This isn't a topic I know a ton about, but: It is not possible to boot from CephFS, but will be soon (search for "[PATCH 1/4] init: Add a new root device option, the Ceph file system"). I think it is possible to boot from rbd (there is native kernel support for it as a block device, for starters), but I'm not entirely sure of the process. I think it involves <monte carlo> netboot and initrd setups?</monte carlo> -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com On Mon, Jan 27, 2014 at 7:37 PM, Schlacta, Christ <aarcane@xxxxxxxxxxx> wrote: > Has anyone done the work to boot a machine (physical or virtual) from a CEPH > filesystem or RBD? > > I'm very interested in this, as I have several systems that don't need a LOT > of disk throughput and have PLENTY of network bandwidth unused, making them > primary candidates for such a setup. I thought about passing the RBDs > through iscsi, since it's a slightly better documented protocol for booting, > but that would either require the complexities of multipath, or would > introduce an inconvenient single point of failure to the system. Part of > the idea is that RBDs will still be available if one or more members of the > cluster goes down. iscsi doesn't provide that. > > I found a guide for booting from rbds on XEN domu on gentoo, but it was very > vague as to what configuration actually needed to be done, and just sorta > said it would work. In the light of the lack of information, I worry 1) > that the configuration is XEN specific, and depends on the shared kernel, 2) > that the configuration is Gentoo or even site specific, as I didn't explore > the site too well. Here's the article: > http://www.mad-hacking.net/documentation/linux/ha-cluster/storage-area-network/ceph-xen-domu.xml > > Also, I'm using primarily Debian on the server side, and ubuntu for these > satellite systems, if that in any way effects your knowledge or my abilities > > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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