Re: [libvirt] [PATCH REPOST v2 0/3] Add callback mech for qemu and nodedev

On 22/02/2017 15:11, Daniel P. Berrange wrote: > On Wed, Feb 22, 2017 at 03:10:00PM +0100, Paolo Bonzini wrote: >> >> >> On 22/02/2017 14:46, Daniel P. Berrange wrote: >>> On Wed, Feb 22, 2017 at 02:38:32PM +0100, Paolo Bonzini wrote: >>>> >>>> >>>> On 22/02/2017 11:05, Daniel P. Berrange wrote: >>>>> I'd also suggest just assigning the whole vHBA >>>> >>>> What do you mean by "assigning the whole vHBA"? There is no concept of >>>> a vHBA as e.g. a PCI virtual function. >>> >>> I thought we had a generic SCSI passthrough capability that could >>> attach to the SCSI vHBA in the host, or am I mis-remembering ? >> >> No, the SCSI passthrough capability attaches to a single device. >> >> With Fibre Channel, zoning allows you to configure the set of visible >> disks for each machine (or more accurately for each WWPN and/or WWNN) at >> the storage fabric level. So the idea is to just configure the >> WWPN/WWNN and let libvirt handle the discovery of disks underneath. The >> alternative is to do it in both oVirt and Nova though, as mentioned >> elsewhere in the thread, libvirt could still provide a udev wrapper. > > What do you mean by "provide a udev wrapper" ? Expose udev events in a way that is friendly to someone who is consuming the nodedev API.