Hello guys, We have a Ceph cluster that runs just fine with Ceph Octopus; we use RBD for some workloads, RadosGW (via S3) for others, and iSCSI for some Windows clients. Recently, we had the need to add some VMWare clusters as clients for the iSCSI GW and also Windows systems with the use of Clustered Storage Volumes (CSV), and we are facing a weird situation. In windows for instance, the iSCSI block can be mounted, formatted and consumed by all nodes, but when we add in the CSV it fails with some generic exception. The same happens in VMWare, when we try to use it with VMFS it fails. We do not seem to find the root cause for these errors. However, the errors seem to be linked to the situation of multiple nodes consuming the same block by shared file systems. Have you guys seen this before? Are we missing some basic configuration in the iSCSI GW?