Description

This PR adds a feature to convert full node to fast node by introducing a new CLI tool called delete-trie-state. The tool will delete all PBSS key-value pairs and ancient state stores from the database.

Rationale

This is particularly useful when users want to switch from full node to fast node by deleting the trie state from the database, reducing disk space occupied.

Example

Usage: ./geth --datadir db delete-trie-state

...
INFO [03-18|16:06:39.783] Opened ancient database                  database=/datadir_test/geth/chaindata/ancient/chain readonly=false frozen=909,979
INFO [03-18|16:06:43.759] Deleted trie state                       count=1,683,851 elapsed=3.971s
INFO [03-18|16:06:43.759] Removing ancient state database          path=/datadir_test/geth/chaindata/ancient/state
INFO [03-18|16:06:43.862] State database successfully deleted      path=/datadir_test/geth/chaindata/ancient/state elapsed=103.202ms

Changes

Also added an additional NoTries logic check in SetupGenesisBlockWithOverride to prevent committing the genesis block again. For custom networks, this will result in an error because !triedb.Initialized(header.Root) returns true due to an empty trie database, so we need to skip committing if it's a fast node.