Hi Sage, Greg suggested I run this by you before we rely on it and I'm cc'ing ceph-devel in case anyone else has thoughts. In the ceph userland code, the client Inode structure has a "version" field that is a uint64_t. That appears to get incremented whenever something changes in the data or metadata for the inode. If so, then we may just be able to expose that as the stx_version field in a ceph_statx() call, which ganesha could then use as a NFSv4 change attribute. The big question mark there of course is whether that will also work for directories. It looks like anytime we do a getattr on a directory, the MDS will do a gather of all the dirfrags and the version field will change if something has changed. Is that the case? Any other caveats to taking this approach that you can think of? -- Jeff Layton <jlayton@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
