<device>=<block-device>[,<device>=<block-device>]*Where block-device format is:
[<snapshot-id>]:[<size>]:[<delete-on-termination>]:[<type>]:[<iops>]:[encrypted]Examples:
/dev/sdb=snap-7eb96d16 /dev/sdc=snap-7eb96d16:80:false /dev/sdc=snap-7eb96d16:80:false:io1:100 /dev/sdd=:120 /dev/sdd=:120::::encrypted /dev/sdd=:120::::encrypted,/dev/sdc=:120