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From Marcus <>
Subject Re: ALARM - ACS reboots host servers!!!
Date Mon, 03 Mar 2014 00:37:03 GMT
Also, please note that in the bug you referenced it doesn't have a
problem with the reboot being triggered, but with the fact that reboot
never completes due to hanging NFS mount (which is why the reboot
occurs, inaccessible primary storage).

On Sun, Mar 2, 2014 at 5:26 PM, Marcus <> wrote:
> Or do you mean you have multiple primary storages and this one was not
> in use and put into maintenance?
> On Sun, Mar 2, 2014 at 5:25 PM, Marcus <> wrote:
>> I'm not sure I understand. How do you expect to reboot your primary
>> storage while vms are running?  It sounds like the host is being
>> fenced since it cannot contact the resources it depends on.
>> On Sun, Mar 2, 2014 at 3:24 PM, Nux! <> wrote:
>>> On 02.03.2014 21:17, Andrei Mikhailovsky wrote:
>>>> Hello guys,
>>>> I've recently came across the bug CLOUDSTACK-5429 which has rebooted
>>>> all of my host servers without properly shutting down the guest vms.
>>>> I've simply upgraded and rebooted one of the nfs primary storage
>>>> servers and a few minutes later, to my horror, i've found out that all
>>>> of my host servers have been rebooted. Is it just me thinking so, or
>>>> is this bug should be fixed ASAP and should be a blocker for any new
>>>> ACS release. I mean not only does it cause downtime, but also possible
>>>> data loss and server corruption.
>>> Hi Andrei,
>>> Do you have HA enabled and did you put that primary storage in maintenance
>>> mode before rebooting it?
>>> It's my understanding that ACS relies on the shared storage to perform HA so
>>> if the storage goes it's expected to go berserk. I've noticed similar
>>> behaviour in Xenserver pools without ACS.
>>> I'd imagine a "cure" for this would be to use network distributed
>>> "filesystems" like GlusterFS or CEPH.
>>> Lucian
>>> --
>>> Sent from the Delta quadrant using Borg technology!
>>> Nux!

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