[Linux-cluster] failover domain and service start
Paras pradhan
pradhanparas at gmail.com
Fri Nov 22 15:49:58 UTC 2013
I use virt-install to create virtual machines. Is there a way to debug why
clusvcadm -e vm:guest1 is failing? vm.sh seems to use virsh and my
cluster.conf has use_virsh=0
Thanks
Paras.
On Nov 21, 2013 5:53 PM, "emmanuel segura" <emi2fast at gmail.com> wrote:
> 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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>>>>>>>>>>>> https://www.redhat.com/mailman/listinfo/linux-cluster
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
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>>>>>>>>>
>>>>>>>>>
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>
>
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>
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