On Thu, Jul 11, 2019 at 18:16:58 +0200, Peter Krempa wrote: > On Thu, Jul 11, 2019 at 18:12:16 +0200, Michal Privoznik wrote: > > On 7/11/19 6:05 PM, Peter Krempa wrote: > > > On Thu, Jul 11, 2019 at 17:53:58 +0200, Michal Privoznik wrote: > > > > To simplify implementation, some restrictions are added. For > > > > instance, an NVMe disk can't go to any bus but virtio and has to > > > > be type of 'disk' and can't have startupPolicy set. > > > > > > > > Signed-off-by: Michal Privoznik <[email protected]> > > > > ---
[...] > Yes it certainly will be possible with blockdev. Also you have such a > file in the backing chain which gets detected from the file metadata on > the disk, so such a check will probably need to be duplicated also when > starting the VM (the validate callback function may be better match). > > > > > > > > > Also this seems all to belong to the qemu specific post parse callback. > > > > Possibly. But since other drivers would still use virNVMeDevice module I'm > > adding later in this series, and since the module is build on these > > assumptions I figured the best place to check for them is in driver agnostic > > callback. > > Fair enough. Thinking about this a bit more, if there will be a separate module for this, that module should expose the validator. Also I'm not persuaded about the universality of this code at all thus I doubt that it will be reused in other hypervisors as it requires a userspace driver for NVMe in the hypervisor, which is a pretty niche configuraion/use case.
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