[Virtio-fs] Kudos: productivity boost using virtio-fs

[Harry G. Coin]

Though it's likely been written before:

Virtio-fs is a wonderful productivity boost in development environments
in which unrelated deadlocks, crashes and hard-lockups happen.   Why? 
Because the underlying file system is never corrupted (though individual
file contents may be, the file system itself is protected).   For
example, using btrfs' snapshot ability in the underlying file system and
comparing 'before and after' crashes creates a powerful debugging tool.

I suspect most folks involved in virtio-fs know this, but it's worth
putting in the record for new folks.

Harry