[libvirt-users] attaching storage pool error

Hi! System centos7, system default libvirt version. I've succeeded to create an npiv storage pool, which I could start without problems. Though I couldn't attach it to the vm, it throwed errors when trying. I want to boot from it, so I need it working from start. I read one of Daniel Berrange's old(2010) blogs about attaching an iScsi pool, and draw my conclusions from that. Other documentation I haven't found. Someone can point me to a more recent documentation of this? Are there other mailing list in the libvirt/KVM communities that are more focused on storage? I'd like to know about these, if so, since I'm a storage guy, and fiddle around a lot with these things... There are quite a few things I'd like to know about, that I doubt this list cares about, or have knowledge about, like multipath devices/pools, virtio-scsi in combination with npiv-storagepool, etc. So anyone that can point me further....? Rgrds Johan