[Gluster-users] Does QEMU offer High Availability

[Paul Boven]

Hi Daniel,

I'm using KVM/Qemu with GlusterFS. The virtual machine images are stored 
on the Gluster filesystem, so there is always a copy of the virtual 
machine image on both cluster nodes. And you can even do a live migrate 
of a running guest from one node to the other.

So if a host fails, all its guests will die with it, but you can restart 
them on the other node if you have enough resources.

Regards, Paul Boven.

On 03/18/2014 01:51 PM, Daniel Baker wrote:
>
> Hi Lucian,
>
> but Glusterfs is at least trying to replicate the QEMU image onto the
> other node ?  That's the whole point of the replication isn’t it ?
>
>
> Thanks for the help,
>
> Dan
>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Mon, 17 Mar 2014 20:29:30 +0700
>> From: Daniel Baker <info at collisiondetection.biz>
>> To: gluster-users at gluster.org
>> Subject: [Gluster-users] Does QEMU offer High Availability
>> Message-ID: <5326F8BA.7010300 at collisiondetection.biz>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> HI all,
>>
>> If I use QEMU in Glusterfs 3.4.2 can I achieve true High Availability.
>>
>> If I have two nodes that are clustering a QEMU image and one of them
>> goes down will the other QEMU image take its place.
>>
>> Can I really achieve that ?
>>
>>
>>
>> Thanks,
>>
>> Dan
>>
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Mon, 17 Mar 2014 13:48:45 +0000
>> From: Nux! <nux at li.nux.ro>
>> To: gluster-users at gluster.org
>> Subject: Re: [Gluster-users] Does QEMU offer High Availability
>> Message-ID: <c5ba49ac0de0faf0ab1257a7f1800f31 at li.nux.ro>
>> Content-Type: text/plain; charset=UTF-8; format=flowed
>>
>> On 17.03.2014 13:29, Daniel Baker wrote:
>>> HI all,
>>>
>>> If I use QEMU in Glusterfs 3.4.2 can I achieve true High Availability.
>>>
>>> If I have two nodes that are clustering a QEMU image and one of them
>>> goes down will the other QEMU image take its place.
>>>
>>> Can I really achieve that ?
>>
>> Dan,
>>
>> This is not really a discussion for the gluster lists.
>>
>> You should ask KVM people, but to answer you briefly:
>> - No, KVM is just a hypervisor, it runs virtual machines and that's all
>> it does.
>> You need to run additional RedHat clustering stuff around it to achieve
>> HA.
>>
>> HTH
>> Lucian
>>
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-- 
Paul Boven <boven at jive.nl> +31 (0)521-596547
Unix/Linux/Networking specialist
Joint Institute for VLBI in Europe - www.jive.nl
VLBI - It's a fringe science