"""This profile demonstrates how to add some extra *remote* disk space on your node. This is sometimes useful if you need more disk space then is available locally. This type of disk space is **temporary**; the data is deleted when your experiment is terminated. The space is located on a remote ISCSI disk and will of course not be as fast as local disk space, but for many applications is adequate. 

Instructions:
Log into your node, your **temporary** file system in mounted at `/mydata`. Be sure to measure the disk read/write times if your experimental results are depending on specific performance.
"""

# Import the Portal object.
import geni.portal as portal
# Import the ProtoGENI library.
import geni.rspec.pg as pg
# Import the emulab extensions library.
import geni.rspec.emulab

# Create a portal context.
pc = portal.Context()

# Create a Request object to start building the RSpec.
request = pc.makeRequestRSpec()

# Add a node to the request.
node = request.RawPC("node")
# We need a link to talk to the remote file system, so make an interface.
iface = node.addInterface()

# The remote file system is represented by special node.
fsnode = request.RemoteBlockstore("fsnode", "/mydata")
# Set the size you would like.
fsnode.size = "30GB"

# Now we add the link between the node and the special node
fslink = request.Link("fslink")
fslink.addInterface(iface)
fslink.addInterface(fsnode.interface)

# Special attributes for this link that we must use.
fslink.best_effort = True
fslink.vlan_tagging = True

# Print the RSpec to the enclosing page.
pc.printRequestRSpec(request)