Support read-only modes for MPT tools

Fantom-foundation / Carmen

Carmen engine for fast world state storage.

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Support read-only modes for MPT tools #664

Open HerbertJordan opened 1 year ago

HerbertJordan commented 1 year ago

To support cases where data bases are protected by OS level permissions, verification tools should be able to work on files where there are only read permissions.

Tools to be included:

the info tool
the export tool
the verification tool

thaarok commented 11 months ago

For checking of the consistence of Carmen database with go-opera leveldb database, I still need to open the database to obtain:

live state hash
last archive block hash

As long it is not possible to obtain it without opening the state for writing, issues like https://github.com/Fantom-foundation/Carmen/issues/679 can occur (the database was corrupted, because the process was terminated in the middle of unnecessary state flushing)