nfs-ganesha vs rapr

NFS-Ganesha is a user-space NFS server with pluggable FSAL backends for CEPH, GPFS and others. It is releasing major versions at an unusual rate — 12.0 through 15.1 since mid-July — and the connecting thread across all of them is gRPC: infrastructure first, then stats collection ported from DBUS, then more commands, then CacheMgr APIs and export management. Version 15.0 adds memory statistics and accounting alongside those APIs.

This is a control-plane migration carried out release by release in the open. Each version moves another slice of management surface onto gRPC — stats, exports, cache manager, a fake recall API for testing — while the data path work continues separately with XCOPY and clustered quality of service at 14.0. The 15.1 release extends ShowExports with a protocol summary and adds a gRPC FakeRecall API, which reads as filling in coverage rather than opening new ground. Note 15.0 and 15.1 are stamped seventy-nine seconds apart, so they were cut together rather than released as separate events.

Expect the remaining DBUS-era management commands to keep landing as gRPC APIs at this cadence. The open question these entries do not answer is whether DBUS is eventually removed or kept indefinitely alongside.