Hello! Please ignre this: 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 Now it works fine. But broken name which refer to /proc/* instead of /sys/* still an issue. On Fri, Jun 19, 2015 at 11:55 AM, Pavel Odintsov <pavel.odint...@gmail.com> wrote: > 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 -- 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
