[Virtio-fs] One virtiofs daemon per exported dir requirement

[Vivek Goyal]

Hi,

Dan Walsh and Mrunal mentioned that one virtiofsd daemon per exported
directory requirement sounds excessive. For container use case, they have
atleast 2-3 more directories they need to export (secrets and /etc/host). And
that means 3-4 virtiofsd running for each kata container. 

One option seems that bind mount all exports in one directory and export
that directory using one virtiofsd. I am aware of atleast one problem
with that configuraiton and that is possibility of inode number collision
if bind mounts are coming from different devices. Not sure how many
applications care though. Sergio is looking into solving this issue. It
might take a while though.

Any other thoughts?

Thanks
Vivek