High IO delay Direct mount bind zfs

[Alexey]

@molnart

so disabling lazy-filewalker disables filewalker totally, instead of running the same stuff, just not in a lazy mode?

This disables only the lazy mode. So, you should see some filewalkers, however with this:

@molnart

piecestore=FATAL

You unlikely will see it.
But you can always use a debug port to check, what processes are running.