Merge pull request #332 from sipsma/drivemount-rl-ro

Support rate-limiters and read-only for drive mounts.

Author: sipsma

proto/types.pb.go

@@ -144,7 +144,15 @@ message FirecrackerDriveMount {
   // within the VM (i.e. ["rw", "noatime"]). Defaults to none if not specified. 
   repeated string Options = 4;
 
-  // TODO support for ratelimiters and read-only drives (issue #296)
+  // (Optional) RateLimiter configuration that will be applied to the
+  // backing-drive for the VM's rootfs
+  FirecrackerRateLimiter RateLimiter = 5;
+
+  // (Optional) If set to true, IsWritable results in the backing file for the
+  // drive being opened as read-write by the Firecracker VMM on the host, allowing
+  // writes to the image from within the guest. Defaults to false, in which case
+  // the block device in the VM will be read-only.
+  bool IsWritable = 6;
 }
 
 // Message to specify an IO rate limiter with bytes/s and ops/s limits