On Wed, Jan 17, 2018 at 3:48 PM, Huamin Chen <hchen@xxxxxxxxxx> wrote: > On Wed, Jan 17, 2018 at 9:17 AM, Jason Dillaman <jdillama@xxxxxxxxxx> wrote: >> On Wed, Jan 17, 2018 at 8:47 AM, Huamin Chen <hchen@xxxxxxxxxx> wrote: >>> Hi, >>> >>> I am thinking of using Ceph REST API tclient o remove rbd cli >>> dependency from Kubernetes and rbd CSI driver. >>> >>> The potential work flow is >>> - for rbd map, use sysfs >> >> Why re-implement the wheel? I think the rbd CLI is a good fit for this >> use-case. Especially when you consider that the CSI driver should >> eventually support not only krbd, but nbd and tcmu-based block device >> drivers. These are all being unified via new "rbd device map >> --device-type <XYZ>" / "rbd device unmap" CLI commands to provide a >> unified interface [1]. >> > > The reason is to slim down the driver container. If CSI driver doesn't > use rbd cli, then we don't need to install ceph-common. Out of curiousity, how big is the image today with just the minimal dependencies of librbd? John > > But you are right, nbd and other drivers are still something to consider. > > >>> - use REST API client for rbd status, rbd create and rm >>> >>> Questions: Does current Ceph REST server support these rbd calls? Has >>> anybody already worked on Golang client? >> >> Not to my knowledge. Assuming you keep the rbd CLI which will bring >> with it the librados2 and librbd1 shared libraries, any reason to not >> just directly use / expand the Ceph golang API [2]? >> >>> I found some early work on python client [1] but so far no work on >>> golang client. If I missed it, please let me know. >>> >>> >>> 1. https://github.com/dmsimard/python-cephclient >>> >>> Thanks >>> >>> Huamin >>> -- >>> 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 >> >> [1] https://github.com/ceph/ceph/pull/19711 >> [2] https://github.com/ceph/go-ceph >> >> -- >> Jason > -- > 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 -- 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
