling back to disk snapshot root",
"diskRoot", diskRoot, "chainHead", headBlock.Root())
snaptree, err = snapshot.New(db, trie.NewDatabase(db), 256, diskRoot, false, false, false)
if err != nil {
return nil, err
}
}
// Sanitize the bloom filter size if it's too small.
if bloomSize < 256 {
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