[ovirt-users] VM Live Migration issues
Anantha Raghava
raghav at exzatechconsulting.com
Tue Aug 30 02:28:08 UTC 2016
Hi,
Unfortunately not. Engine log may be there, if it is not rotated
already. But VDSM logs are not there at all.
I have two more servers of the same configuration. Let me try & simulate
the same situation.
--
Thanks & Regards,
Anantha Raghava
eXza Technology Consulting & Services
Do not print this e-mail unless required. Save Paper & trees.
On Monday 29 August 2016 12:54 PM, Yaniv Kaul wrote:
> Did you happen to save the logs? They might reveal the issue.
> TIA,
> Y.
>
> On Sat, Aug 27, 2016 at 1:25 PM, Anantha Raghava
> <raghav at exzatechconsulting.com <mailto:raghav at exzatechconsulting.com>>
> wrote:
>
> 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
>>> <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 <tel:%2B972%20%289%29%207692306> 8272306
>>> Email: ydary at redhat.com <mailto:ydary at redhat.com> IRC : ydary
>>>
>>> On Fri, Aug 26, 2016 at 11:25 AM, Anantha Raghava
>>> <raghav at exzatechconsulting.com
>>> <mailto:raghav at exzatechconsulting.com>> 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
>>>> <tel:%2B972%20%289%29%207692306> 8272306 Email:
>>>> ydary at redhat.com <mailto:ydary at redhat.com> IRC : ydary
>>>>
>>>> On Fri, Aug 26, 2016 at 1:54 AM, Anantha Raghava
>>>> <raghav at exzatechconsulting.com
>>>> <mailto:raghav at exzatechconsulting.com>> 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
>>>>
>>>>
>>>>
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>>>> <http://lists.ovirt.org/mailman/listinfo/users>
>>>>
>>>>
>>>
>>>
>>
>
>
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