A Nova flavor has vcpus=4, ram=8192, disk=20, and an extra spec 'aggregate_instance_extra_specs:ssd=true'. What does the extra spec control?
-
A
It limits the flavor to SSD-backed ephemeral storage only
-
B
It constrains instance placement to host aggregates tagged with ssd=true
-
C
It enables faster network I/O for the instance
-
D
It sets the swap space to SSD partition