Hello everyone, Just thought I'd circle back on some discussions I've had with people earlier in the year: Shortly before firefly, snapshot support for CephFS clients was effectively disabled by default at the MDS level, and can only be enabled after accepting a scary warning that your filesystem is highly likely to break if snapshot support is enabled. Has any progress been made on this in the interim? With libcephfs support slowly maturing in Ganesha, the option of deploying a Ceph-backed userspace NFS server is becoming more attractive -- and it's probably a better use of resources than mapping a boatload of RBDs on an NFS head node and then exporting all the data from there. Recent snapshot trimming issues notwithstanding, RBD snapshot support is reasonably stable, but even so, making snapshot data available via NFS, that way, is rather ugly. In addition, the libcephfs/Ganesha approach would obviously include much better horizontal scalability. In addition, https://github.com/nfs-ganesha/nfs-ganesha/wiki/ReleaseNotes_2.0#CEPH states: "The current requirement to build and use the Ceph FSAL is a Ceph build environment which includes Ceph client enhancements staged on the libwipcephfs development branch. These changes are expected to be part of the Ceph Firefly release." ... though it's not clear whether they ever did make it into firefly. Could someone in the know comment on that? Thanks! Cheers, Florian
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