On 08/03/2015 03:02 AM, Emmanuel Kasper wrote:
We currently have a customer evaluating a system with 16 x 12Gb/s SAS
drives driven by an HBA. They have intentions of building systems with
24 bays and 24 SAS drives.
Maybe we are going about this all wrong and perhaps there is a smarter
way to do this....however....
The customer's software is based on FreeBSD/NAS4Free. This runs on
Proxmox VE as a VM.
The VM's conf file looks like this snippet:
virtio0: /dev/sda
virtio1: /dev/sdb
virtio2: /dev/sdc
virtio3: /dev/sdd
virtio4: /dev/sde
virtio5: /dev/sdf
virtio6: /dev/sdg
virtio7: /dev/sdh
This is to allow the software to see the drives in the GUI and also to
provide max performance....we think. We are also considering PCI
passthrough options to have the VM see the HBA card directly.
The FreeBSD system will then use these drives to create a zpool.
With a limit of 16 Virtio disks, it seems that we can't use this
approach to operate 24 disks.
Any suggestions? Any creative approaches to work around this problem?
Hi Keri
The FreeNAS folks have a good post on how to virtualized FreeNAS, most
of it will apply to Nas4free and KVM.
https://forums.freenas.org/index.php?threads/please-do-not-run-freenas-in-production-as-a-virtual-machine.12484/
Don't be scare by the title, it does work, but you have to pay great
attention to what you are doing ( I am myself having such a setup)
As Michael and the FreeNAS folks says you absolutely have to PCI pass
through your storage controller, as ZFS expects to have access to the
real device.
Thanks much Emmanuel.
The page has been bookmarked - going to take a closer look once I can
liberate some time on this end.
I've seen this some months ago: https://pve.proxmox.com/wiki/Pci_passthrough
The article links to:
http://forums.freenas.org/threads/absolutely-must-virtualize-freenas-a-guide-to-not-completely-losing-your-data.12714/
But as your link seems to be more current - I'm hoping for better
results or at least good advice to get me started.
Thanks again for the great help.
Keri
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