On Thu, 21 Jun 2018, Erwan Velu wrote: >>>If a ratio cannot be met, this is an error condition that would be reported >> So if you have a ratio 1:5, ceph-volume only works in auto if the number of disks are modulo 6 ? >> That's very restrictive. >If you pass in 40 HDDs and 1 SSD it will error out with something like: >"exceeded maximum HDD:SSD ratio of 10:1" But if you use the auto-detection, if you don't have a number of free devices modulo 6 (with 1 SSD/5 HDDs), this error is also triggered. That's why this is very restrictive and especially for POCs or non-hetegorenous setups. So I think we are using an enforced "guessed" ratio on un-predictable platforms. This make me feel this auto-mode will not be widely used forcing many considering the "manual" mode. This is reducing the benefit of automated detection for the masses. I still think we should let some room for the user to define what are his expectations on the ratio & the devices he'd like to autodetect. Erwan, -- 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
