On 04/25/2014 08:01 PM, Daniel Helgenberger wrote:
On Fr, 2014-04-25 at 17:19 +0200, Jiri Belka wrote:
On Fri, 25 Apr 2014 13:40:09 +0000 Daniel Helgenberger <daniel.helgenberger@m-box.de> wrote:
Hello,
does anyone have an idea on how to accomplish this? In my particular setup, I need a FC tape drive passed though to the vm. Note, passing throuh FC - LUNs works flawlessly.
If I understood Virtio -SCSI correctly, this should be possible from libvirt's part.
I can be wrong but my understanding is that dm-mpio works on block layer thus it does not support multipath for tapes/cd-devices.
But I could be wrong, I got this info from an OpenBSD paper comparing SCSI multipath implementation.
j. No, I think so too - it does not support tape drive as such (but I could set up a tape library as a LUN to use it with LTFS for instance)
The point being is another. VirtIO SCSI should be able to pass through any scsi device; like tape drives end enclosures. I know this works in Proxmox: http://pve.proxmox.com/wiki/Tape_Drives
Does it work in oVirt, too? In the GUI I only see block LUNs from DM.
i suggest you try making it work via libivrt first, then we can compare to the xml passed to the guest, workaround with a custom hook, etc.