Hi Maged, I had a go at hacking up a (4.17.0-rc3) kernel RBD based PoC using your request expiry approach. The Ceph (v13.0.2-1974) OSD request expiry functionality is added via a new (likely in the completely wrong place) class="user" fn="expire_req" call: https://github.com/ddiss/ceph/commits/poc_osd_req_expiry This new class function is then invoked via an op that is prefixed to all kRBD OSD write requests *if* the image is mapped with a write_expiry_msec=X parameter: https://git.samba.org/?p=ddiss/linux.git;a=shortlog;h=refs/heads/poc_krbd_wreq_expiry I've also hacked up similar (uglier) patches for target_core_rbd, but I'd be interested in feedback on these upstream based kRBD/OSD changes before looking how this could be added to librbd for future active/active tcmu-runner deployments. Cheers, David -- 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
