Re: [ovirt-users] VM Live Migration issues

Hi, The migration is working fine with Cluster Switch set to "Legacy" Mode. But I have run into a different problem. Yesterday, for some reason, I had to restart the hosts. But the Hosts never came online. Hosts were constantly in Non Responsive state. I manually fenced it, and Vds command timed out. I found that NIC was down for some reason. I brought it up and again fenced the hosts. Again the Vds command timed out. I manually attempted to restart the VDSM service, but host reported there is no such service. Starting VDSMD service resulted in failure. Finally, I had to forcefully remove the hosts, reinstalled base (CentOS 7) on hosts and re-added them to oVirt with the storage domain intact. All hosts, storage domains went online and all VMs were intact. Post reinstallation, I set the Cluster Switch mode to "Legacy" and tried migration and it worked fine. I fail to understand what went wrong while rebooting the hosts. -- Thanks & Regards, Anantha Raghava eXza Technology Consulting & Services Do not print this e-mail unless required. Save Paper & trees. On Friday 26 August 2016 10:12 PM, Anantha Raghava wrote: Hi, Then, I will switch the cluster switch type back to Legacy and then try to migrate. Will post the results here. Any other suggestions? -- Thanks & Regards, Anantha Raghava eXza Technology Consulting & Services Do not print this e-mail unless required. Save Paper & trees. On Friday 26 August 2016 09:58 PM, Yaniv Dary wrote: OVS is experimental and there is a open item on making migration work: https://bugzilla.redhat.com/show_bug.cgi?id=1362495 Yaniv Dary Technical Product Manager Red Hat Israel Ltd. 34 Jerusalem Road Building A, 4th floor Ra'anana, Israel 4350109 Tel : +972 (9) 7692306 8272306 Email: ydary(a)redhat.com IRC : ydary On Fri, Aug 26, 2016 at 11:25 AM, Anantha Raghava < raghav(a)exzatechconsulting.com&gt; wrote: > Hi, > > Not at all. > > Just newly created Virtual Machine. No user is accessing the VM yet. Only > Ubuntu Trusty Tahr (14.04) OS with oVirt Guest Agent is installed. VM and > both hosts are in the same network as well. > > Applied migration policy is "Minimum Downtime". Bandwidth limit is set to > Auto. Cluster switch is set to "OVS" I can send the screen shot tomorrow. > > Host Hardware configuration. Intel Xeon CPU, 2 Socket X 16 Core in each > socket. Installed Memory is 256 GB on each host. I have 4 X 10Gbps NIC, 2 > given for VM traffic and 2 given for iSCSI traffic. oVirt Management is on > a separate 1 X 1Gbps NIC. > > Yet, migration fails. > > -- > > Thanks & Regards, > > > Anantha Raghava eXza Technology Consulting & Services > > Do not print this e-mail unless required. Save Paper & trees. > On Friday 26 August 2016 09:31 PM, Yaniv Dary wrote: > > Is the VM very busy? > Did you apply the new cluster migration policies? > > Yaniv Dary > Technical Product Manager > Red Hat Israel Ltd. > 34 Jerusalem Road > Building A, 4th floor > Ra'anana, Israel 4350109 > > Tel : +972 (9) 7692306 > 8272306 > Email: ydary(a)redhat.com > IRC : ydary > > > On Fri, Aug 26, 2016 at 1:54 AM, Anantha Raghava < > raghav(a)exzatechconsulting.com&gt; wrote: > >> Hi, >> >> In our setup we have configured two hosts, both of same CPU type, same >> amount of memory and Master storage domain is created on iSCSI storage and >> is live. >> >> I created a single VM with Ubuntu Trusty as OS. It installed properly >> and when I attempted to migrate the running VM, the migration failed. >> >> Engine log, Host 1 log and Host 2 logs are attached for your reference. >> Since logs are running into several MBs, I have compressed them and >> attached here. >> >> Can someone help us to solve this issue? >> >> -- >> >> Thanks & Regards, >> Anantha Raghava >> >> _______________________________________________ >> Users mailing list >> Users(a)ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users >> >> > >