+ # libcloud/ec2 disk sizes are in GB, Arvados/SLURM "scratch" value is in MB
+ scratch = int(size.scratch / 1000) + 1
+ if scratch > size.disk:
+ volsize = scratch - size.disk
+ if volsize < 1:
+ volsize = 1
+ if volsize > 16384:
+ volsize = 16384
+ kw["ex_blockdevicemappings"] = [{
+ "DeviceName": "/dev/xvdt",
+ "Ebs": {
+ "DeleteOnTermination": True,
+ "VolumeSize": volsize,
+ "VolumeType": "gp2"
+ }}]
+ return kw