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state is missing when num is zero #2183

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Oct 29, 2024
Merged

state is missing when num is zero #2183

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51 changes: 30 additions & 21 deletions core/blockchain.go
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Original file line number Diff line number Diff line change
Expand Up @@ -309,28 +309,37 @@ func NewBlockChain(db ctxcdb.Database, cacheConfig *CacheConfig, chainConfig *pa
// Make sure the state associated with the block is available
head := bc.CurrentBlock()
if !bc.HasState(head.Root()) {
// Head state is missing, before the state recovery, find out the
// disk layer point of snapshot(if it's enabled). Make sure the
// rewound point is lower than disk layer.
var diskRoot common.Hash
if bc.cacheConfig.SnapshotLimit > 0 {
diskRoot = rawdb.ReadSnapshotRoot(bc.db)
}
if diskRoot != (common.Hash{}) {
log.Warn("Head state missing, repairing", "number", head.Number(), "hash", head.Hash(), "snaproot", diskRoot)

snapDisk, err := bc.setHeadBeyondRoot(head.NumberU64(), 0, diskRoot, true)
if err != nil {
return nil, err
}
// Chain rewound, persist old snapshot number to indicate recovery procedure
if snapDisk != 0 {
rawdb.WriteSnapshotRecoveryNumber(bc.db, snapDisk)
}
if head.NumberU64() == 0 {
// The genesis state is missing, which is only possible in the path-based
// scheme. This situation occurs when the initial state sync is not finished
// yet, or the chain head is rewound below the pivot point. In both scenarios,
// there is no possible recovery approach except for rerunning a snap sync.
// Do nothing here until the state syncer picks it up.
log.Info("Genesis state is missing, wait state sync")
} else {
log.Warn("Head state missing, repairing", "number", head.Number(), "hash", head.Hash())
if _, err := bc.setHeadBeyondRoot(head.NumberU64(), 0, common.Hash{}, true); err != nil {
return nil, err
// Head state is missing, before the state recovery, find out the
// disk layer point of snapshot(if it's enabled). Make sure the
// rewound point is lower than disk layer.
var diskRoot common.Hash
if bc.cacheConfig.SnapshotLimit > 0 {
diskRoot = rawdb.ReadSnapshotRoot(bc.db)
}
if diskRoot != (common.Hash{}) {
log.Warn("Head state missing, repairing", "number", head.Number(), "hash", head.Hash(), "snaproot", diskRoot)

snapDisk, err := bc.setHeadBeyondRoot(head.NumberU64(), 0, diskRoot, true)
if err != nil {
return nil, err
}
// Chain rewound, persist old snapshot number to indicate recovery procedure
if snapDisk != 0 {
rawdb.WriteSnapshotRecoveryNumber(bc.db, snapDisk)
}
} else {
log.Warn("Head state missing, repairing", "number", head.Number(), "hash", head.Hash())
if _, err := bc.setHeadBeyondRoot(head.NumberU64(), 0, common.Hash{}, true); err != nil {
return nil, err
}
}
}
}
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