Quote Originally Posted by strahil-nikolov-dxc View Post
Sadly, I have never had such requirements infront of me.

Have you considered also GFS2 or even XFS with drbd bellow?
As last resort a Gluster/CEPH cluster can also be tested, although the costs (hardware) will be higher.

I would be happy to learn more about your project.

P.S: you can also add 'nobarrier' mount option if you have a battery-backed cache.

One of the other guys on my team is trying GFS2 with cLVM. My next thing to try is going to be Lustre. We are doing this on a box called "Axellio" that has a shared internal PCIe fabric that lets both nodes access the NVMe drives (both nodes can see all of the SSDs, hence the requirement for a parallel file system). One of the nodes is going to be writing txt files @ 12.5GB/sec, and the other node is going to be reading them as fast as it can for analysis.

https://axellio.com/platforms/fabricxpress

For Lustre, I'm envisioning both of the nodes as OSS, with clients installed on both so each can access the data.

I'll PM you with my contact info. It's a pretty interesting project.