Run an invariant check

Prerequisites ##

To run an invariant check on your Lotus node, you need:

• A lotus node that can be stopped
• lotus-shed installed

Run invariant check ##

1. On your currently synced and running Lotus node, run:

lotus chain list --count 1 | awk -F '[:, ]+' '{print $1, $8}' | xargs -n2 sh -c 'echo -n "Chain Height: $1, ParentStateRoot: "; lotus chain get-block $2 | jq -r ".ParentStateRoot[\"/\"]"' sh

Chain Height: 4062673, ParentStateRoot: bafy2bzacebzxikpluchiv6by7gjnexh4cg3aojyimdtgcieiqs3loah76ejkm

2. Stop the Lotus daemon

lotus daemon stop

3. Run the invariant check

./lotus-shed check-invariants --repo=[path-to-your-.lotus-repo] [ParentStateRoot] [ChainHeight] > /path/to/saved/file/invariants

In the above command, replace [ParentStateRoot] and [ChainHeight] with the output from step 1. Running the invariant check command will take a while (up to two hours depending on your hardware).