[Linux-cluster] failover domain and service start

emmanuel segura emi2fast at gmail.com
Thu Nov 21 23:50:12 UTC 2013 

but did you configure your vm with xen tools or using virt-manager?


2013/11/22 Paras pradhan <pradhanparas at gmail.com>

> Well no i don't want to use virsh.   But as we are debugging with virsh
> now i found a strange issue.
>
> I exported an xml file and imported to all nodes . Ran
>
>
> ---
> name="guest1" path="/vms_c"
>
> export OCF_RESKEY_name="guest1" ; OCF_RESKEY_path="/vms_c"
>
> set -x
> /usr/share/cluster/vm.sh start
> set +x
>
> --
> vm starts now. BUT from a cluster service : cluvscam -e vm:guest1 , same
> error.
>
>
> So if i populate all my domains' config files to all my cluser nodes and
> make use_virsh=1, then the issue is resolved. But this is a lot of work for
> those who have hundreds of vm.
>
> vm.start uses virsh . Is there a way to tell him not use virsh?
>
>
> Thanks
> Paras.
>
>
> On Thu, Nov 21, 2013 at 5:19 PM, emmanuel segura <emi2fast at gmail.com>wrote:
>
>> if you are using virsh for manage your vms, change this in your
>> cluster.conf
>>
>> from
>> use_virsh="0"
>> to
>> use_virsh="1"
>>
>>
>> 2013/11/22 Paras pradhan <pradhanparas at gmail.com>
>>
>>> I think i found the problem.
>>>
>>> virsh list --all does not show my vm . This is because it was created on
>>> another node. and another node has it. Now I want to start the service on a
>>> different node in which it was not created or where virsh list --all does
>>> not have an entry. Is it possible to create this entry using a xen config
>>> file?Looks like this is now a Xen issue rather than a linux-cluster issue .
>>> :)
>>>
>>> Paras.
>>>
>>>
>>>
>>> On Thu, Nov 21, 2013 at 4:58 PM, emmanuel segura <emi2fast at gmail.com>wrote:
>>>
>>>> 1:did you verify your xen livemigration configuration?
>>>> 2: where you vm disk reside?
>>>> 3: can you see your vm defined on every cluster node with xm list?
>>>>
>>>>
>>>> 2013/11/21 Paras pradhan <pradhanparas at gmail.com>
>>>>
>>>>> This is what I get
>>>>>
>>>>> Hypervisor: xen
>>>>> Management tool: virsh
>>>>> Hypervisor URI: xen:///
>>>>> Migration URI format: xenmigr://target_host/
>>>>> Virtual machine guest1 is error: failed to get domain 'guest1'
>>>>> error: Domain not found: xenUnifiedDomainLookupByName
>>>>>
>>>>> <debug>  virsh -c xen:/// start guest1
>>>>> error: failed to get domain 'guest1'
>>>>> error: Domain not found: xenUnifiedDomainLookupByName
>>>>>
>>>>> ++ printf '\033]0;%s@%s:%s\007' root vtst3 '~'
>>>>> [root at cvtst3 ~]# set +x
>>>>> + set +x
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>>
>>>>>  I am wondering why it failed to get domain .
>>>>>
>>>>>
>>>>> -Paras.
>>>>>
>>>>>
>>>>>
>>>>> On Thu, Nov 21, 2013 at 4:43 PM, emmanuel segura <emi2fast at gmail.com>wrote:
>>>>>
>>>>>> yes
>>>>>>
>>>>>>
>>>>>> 2013/11/21 Paras pradhan <pradhanparas at gmail.com>
>>>>>>
>>>>>>> Well it is guest1. Isn't it?.
>>>>>>>
>>>>>>> <vm autostart="1" domain="myfd1" exclusive="0" max_restarts="0"
>>>>>>> name="guest1" path="/vms_c" recovery="restart" restart_expire_time="0"
>>>>>>> use_virsh="0"/>
>>>>>>>
>>>>>>> It is a vm service if it matters.
>>>>>>>
>>>>>>> -Paras.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Nov 21, 2013 at 4:22 PM, emmanuel segura <emi2fast at gmail.com
>>>>>>> > wrote:
>>>>>>>
>>>>>>>> use the servicename you defined in your cluster.conf
>>>>>>>>
>>>>>>>>
>>>>>>>> 2013/11/21 Paras pradhan <pradhanparas at gmail.com>
>>>>>>>>
>>>>>>>>> Says:
>>>>>>>>>
>>>>>>>>> Running in test mode.
>>>>>>>>> No resource guest1 of type service found
>>>>>>>>>
>>>>>>>>> -Paras.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Thu, Nov 21, 2013 at 4:07 PM, emmanuel segura <
>>>>>>>>> emi2fast at gmail.com> wrote:
>>>>>>>>>
>>>>>>>>>> rg_test test /etc/cluster/cluster.conf start service guest1
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> 2013/11/21 Paras pradhan <pradhanparas at gmail.com>
>>>>>>>>>>
>>>>>>>>>>> Hi,
>>>>>>>>>>>
>>>>>>>>>>> My failover domain looks like this:
>>>>>>>>>>>
>>>>>>>>>>> <failoverdomain name="myfd1" nofailback="1" ordered="1"
>>>>>>>>>>> restricted="0">
>>>>>>>>>>>                                 <failoverdomainnode name="vtst1"
>>>>>>>>>>> priority="1"/>
>>>>>>>>>>>                                 <failoverdomainnode name="vtst3"
>>>>>>>>>>> priority="2"/>
>>>>>>>>>>>                                 <failoverdomainnode name="vtst2"
>>>>>>>>>>> priority="3"/>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>                         </failoverdomain>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> I have vm service that uses this failover domain. If my node
>>>>>>>>>>> vtst1 is offline, the service doesnot start on vtst3 which is 2nd in the
>>>>>>>>>>> priority.
>>>>>>>>>>>
>>>>>>>>>>> I tried to start it with: clusvcadm -e vm:guest1   and even with
>>>>>>>>>>> -F and -m option.
>>>>>>>>>>>
>>>>>>>>>>> All i see is this error:
>>>>>>>>>>>
>>>>>>>>>>> Nov 21 15:40:29 vtst3 clurgmgrd[13911]: <notice> start on vm
>>>>>>>>>>> "guest1" returned 1 (generic error)
>>>>>>>>>>> Nov 21 15:40:29 vtst3 clurgmgrd[13911]: <warning> #68: Failed to
>>>>>>>>>>> start vm:guest1; return value: 1
>>>>>>>>>>> Nov 21 15:40:29 vtst3 clurgmgrd[13911]: <notice> Stopping
>>>>>>>>>>> service vm:guest1
>>>>>>>>>>> Nov 21 15:40:35 vtst3 clurgmgrd[13911]: <notice> Service
>>>>>>>>>>> vm:guest1 is recovering
>>>>>>>>>>> Nov 21 15:40:35 vtst3 clurgmgrd[13911]: <warning> #71:
>>>>>>>>>>> Relocating failed service vm:guest1
>>>>>>>>>>> Nov 21 15:40:35 vtst3 clurgmgrd[13911]: <notice> Service
>>>>>>>>>>> vm:guest1 is stopped
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> How do I debug?
>>>>>>>>>>> Thanks!
>>>>>>>>>>> Paras.
>>>>>>>>>>>
>>>>>>>>>>> --
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>>>>>>>>>>> Linux-cluster at redhat.com
>>>>>>>>>>> https://www.redhat.com/mailman/listinfo/linux-cluster
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> --
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>>
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