hi, my ceph cluster version is Luminous run the kernel version Linux 3.10 [root@node-1 ~]# ceph features { "mon": { "group": { "features": "0x3ffddff8eeacfffb", "release": "luminous", "num": 3 } }, "osd": { "group": { "features": "0x3ffddff8eeacfffb", "release": "luminous", "num": 15 } }, "client": { "group": { "features": "0x40106b84a842a52", "release": "jewel", "num": 3 }, "group": { "features": "0x3ffddff8eeacfffb", "release": "luminous", "num": 170 } } } Which version of the kernel should i ues? Thanks!