| Summary: | Assignment of BCM5719 NIC to a guest VM failed when vt-d enabled and intel_iommu=on | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | yaoal <yaoal1> | ||||||
| Component: | libvirt | Assignee: | Pavel Hrdina <phrdina> | ||||||
| Status: | CLOSED NOTABUG | QA Contact: | Virtualization Bugs <virt-bugs> | ||||||
| Severity: | high | Docs Contact: | |||||||
| Priority: | high | ||||||||
| Version: | 7.2 | CC: | dyuan, fchen16, hehy1, jishao, jkachuck, kstansel, phrdina, rbalakri, shyu, yangsp1, yaoal1 | ||||||
| Target Milestone: | rc | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | x86_64 | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2016-05-11 06:18:30 UTC | Type: | Bug | ||||||
| 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: | |||||||||
| Bug Blocks: | 1274381 | ||||||||
| Attachments: |
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Description
yaoal
2016-04-27 07:13:11 UTC
add related redhat engineers Created attachment 1151242 [details]
kernel start log
Created attachment 1151244 [details]
when add NIC to a guest,the Dmesg log
Hi, could you please provide version of libvirt, qemu and kernel and also output of "virt-host-validate" command? Thanks. Hi :
Finally i got the infomation，see below：
[root@localhost ~]# libvirtd --version
libvirtd (libvirt) 1.2.17
[root@localhost ~]# virsh --version
1.2.17
[root@localhost ~]# qemu-img --help | grep version
qemu-img version 1.5.3, Copyright (c) 2004-2008 Fabrice Bellard
conversion. If the number of bytes is 0, the source will not be scanned for
[root@localhost ~]# /usr/libexec/qemu-kvm -version
QEMU emulator version 1.5.3 (qemu-kvm-1.5.3-105.el7), Copyright (c) 2003-2008 Fabrice Bellard
[root@localhost ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.2 (Maipo)
[root@localhost ~]# cat /proc/version
Linux version 3.10.0-327.el7.x86_64 (mockbuild.eng.bos.redhat.com) (gcc version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC) ) #1 SMP Thu Oct 29 17:29:29 EDT 2015
[root@localhost ~]# uname -a
Linux localhost.localdomain 3.10.0-327.el7.x86_64 #1 SMP Thu Oct 29 17:29:29 EDT 2015 x86_64 x86_64 x86_64 GNU/Linux
[root@localhost ~]# virt-host-validate
QEMU: Checking for hardware virtualization : PASS
QEMU: Checking for device /dev/kvm : PASS
QEMU: Checking for device /dev/vhost-net : PASS
QEMU: Checking for device /dev/net/tun : PASS
LXC: Checking for Linux >= 2.6.26 : PASS
[root@localhost ~]#
Hi: Do you still need any more info? Hi, I didn't realized that RHEL-7.2 doesn't have all the checks in virt-host-validate as upstream libvirt. Are you sure, that the IOMMU in bios is enabled and also the intel_iommu=on is on the command line? Please check again, that the vt-d is enabled in bios and the intel_iommu=on is properly passed to the kernel. If everything works, you should be able to see several iommu groups inside /sys/kernel/iommu_groups/ directory. I've tried it and everything works. Hi: After checking with our customer, Now they can assign BCM5719 NIC to VM now; They said they have made some error settings in bios and kernel before; thanks for helping; |