| Summary: | vhost-user interface cannot get ip if host is a numa machine | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Marcel Kolaja <mkolaja> |
| Component: | qemu-kvm-rhev | Assignee: | Victor Kaplansky <vkaplans> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | high | ||
| Version: | 7.2 | CC: | ailan, didier.pallard, dyuan, jean-mickael.guerin, jherrman, jsuchane, juzhang, knoel, lhuang, michen, mst, mzhan, pezhang, samuel.gauthier, snagar, victork, vincent.jardin, virt-maint, vkaplans, weliao, xfu |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-rhev-2.3.0-31.el7_2.9 | Doc Type: | Bug Fix |
| Doc Text: |
Using a vhost-net device in a guest running on a NUMA host in some cases prevented the guest from obtaining a dynamic IP address. This update ensures that regions with different file handlers cannot be merged, which allows vhost-net devices to work properly.
|
Story Points: | --- |
| Clone Of: | 1286492 | Environment: | |
| Last Closed: | 2016-04-04 01:17:19 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Bug Depends On: | 1286492 | ||
| Bug Blocks: | |||
|
Description
Marcel Kolaja
2016-03-07 08:49:15 UTC
Fix included in qemu-kvm-rhev-2.3.0-31.el7_2.9 I cannot reproduce this problem with lastest 7.2.z qemu-kvm-rhev + libvirt
steps:
1.
# rpm -q libvirt
libvirt-1.2.17-13.el7_2.4.x86_64
# rpm -q qemu-kvm-rhev
qemu-kvm-rhev-2.3.0-31.el7_2.10.x86_64
# numactl --har
available: 2 nodes (0-1)
node 0 cpus: 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23
node 0 size: 16362 MB
node 0 free: 4320 MB
node 1 cpus: 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31
node 1 size: 16384 MB
node 1 free: 3084 MB
node distances:
node 0 1
0: 10 11
1: 11 10
2.
# cat /sys/devices/system/node/node1/hugepages/hugepages-2048kB/free_hugepages
3995
# cat /sys/devices/system/node/node0/hugepages/hugepages-2048kB/free_hugepages
4000
3.
# cat run-slirp.sh
#!/bin/sh -x
/usr/libexec/qemu-kvm -enable-kvm \
-net none \
-net socket,vlan=0,udp=localhost:4444,localaddr=localhost:5555 \
-net user,vlan=0
# ./vhost-user-bridge -l localhost:4444 -r localhost:5555 -u /tmp/vubr.sock &
# chown qemu:qemu /tmp/vubr.sock
4.
# virsh dumpxml rhel7.0-rhel
<memoryBacking>
<hugepages>
<page size='2048' unit='KiB'/>
</hugepages>
</memoryBacking>
...
<cpu>
<numa>
<cell id='0' cpus='0-1,4-6,10-12' memory='1048576' unit='KiB' memAccess='shared'/>
<cell id='1' cpus='2-3' memory='1048576' unit='KiB' memAccess='shared'/>
<cell id='2' cpus='7' memory='1048576' unit='KiB' memAccess='shared'/>
<cell id='3' cpus='8-9' memory='1048576' unit='KiB' memAccess='shared'/>
<cell id='4' cpus='13-31' memory='1048576' unit='KiB' memAccess='shared'/>
</numa>
</cpu>
...
<interface type='vhostuser'>
<mac address='54:52:00:ee:2c:01'/>
<source type='unix' path='/tmp/vubr.sock' mode='client'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</interface>
5.
# virsh start rhel7.0-rhel
Domain rhel7.0-rhel started
6.
LOGIN guest:
# dhclient -d
and that interface can get ip in guest.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2016:0587 |