live migration issues after libvirtd restart

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi, All 

There is following issue in latest libvirt-4.5.0-10.el7_6.12 package, which could prevent live VM migrations with web sockets enabled, when libvirtd were restarted prior to migration.

Environment:
# uname -a
Linux inv-cp1-hv3-centos7 3.10.0-957.12.2.el7.x86_64 #1 SMP Tue May 14 21:24:32 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

# cat /etc/redhat-release 
CentOS Linux release 7.6.1810 (Core) 

# rpm -qa | grep libvirt-4
libvirt-4.5.0-10.el7_6.12.x86_64

# rpm -qa | grep qemu-kvm
qemu-kvm-common-ev-2.12.0-18.el7_6.5.1.x86_64
qemu-kvm-ev-2.12.0-18.el7_6.5.1.x86_64
qemu-kvm-tools-ev-2.12.0-18.el7_6.5.1.x86_64


Repro steps:
1. start VM with following screen configuration:
<graphics type="vnc" listen="0.0.0.0" passwd="vnc_password" port="-1" auto-port="yes" websocket="-1"/>

2. check VM XML (migratable):
#virsh dumpxml 1 > | grep vnc
<graphics type="vnc" listen="0.0.0.0" passwd="vnc_password" port="-1" auto-port="yes" websocket="-1"/>

3. restart libvirtd
# systemctl restart libvirtd.service

4. check VM XML config again
#virsh dumpxml 1 > | grep vnc
<graphics type="vnc" listen="0.0.0.0" passwd="vnc_password" port="-1" auto-port="yes" websocket="5700"/>

5. try to migrate this VM to hypervisor with already running VM and you will get following error
error: internal error: Failed to reserve port 5700

It happens when on destination hypervisor there is VM running with web socket port 5700.

This issue was fixed since libvirt-4.6.0 release.
I've retested it with libvirt-4.9.0 and libvirt-5.0.0 from http://mirror.centos.org/centos/7/virt/x86_64/libvirt-latest/ repo. And it actually fixed here.

Interesting to know when newer version of libvirt(at least 4.6.0 of 4.5.0 with fix) will be available in official centos updates repo?

Thanks a lot,
Oleksandr
_______________________________________________
CentOS-virt mailing list
CentOS-virt@xxxxxxxxxx
https://lists.centos.org/mailman/listinfo/centos-virt

[Index of Archives]     [CentOS Users]     [Linux Media]     [Asterisk]     [DCCP]     [Netdev]     [X.org]     [Xfree86]     [Linux USB]

  Powered by Linux