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Thanks, that sounds like a very interesting use case. It sounds almost perfect for KVM storage. How do you expose the file system to the KVM nodes? Just mount i

by xorcist 12y ago

Thanks, that sounds like a very interesting use case. It sounds almost perfect for KVM storage. How do you expose the file system to the KVM nodes? Just mount it? What's performance like so far?

andyidsinga 12y ago
qemu has support for ceph's "rbd" ( rados block device). you create an image of a particular size using the ceph tools, then when you create a vm xml definition you specify and rbd disk. ( see here http://libvirt.org/formatdomain.html#elementsDisks http://libvirt.org/formatdomain.html#elementsDisks ) finally, when the vm is booted you can use that block device like any other machine. for first install it will be empty ( need to attach a cdrom image to get going ) then youncan start making snapshots for "thin provisioning" using copy on write clones ...very sweet stuff :) re performance ...i think its good, but i have heard its not as good as expensive proprietary systems. the product we're building is around storage analytics on open source. ..so eventually well know more :)