Hi All,
I am trying to use dpdkvhostuser to pass traffic to VM.
Here is my basic system configuration.
Host and VM OS: Fedora server 23
DPDK 2.2.0
OVS 2.50
QEMU 2.4.1
When I tried to start the VM, it got the following error:
qemu-system-x86_64: -object
memory-backend-file,id=mem,size=3072M,mem-path=/dev/hugepages,share=on:
unable to map backing store for hugepages: Cannot allocate memory
I must did some thing wrong.
Any help is appreciated.
Thanks,
Charlie
More details
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[cli@cli-desktop ~]$ grep Huge /proc/meminfo
AnonHugePages: 0 kB
HugePages_Total: 4
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 1048576 kB
[cli@cli-desktop utilities]$ sudo ./ovs-vsctl show
4fcf27a6-edbd-4770-ab39-f440e3532bcc
Bridge "br0"
Port "vhost0"
Interface "vhost0"
type: dpdkvhostuser
Port "vhost1"
Interface "vhost1"
type: dpdkvhostuser
Port "br0"
Interface "br0"
type: internal
Port "dpdk1"
Interface "dpdk1"
type: dpdk
Port "dpdk0"
Interface "dpdk0"
type: dpdk
[cli@cli-desktop utilities]$ sudo ./ovs-vsctl list-ports br0
dpdk0
dpdk1
vhost0
vhost1
[cli@cli-desktop utilities]$ sudo ./ovs-ofctl dump-flows br0
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=61391.667s, table=0, n_packets=0, n_bytes=0,
idle_age=61391, in_port=1 actions=output:3
cookie=0x0, duration=61391.650s, table=0, n_packets=0, n_bytes=0,
idle_age=61391, in_port=2 actions=output:4
cookie=0x0, duration=61391.632s, table=0, n_packets=0, n_bytes=0,
idle_age=61391, in_port=3 actions=output:1
cookie=0x0, duration=61391.616s, table=0, n_packets=0, n_bytes=0,
idle_age=61391, in_port=4 actions=output:2
[cli@cli-desktop utilities]$ sudo qemu-system-x86_64 -m 3072 -cpu host -hda
/home/cli/VM1/FC23.qcow2 -boot c -enable-kvm -pidfile /home/cli/VM1/vm1.pid
-monitor unix:/home/cli/VM1/vm1monitor,server,nowait -name 'FC23-VM1' -net
none -no-reboot -object
memory-backend-file,id=mem,size=3072M,mem-path=/dev/hugepages,share=on
-numa node,memdev=mem -mem-prealloc -chardev
socket,id=char1,path=/usr/local/var/run/openvswitch/vhost0 -netdev
type=vhost-user,id=net1,chardev=char1,vhostforce -device
virtio-net-pci,netdev=net1,mac=00:00:00:00:00:01,csum=off,gso=off,guest_tso4=off,guest_tso6=off,guest_ecn=off,mrg_rxbuf=off
-chardev socket,id=char2,path=/usr/local/var/run/openvswitch/vhost1 -netdev
type=vhost-user,id=net2,chardev=char2,vhostforce -device
virtio-net-pci,netdev=net2,mac=00:00:00:00:00:02,csum=off,gso=off,guest_tso4=off,guest_tso6=off,guest_ecn=off,mrg_rxbuf=off
--nographic -vnc :14
qemu-system-x86_64: -object
memory-backend-file,id=mem,size=3072M,mem-path=/dev/hugepages,share=on:
unable to map backing store for hugepages: Cannot allocate memory
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