b2813980b8 init: disallow reindex-chainstate when pruning (Martin Zumsande)
Pull request description:
The combination of `-reindex-chainstate` and `-prune` currently makes the node stuck in an endless loop:
- `LoadChainstate()` will wipe the existing chainstate (so we have no genesis block anymore). It won't clean up unusable block files by calling `CleanupBlockRevFiles()` as for full `-reindex`.
- `ThreadImport()` has [logic](91d12344b1/src/node/blockstorage.cpp (L855)) of reloading Genesis after reindexing. This is what makes full `-reindex` work with `-prune` but it's not executed for `-reindex-chainstate`.
- Since we still don't have a genesis block, init will wait for it forever in an endless loop ([code](91d12344b1/src/init.cpp (L1630-L1640))).
Fix this by disallowing `-reindex-chainstate` together with `-prune`. This is discouraged in the help for `-reindex-chainstate` anyway ("When in pruning mode or if blocks on disk might be corrupted, use full -reindex instead.") but wasn't enforced.
Fixes#24242
ACKs for top commit:
MarcoFalke:
cr ACK b2813980b8
Tree-SHA512: 7220842daaf9a4f972d82b13b81fdeac2833bf5e665c5b0f8eaf6a4bcd0725c8e97d19ec956ca4b730065a983475bb3a2732713d338f4caf8666ccbf63d4d988
4a0ab355b3