dell perc 6/i passtrough

[PhilipW]

Hi i would like to attach my raid controller to my vm with a pci passtrough.
I followed the instructions on the pci passtrough page.
My processor doesnt support ACS. I have a intel core i7-2600.
But from what i understood it should still be working.
This is what i added to vmid.conf:

machine: q35
hostpci0: 01:00.0,pcie=1

This is the output of lspci

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C216 Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c4)
00:1c.4 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 5 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation Z77 Express Chipset LPC Controller (rev 04)
00:1f.2 IDE interface: Intel Corporation 7 Series/C210 Series Chipset Family 4-port SATA Controller [IDE mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C216 Chipset Family SMBus Controller (rev 04)
00:1f.5 IDE interface: Intel Corporation 7 Series/C210 Series Chipset Family 2-port SATA Controller [IDE mode] (rev 04)
01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 1078 (rev 04)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
04:00.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 41)
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8169 PCI Gigabit Ethernet Controller (rev 10)
06:00.0 SATA controller: ASMedia Technology Inc. Device 0625 (rev 01)

This is the error i get when i try to start the vm:

/dev/raid1/media: read failed after 0 of 4096 at 0: Input/output error
  /dev/raid1/media: read failed after 0 of 4096 at 5999528181760: Input/output error
  /dev/raid1/media: read failed after 0 of 4096 at 5999528239104: Input/output error
  /dev/raid1/media: read failed after 0 of 4096 at 4096: Input/output error
kvm: -device vfio-pci,host=01:00.0,id=hostpci0,bus=ich9-pcie-port-1,addr=0x0: vfio error: 0000:01:00.0: hardware reports invalid configuration, MSIX PBA outside of specified BAR
TASK ERROR: start failed: command '/usr/bin/kvm -id 100 -name Osiris-media -chardev 'socket,id=qmp,path=/var/run/qemu-server/100.qmp,server,nowait' -mon 'chardev=qmp,mode=control' -pidfile /var/run/qemu-server/100.pid -daemonize -smbios 'type=1,uuid=c8b1ba74-d233-42e8-8bcd-186e2dfba63c' -smp '4,sockets=1,cores=4,maxcpus=4' -nodefaults -boot 'menu=on,strict=on,reboot-timeout=1000,splash=/usr/share/qemu-server/bootsplash.jpg' -vga std -vnc unix:/var/run/qemu-server/100.vnc,x509,password -cpu kvm64,+lahf_lm,+sep,+kvm_pv_unhalt,+kvm_pv_eoi,enforce -m 6148 -readconfig /usr/share/qemu-server/pve-q35.cfg -device 'nec-usb-xhci,id=xhci,bus=pci.1,addr=0x1b' -device 'usb-tablet,id=tablet,bus=ehci.0,port=1' -device 'vfio-pci,host=01:00.0,id=hostpci0,bus=ich9-pcie-port-1,addr=0x0' -device 'usb-host,bus=xhci.0,vendorid=0x0951,productid=0x1666,id=usb0' -chardev 'socket,path=/var/run/qemu-server/100.qga,server,nowait,id=qga0' -device 'virtio-serial,id=qga0,bus=pci.0,addr=0x8' -device 'virtserialport,chardev=qga0,name=org.qemu.guest_agent.0' -device 'virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3' -iscsi 'initiator-name=iqn.1993-08.org.debian:01:bb1d1e039ee' -drive 'file=/var/lib/vz/template/iso/debian-9.2.1-amd64-netinst.iso,if=none,id=drive-ide2,media=cdrom,aio=threads' -device 'ide-cd,bus=ide.1,unit=0,drive=drive-ide2,id=ide2,bootindex=200' -device 'virtio-scsi-pci,id=scsihw0,bus=pci.0,addr=0x5' -drive 'file=/dev/pve/vm-100-disk-1,if=none,id=drive-scsi0,format=raw,cache=none,aio=native,detect-zeroes=on' -device 'scsi-hd,bus=scsihw0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0,id=scsi0,bootindex=100' -netdev 'type=tap,id=net0,ifname=tap100i0,script=/var/lib/qemu-server/pve-bridge,downscript=/var/lib/qemu-server/pve-bridgedown,vhost=on' -device 'virtio-net-pci,mac=0A:64:43:97:40:B7,netdev=net0,bus=pci.0,addr=0x12,id=net0,bootindex=300' -netdev 'type=tap,id=net1,ifname=tap100i1,script=/var/lib/qemu-server/pve-bridge,downscript=/var/lib/qemu-server/pve-bridgedown,vhost=on' -device 'virtio-net-pci,mac=3A:8B:C7:20:E6:81,netdev=net1,bus=pci.0,addr=0x13,id=net1,bootindex=301' -machine 'type=q35'' failed: exit code 1

Does anyone know how to resolve this issue?

 

[WhiteStarEOF]

Have you disabled whatever driver Linux loads for the PERC? You can check this with lspci -k 01:00.0

The tricky part is making sure that you're not disabling a driver that is needed elsewhere, like for your primary SATA controller for example. You might be able to unload the driver for the PERC specifically using modprobe -r modulename. If you can, you could just add that unload command as an @reboot in cron.

That's about the best I have for PCI passthrough issues.

 

[wolfgang]

Hi,

please check and send the output of the iommu groups to verify a passthrough is possible.

find /sys/kernel/iommu_groups/ -type l