Use strict metadata reads during migration selection so a metadata bucket with a
missing metadata/dbp key is not interpreted as the latest DB version.
Recover this state from mandatory DB version 33, the last mandatory version
before the v0.20.x releases that could initialize a DB without writing the DB
version key. This runs migration 35 without replaying migrations 0 through 33
against a DB that was already created by a modern schema/code path.
After the selected migrations complete, syncVersions writes the latest DB
version as usual.
The channeldb implements the persistent storage engine for lnd and
generically a data storage layer for the required state within the Lightning
Network. The backing storage engine is
boltdb, an embedded pure-go key-value store
based off of LMDB.
The package implements an object-oriented storage model with queries and
mutations flowing through a particular object instance rather than the database
itself. The storage implemented by the objects includes: open channels, past
commitment revocation states, the channel graph which includes authenticated
node and channel announcements, outgoing payments, and invoices
Installation and Updating
$ go get -u github.com/lightningnetwork/lnd/channeldb
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