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Subject: Re: Self-fencing when storage not available
To: users@cloudstack.apache.org
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From: Vladislav Nazarenko <vladislav.nazarenko@gmail.com>
Message-ID: <56B38BB4.1070908@gmail.com>
Date: Thu, 4 Feb 2016 18:34:44 +0100
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So ... found some information about this ... looks like this is an 
annoying problem (bug), which isn't going to be fixed ... But at least 
there is a possibility to change the behavior modifying the script

  - https://admintweets.wordpress.com/tag/cloudstack-2/
  - https://www.rootusers.com/edit-the-xenserver-storage-heartbeat/
  - https://issues.apache.org/jira/browse/CLOUDSTACK-3367

Thanks a lot, guys ..

On 03.02.2016 20:05, Glenn Wagner wrote:
> Hi
>
> As Lucian said , you can edit the script and remove the reboot , but yes this is the normal behaviour of the script
>
> Glenn
>
>
> -----Original Message-----
> From: Nux! [mailto:nux@li.nux.ro]
> Sent: Wednesday, 03 February 2016 8:32 PM
> To: users@cloudstack.apache.org
> Subject: Re: Self-fencing when storage not available
>
> You can modify the script to not reboot, but until we find a better way to deal with it this is correct behaviour. It sucks it reboots VMs on healthy storage though.
>
> --
> Sent from the Delta quadrant using Borg technology!
>
> Nux!
> www.nux.ro
>
> ----- Original Message -----
>> From: "Vladislav Nazarenko" <vladislav.nazarenko@gmail.com>
>> To: users@cloudstack.apache.org
>> Sent: Wednesday, 3 February, 2016 16:24:34
>> Subject: Re: Self-fencing when storage not available
>> Hi Glenn,
>>
>> we use KVM ... I also found the script:
>> /usr/share/cloudstack-common/scripts/vm/hypervisor/kvm/kvmheartbeat.sh
>>
>> Just wondering if we can avoid rebooting ...
>>
>> Thanks
>> Vlad
>>
>> On 03.02.2016 16:57, Glenn Wagner wrote:
>>> Hi Vlad,
>>>
>>> Can I ask what hypervisor are you using?
>>> The default action is to reboot the hosts
>>>
>>> This is done in the heatbeat file on xenserver
>>> /opt/xensource/bin/xenheartbeat.sh
>>>
>>> Thanks
>>> Glenn
>>>
>>>
>>>
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>>> -----Original Message-----
>>> From: Vladislav Nazarenko [mailto:vladislav.nazarenko@gmail.com]
>>> Sent: Wednesday, 03 February 2016 5:08 PM
>>> To: users@cloudstack.apache.org
>>> Subject: Self-fencing when storage not available
>>>
>>> Hi All,
>>>
>>> I'm testing Cloudstack 4.6 now
>>>
>>> When doing some tests with storage (nfs), I was wondering, that the
>>> hosts self-fence itself by reboot, when a storage not writable ...
>>>
>>> Even more, my cluster had a working storage and I added one more,
>>> which was not writable due to missing user permissions... So
>>> effectively all the VMs hard drive were located on the working
>>> storage, but the problem with permissions on the new one causes the
>>> entire cluster to reboot :(
>>>
>>> Is this a bug or a correct behavior?
>>>
>>> Is it able to avoid rebooting at least?
>>>
>>> Thank you in advance
>>> Vlad
>>>
>>>
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