Hi, We have been talking more and more about the long-awaited feature at https://issues.apache.org/jira/browse/MESOS-1554
I started looking at what have been done in the APIs and as far as I understand framework will be able to reserved and unreserve resources with DiskInfo. Each DiskInfo has a persistent id and a volume. The host_path in DiskInfo is ignored (only used for containerInfo). Question: how could can we tell the mesos slave which disks to allocate and how do we identify disks? My slaves have multiple disks mounted, with different characteristics and sizes. Some are more appropriate for HDFS use and some for Cassandra. Right now everything is done out of band but I wonder how this could be done with persistent resources. Same question with dynamic reservations: how can I reserve a disk and not just some disk space quota? I clearly don't want my applications to all work on the sane disk (really bad for IO). Maybe I missed the design doc or there is a more detailed description of the future feature somewhere? Thanks for your help, Maxime
