[vfio-users] VFIO + ZFS build

Tue Sep 15 06:00:28 UTC 2015

Honestly, I would go the other way. Passing sata can be a nightmare while
pci passthrough for non-vga card has always worked for me. Currently
passing a dvb-S pci express card  (DVBSky S952 dual dvb-s tuner) to an
ubuntu vm with VDR (Video Disk Recorder) without problem.

2015-09-15 6:46 GMT+02:00 Jouner Journer <journerforums at gmail.com>:

> Thanks for the info.
> Are you running zfs in the hypervisor or in a vm?
> Using zfs for root partition?
>
> I was planning on using onboard sata for zfs.  I suppose passing that
> controller to a vm would be problematic
>
>
> On Tuesday, September 15, 2015, <globalgorrilla at fastmail.fm> wrote:
>
>> Just for reference it's a Quadro K2200 (not a Quadro 2000) I have. I've
>> also used both a R9 290 and R9 260X equally well. Nothing newer than that.
>>
>> On 14 Sep 2015, at 12:58, globalgorrilla at fastmail.fm wrote:
>>
>> I'm running ZFSoL on 4.1.6 and using an R9 290 and Quadro 2000.
>>>
>>> Both cards run well (both reset and are fully supported in the VM with
>>> HyperV extensions).
>>>
>>> ZFS is memory hungry and I could use more than 32 GB RAM.
>>>
>>> ZFSoL as of a couple days supports Linux 4.2 but my QEMU/OVMF VMs don't
>>> work with 4.2. I've heard some here say it might be OVMF.
>>>
>>> My biggest issue once I figured out the quirks for my MB has been that
>>> of IRQ sharing on my Z97 board (Z97-WS).
>>>
>>> The Quadro especially does not like to share an IRQ (with any other
>>> device). The Radeons seem less drastically affected but some combinations
>>> of Radeons don't work with shared IRQs. That seems to be something with the
>>> cards and not specific to vfio or Linux. ASUS documents their IRQ
>>> combinations but in reality once you disable some onboard devices it's a
>>> crapshoot as to what IRQs get assigned. Your board's manual doesn't mention
>>> IRQ assignments and I don't have an LGA-2011 board so I don't know what you
>>> might expect.
>>>
>>> I'd stick with the 290 over the newer Radeons as the reset mechanisms
>>> are pretty hacky and custom to the card and I'm not sure what support there
>>> is for beyond the 290(X).
>>>
>>> Finally, I am using a Intel 750 and a SuperMicro AOC-SLG3-2E4. That is
>>> an NVME drive and PLX U.2 switch/connector is it's working fine with ZFS.
>>> I'd go with that over any SATA based controller/drive. The interrupt
>>> overhead is much lower. It does take a slot (and IRQ) though. My board with
>>> a PLX switch helps, leaving just the IRQ whack-a-mole headache.
>>>
>>> On 14 Sep 2015, at 8:46, Jouner Journer wrote:
>>>
>>> Hi Everyone,
>>>>
>>>> I'm looking to build a box which can run ZFS on Linux in hypervisor,
>>>> misc
>>>> linux VMs, as well as a Windows vm for gaming.
>>>>
>>>> Is anyone doing video passthrough as well as running ZFSoL?  I've read
>>>> ZFS
>>>> requires specific kernel versions in Arch and am wondering if I'll run
>>>> into
>>>> compatibility issues.
>>>>
>>>> Also, this is the hardware I've selected... are there any blatant
>>>> problems
>>>> that stick out?  I've been toying with the idea of different processor
>>>> (less cores, more speed), but figured more cores is better...  how about
>>>> Radeon R9 390X... is it too new to be tested/confirmed?
>>>>
>>>> Given that it is xeon processor and motherboard supports VT-d/VT-x,
>>>> motherboard and video card are uefi I'm hoping I will not run into too
>>>> many
>>>> issues with passthrough... at least hardware limited issues ;)
>>>>
>>>> ASRock EPC612D8A-TB SSI ATX Server Motherboard Socket LGA 2011 R3
>>>> Intel Xeon E5-2630 v3 Haswell-EP 2.4 GHz LGA 2011-3 85W BX80644E52630V3
>>>> Server Processor
>>>> SAPPHIRE Radeon R9 390X 100381OCL 8GB 512-Bit GDDR5 PCI Express 3.0 2.2
>>>> Slot, ATX Tri-X OC Version (UEFI) Video Card
>>>>
>>>> SeaSonic Platinum-1000 1000W PSU
>>>> Intel 535 Series SSDSC2BW180H601 2.5" 180GB SATA III MLC SSD
>>>> Intel 535 Series SSDSCKJW360H601 M.2 360GB SATA III MLC SSD
>>>> Kingston 64GB (4 x 16GB) 288-Pin DDR4 SDRAM ECC Registered DDR4 2133
>>>> (PC4
>>>> 17000) Server Memory Model KVR21R15D4K4/64
>>>>
>>>>
>>>> Thanks in advance!
>>>> _______________________________________________
>>>> vfio-users mailing list
>>>> vfio-users at redhat.com
>>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>>
>>>
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>>>
>>
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