Actual block device support

[temoto]

Hello. Thanks for great VM implementation.

It seems (but not documented?) that drives[].path_on_host requires a file? Can I trick firecracker into passing an actual block device into guest for a root fs?

Use case: ZFS volume offers integrity, redundancy, online multi-device expansion, snapshot backups and quota. It would be very inconvenient to achieve same result by creating raw file filling whole drive and maintaining more storage pools, one per each VM.

Thank you.

[temoto]

Sorry, it works with block device. Issue was caused by wrong kernel binary. Please delete this embarrassment.