Hi, To use erasure coding in rbd, I created a cache pool with the read-only mode. But when I created a rbd image for the cache pool, there was an unexpected error: rbd create -p cache-pool --image cache-image --image-format 2 --object-size 16K --image-feature layering --size 5G 2016-09-29 21:20:03.437598 7f5b9d150d80 -1 librbd: error writing header: (95) Operation not supported rbd: create error: (95) Operation not supported I think it is due to the reason that setting cache pool in read-only mode, but I do not know why it is. Did someone face the same situation before? Regards -- 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
