Hmm, maybe... although that wouldn't help with the aggregating multiple nodes issue, or would require a lot of app-side logic.

In this example, I have 200GB of ephemeral storage available on each node, ideally I'd like something like this:

  node1: /tmp/data1 (200GB free space)
  node2: /tmp/data2 (200GB free space)
  node3: /tmp/data3 (200GB free space)
  node4: /tmp/data4 (200GB free space)
  node5: /tmp/data5 (200GB free space)

...pods could some how mount node{1..5} as a volume, which would have 5 * 200GB ~1TB of space to write to... multiple pods could mount it and read the same data.