Hello! Some details.
Error: echo '2' > /sys/bus/pci/devices/0000:00:06.0/sriov_numvfs -bash: /sys/bus/pci/devices/0000:00:06.0/sriov_numvfs: Permission denied Definitely related with non existent proc fs path: find /proc/|grep sriov_numvfs|wc -l 0 It's definitely a bug. Because I could find this pseudo files in /sys: root@filter ~ # find /sys/|grep vfs /sys/devices/pci0000:00/0000:00:02.0/0000:03:00.0/sriov_numvfs /sys/devices/pci0000:00/0000:00:02.0/0000:03:00.0/sriov_totalvfs /sys/devices/pci0000:00/0000:00:02.0/0000:03:00.1/sriov_numvfs /sys/devices/pci0000:00/0000:00:02.0/0000:03:00.1/sriov_totalvfs root@filter ~ # find /proc/|grep vfs /proc/sys/vm/vfs_cache_pressure But I still can't use sriov_numvfs from there: cat /sys/devices/pci0000:00/0000:00:02.0/0000:03:00.0/sriov_totalvfs 63 cat /sys/devices/pci0000:00/0000:00:02.0/0000:03:00.1/sriov_totalvfs 63 echo 2 > /sys/devices/pci0000:00/0000:00:02.0/0000:03:00.0/sriov_numvfs -bash: echo: write error: Function not implemented echo 2 > /sys/devices/pci0000:00/0000:00:02.0/0000:03:00.1/sriov_numvfs -bash: echo: write error: Function not implemented dmesg|tail -n 100 [3004270.392052] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver - version 3.19.1-k [3004270.392316] ixgbe: Copyright (c) 1999-2014 Intel Corporation. [3004295.119478] vfio-pci 0000:03:00.0: Driver doesn't support SRIOV configuration via sysfs [3004299.761902] vfio-pci 0000:03:00.1: Driver doesn't support SRIOV configuration via sysfs :( On Fri, Jun 19, 2015 at 11:37 AM, Pavel Odintsov <pavel.odint...@gmail.com> wrote: > Hello, folks! > > I have KVM VM with bypassed PCI-E 82599 two port NIC. > > Driver version: 4.0.3 at Debian Jessie 3.16 kernel. > > lspci -v|grep Eth > 00:02.0 Ethernet controller: Realtek Semiconductor Co., Ltd. > RTL-8100/8101L/8139 PCI Fast Ethernet Adapter (rev 20) > 00:05.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit > SFI/SFP+ Network Connection (rev 01) > Subsystem: Intel Corporation Ethernet Server Adapter X520-2 > 00:06.0 Ethernet controller: Intel Corporation 82599ES 10-Gigabit > SFI/SFP+ Network Connection (rev 01) > Subsystem: Intel Corporation Ethernet Server Adapter X520-2 > > And I want to use VF inside this KVM VM. > > And I doing following: > rmmod ixgbe ixgbevf > modprobe ixgbe max_vfs=2,2 > modprobe ixgbevf > > But after this operation I haven't saw virtual functions in lspci output: > lspci -tv > -[0000:00]-+-00.0 Intel Corporation 440FX - 82441FX PMC [Natoma] > +-01.0 Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] > +-01.1 Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II] > +-01.3 Intel Corporation 82371AB/EB/MB PIIX4 ACPI > +-02.0 Realtek Semiconductor Co., Ltd. RTL-8100/8101L/8139 > PCI Fast Ethernet Adapter > +-03.0 Intel Corporation 82801I (ICH9 Family) USB UHCI Controller > #1 > +-03.1 Intel Corporation 82801I (ICH9 Family) USB UHCI Controller > #2 > +-03.2 Intel Corporation 82801I (ICH9 Family) USB UHCI Controller > #3 > +-03.7 Intel Corporation 82801I (ICH9 Family) USB2 EHCI > Controller #1 > +-04.0 Red Hat, Inc Virtio memory balloon > +-05.0 Intel Corporation 82599ES 10-Gigabit SFI/SFP+ > Network Connection > +-06.0 Intel Corporation 82599ES 10-Gigabit SFI/SFP+ > Network Connection > \-07.0 Cirrus Logic GD 5446 > > And haven't saw any additional interfaces: > > ip link show > 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN > mode DEFAULT group default > link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 > 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast > state UP mode DEFAULT group default qlen 1000 > link/ether 52:54:00:ec:be:23 brd ff:ff:ff:ff:ff:ff > 19: eth6: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode > DEFAULT group default qlen 1000 > link/ether 90:e2:ba:83:3f:24 brd ff:ff:ff:ff:ff:ff > 20: eth5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP > mode DEFAULT group default qlen 1000 > link/ether 90:e2:ba:83:3f:25 brd ff:ff:ff:ff:ff:ff > > > I saw this error in dmesg: > > [848550.356391] ixgbe 0000:00:06.0: Enabling SR-IOV VFs using the > max_vfs module parameter is deprecated. > [848550.356398] ixgbe 0000:00:06.0: Please use the pci sysfs interface > instead. Ex: > [848550.356403] ixgbe 0000:00:06.0: echo '2' > > /sys/bus/pci/devices/0000:00:06.0/sriov_numvfs > [848705.672383] ixgbe 0000:00:06.0 (unregistered net_device): Failed > to enable PCI sriov: -38 <------- COULD BE IMPORTANT > > And try another approach: > rmmod ixgbe ixgbevf > > modprobe ixgbe > echo '2' > /sys/bus/pci/devices/0000:00:06.0/sriov_numvfs > echo '2' > /sys/bus/pci/devices/0000:00:05.0/sriov_numvfs > > And it's not working at all: > echo '2' > /sys/bus/pci/devices/0000:00:06.0/sriov_numvfs > -bash: /sys/bus/pci/devices/0000:00:06.0/sriov_numvfs: Permission denied > > Is it possible to use VF inside KVM VM? > > -- > Sincerely yours, Pavel Odintsov -- Sincerely yours, Pavel Odintsov ------------------------------------------------------------------------------ _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired
