[pve-devel] [PATCH qemu-server v2 12/13] fix #3574: enable multi pci device mapping from config

[DERUMIER, Alexandre]

 > root at pve2:~# qm start 101
 > ignoring mediated device with multifunction device

ok, it's simply that indeed I have specify a multifunction path "0000:02".

I think it should better/safe to die here, instead to simply warn and 
continue.


Le 25/08/22 à 16:21, DERUMIER, Alexandre a écrit :
> I can't get mdev device working, it don't create the mdev device
> 
>> +    # ignore mdev for multiple devices, except when from mapping
>> +    if ($res->{mdev} && $ignore_mdev) {
>> +	warn "ignoring mediated device with multifunction device\n";
>> +	delete $res->{mdev};
>>        }
>>        return $res;
>>    }
>> @@ -433,11 +446,13 @@ my $print_pci_device = sub {
>>    };
>>    
> 
> 
> root at pve2:~# qm start 101
> ignoring mediated device with multifunction device
> 
> 
> with
> vmconfig
> ---------
> 
> agent: 1
> boot: order=scsi0;ide2;net0
> cores: 2
> cpu: host
> hostpci0: sharednvidia,mdev=nvidia-54
> ide2: cephfs-1:iso/jammy-live-server-amd64.iso,media=cdrom,size=1439536K
> machine: q35
> memory: 8195
> meta: creation-qemu=6.2.0,ctime=1659689043
> name: ubuntu-server-gpu
> net0: virtio=6E:67:68:AA:68:7F,bridge=vmbr0,firewall=1
> numa: 1
> ostype: l26
> parent: toto
> scsi0: ceph-vm-ct-1:vm-101-disk-0,size=32G
> scsihw: virtio-scsi-pci
> smbios1: uuid=3580645c-dd29-4ac9-8276-5a67474ce67a
> sockets: 2
> vga: virtio
> vmgenid: 1c2eb299-a6f9-4d2d-ab33-9b43ffed8c6d
> 
> 
> mapping
> -------
> 
>    cat nodes/hardware-map.conf|jq
> {
>     "digest": "4a760264e56a84da88d4362d414684db860c3406",
>     "pci": {
>       "sharednvidia": {
>         "pve1": {
>           "mdev": "1",
>           "device": "0x1c31",
>           "iommugroup": "75",
>           "subsystem-device": "0x131b",
>           "path": "0000:02:00",
>           "subsystem-vendor": "0x10de",
>           "vendor": "0x10de"
>         },
>         "pve2": {
>           "mdev": "1",
>           "iommugroup": "47",
>           "device": "0x1c31",
>           "subsystem-device": "0x131b",
>           "subsystem-vendor": "0x10de",
>           "vendor": "0x10de",
>           "path": "0000:02:00"
>         }
>       }
>     }
> }
> 
> 
> 
> generated kvm command line: (without mdev)
> 
> /usr/bin/kvm -id 101 -name ubuntu-server-gpu,debug-threads=on
> -no-shutdown -chardev
> socket,id=qmp,path=/var/run/qemu-server/101.qmp,server=on,wait=off -mon
> chardev=qmp,mode=control -chardev
> socket,id=qmp-event,path=/var/run/qmeventd.sock,reconnect=5 -mon
> chardev=qmp-event,mode=control -pidfile /var/run/qemu-server/101.pid
> -daemonize -smbios type=1,uuid=3580645c-dd29-4ac9-8276-5a67474ce67a -smp
> 4,sockets=2,cores=2,maxcpus=4 -nodefaults -boot
> menu=on,strict=on,reboot-timeout=1000,splash=/usr/share/qemu-server/bootsplash.jpg
> -vnc unix:/var/run/qemu-server/101.vnc,password=on -cpu
> host,+kvm_pv_eoi,+kvm_pv_unhalt -m 8195 -object
> memory-backend-ram,id=ram-node0,size=4097.5M -numa
> node,nodeid=0,cpus=0-1,memdev=ram-node0 -object
> memory-backend-ram,id=ram-node1,size=4097.5M -numa
> node,nodeid=1,cpus=2-3,memdev=ram-node1 -readconfig
> /usr/share/qemu-server/pve-q35-4.0.cfg -device
> vmgenid,guid=1c2eb299-a6f9-4d2d-ab33-9b43ffed8c6d -device
> usb-tablet,id=tablet,bus=ehci.0,port=1 -device
> vfio-pci,host=0000:02:00.0,id=hostpci0.0,bus=pci.0,addr=0x10.0,multifunction=on
> -device vfio-pci,host=0000:02:00.1,id=hostpci0.1,bus=pci.0,addr=0x10.1
> -device virtio-vga,id=vga,bus=pcie.0,addr=0x1 -chardev
> socket,path=/var/run/qemu-server/101.qga,server=on,wait=off,id=qga0
> -device virtio-serial,id=qga0,bus=pci.0,addr=0x8 -device
> virtserialport,chardev=qga0,name=org.qemu.guest_agent.0 -device
> virtio-serial,id=spice,bus=pci.0,addr=0x9 -chardev
> spicevmc,id=vdagent,name=vdagent -device
> virtserialport,chardev=vdagent,name=com.redhat.spice.0 -spice
> tls-port=61000,addr=127.0.0.1,tls-ciphers=HIGH,seamless-migration=on
> -device
> virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3,free-page-reporting=on
> -iscsi initiator-name=iqn.1993-08.org.debian:01:fbdf9d609751 -drive
> file=/mnt/pve/cephfs-1/template/iso/jammy-live-server-amd64.iso,if=none,id=drive-ide2,media=cdrom,aio=io_uring
> -device ide-cd,bus=ide.1,unit=0,drive=drive-ide2,id=ide2,bootindex=101
> -device virtio-scsi-pci,id=scsihw0,bus=pci.0,addr=0x5 -drive
> file=rbd:ceph-vm-ct-1/vm-101-disk-0:conf=/etc/pve/ceph.conf:id=admin:keyring=/etc/pve/priv/ceph/ceph-vm-ct-1.keyring,if=none,id=drive-scsi0,format=raw,cache=none,aio=io_uring,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=tap101i0,script=/var/lib/qemu-server/pve-bridge,downscript=/var/lib/qemu-server/pve-bridgedown,vhost=on
> -device
> virtio-net-pci,mac=6E:67:68:AA:68:7F,netdev=net0,bus=pci.0,addr=0x12,id=net0,bootindex=102
> -machine type=q35+pve0
> 
> 
> 
> 
> 
> 
> maybe not related, but after that, stop/start are not working anymore
> 
> root at pve2:~# qm stop 101
> PCI device mapping invalid (hardware probably changed): 'mdev'
> configured but should not be
> 
> root at pve2:~# qm start 101
> PCI device mapping invalid (hardware probably changed): 'mdev'
> configured but should not be
> 
> 
> 
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