[Users] ISCSI Luns

Hi, I've been using ovirt in production for a couple of months and had no troubles ( great product! :-) ). I've two issues I'd like to fix and may also be usefull for a new feature in 3.4: The first is that I had to put # RHEV PRIVATE in the multipath.conf of every host as ovirt kept deleting the device and alias definitions and thus, multipath was not able to get the luns. I'd like to know if there's a file in engine where I can set the default config for multipath so I don't have to change every host's multipath.conf everytime I decide to add a new alias, etc. The second is the use of the iscsi domain. I have now all my vms in separate luns (one for each one) in the netapp san, so I use direct lun for the vm disks. But I have a second iscsi san from IBM that is the data domain of the DC. I'd like to have all my vms with storage redundancy by adding both sans as primary and backup but if I try to add the netapp to the storage domain, it can't just import the luns as it writes data to the lun and this would corrupt the lun's filesystems. How can I use both sans without loosing all my vms? Last I'd like to get some recomendations on performance: is it better to have separate luns for each vms than having one lun with different virtual disks? Regards,