fsck

fsck

fsck is a simple tool for verifying the integrity of a tlog-tiles log.

It is so-named as a nod towards the 'nix tools which perform a similar job for filesystems. Note, however, that this tool is generally applicable for all tlog-tile instances accessible via a HTTP, not just those which happen to be backed by a POSIX filesystem.

Usage

The tool is provided the URL of the log to check, and will attempt to re-derive the claimed root hash from the log's checkpoint, as well as the contents of all tiles implied by the tree size it contains.

It can be run with the following command:

$ go run github.com/transparency-dev/tessera/cmd/experimental/fsck --storage_url=http://localhost:2024/ --public_key=tessera.pub
I0519 12:48:18.776151   16532 fsck.go:61] Fsck: checking log of size 203150
I0519 12:48:20.991727   16532 fsck.go:116] Successfully fsck'd log with size 203150 and root veoRTC8vvpl5VyXbG4mALWTBlz75rVKWKnSXoUX3UHU= (bdea114c2f2fbe99795725db1b89802d64c1973ef9ad52962a7497a145f75075)

Optional flags may be used to control the amount of parallelism used during the process, run the tool with --help for more details.