Testing and demonstrating immutability of blockfile

[manavdeep]

So anyone tried to demonstrate the immutability aspect of hyperledger to their team?
Like there are 2 ways going about it:

1. Tampering the ledger on a compromised peer
2. Tampering the world state on a compromised peer

For the moment lets talk about 1st. I was hoping the following should happen:

1. Enter a compromised peer and manually edit and save it blockfile in container.
2. Next transaction should fail (ofcourse the endorsement policy is depending on the tampered peer's participation)

Its not happening unless I restart the tampered peer. Things keep working fine. The blockfile that I tampered shows the time stamp of old data only. So whats happening? Is the peer operating out of memory and not writing to the disk?