[one-users] infiniband

Wed May 9 23:46:14 PDT 2012

Just added the vmm driver for the IPoIB NAT stuff

On Thu, May 10, 2012 at 2:07 AM, Shankhadeep Shome <shank15217 at gmail.com>wrote:

> Its not clear where I would upload the drivers to, I created a wiki
> account and a wiki page for 1-to-1 NAT configuration for IPoIB. I can just
> send you the tar file with the updated driver.
>
> Shankhadeep
>
>
> On Tue, May 8, 2012 at 9:47 AM, Jaime Melis <jmelis at opennebula.org> wrote:
>
>> Hi Shankhadeep,
>>
>> I think the community wiki site is the best place to upload these drivers
>> to:
>> http://wiki.opennebula.org/
>>
>> It's open to registration let me know if you run into any issues.
>>
>> About the blog post, our community manager will send you your login info
>> in a PM.
>>
>> Thanks!
>>
>> Cheers,
>> Jaime
>>
>>
>> On Mon, May 7, 2012 at 7:42 PM, Shankhadeep Shome <shank15217 at gmail.com>wrote:
>>
>>> Sure, where and how do I do it? I noticed that you have a community wiki
>>> site. Do i upload the driver and make an entry there?
>>>
>>> Shankhadeep
>>>
>>>
>>> On Mon, May 7, 2012 at 11:54 AM, Jaime Melis <jmelis at opennebula.org>wrote:
>>>
>>>> Hello Shankhadeep,
>>>>
>>>> that sounds really nice. Would you be interested in contributing your
>>>> code to OpenNebula's ecosystem and/or publishing an entry in opennebula's
>>>> blog?
>>>>
>>>> Regards,
>>>> Jaime
>>>>
>>>>
>>>> On Sun, May 6, 2012 at 5:39 AM, Shankhadeep Shome <shank15217 at gmail.com
>>>> > wrote:
>>>>
>>>>>
>>>>>
>>>>> On Sat, May 5, 2012 at 11:38 PM, Shankhadeep Shome <
>>>>> shank15217 at gmail.com> wrote:
>>>>>
>>>>>> Hi Chris
>>>>>>
>>>>>> We have a solution we are using on Oracle Exalogic hardware (we are
>>>>>> using the bare metal boxes and gateway switches). I think I understand the
>>>>>> requirement, IB accessible storage from VMs is possible however its a bit
>>>>>> convoluted. Our solution was to create a one-to-one NAT from the VMs to the
>>>>>> IB IPoIB network. This allows the VMs to mount storage natively over the IB
>>>>>> network. The performance is pretty good, about 9Gbps per node with 64k MTU
>>>>>> sizes.  We created an open nebula driver for this and I'm happy to share it
>>>>>> with the community. The driver handles VM migrations by enabling/diabling
>>>>>> ip aliases on the host and can also be used to manipulate iptable rules on
>>>>>> source and destination when open nebula moves VMs around.
>>>>>>
>>>>>> Shankhadeep
>>>>>>
>>>>>>
>>>>>> On Sat, May 5, 2012 at 5:42 PM, Chris Barry <cbarry at rjmetrics.com>wrote:
>>>>>>
>>>>>>> Reading more, I see that the available methods for block store are
>>>>>>> iSCSI, and that the LUNS are attached to the host. From there, a symlink
>>>>>>> tree exposes the target to the guest in a predictable way on every host.
>>>>>>>
>>>>>>> So then to modify my question a bit, are all LUNs attached to all
>>>>>>> hosts simultaneously? Or does the attachment only happen when a migration
>>>>>>> is to occur? Also, is the LUN put into a read-only mode or something during
>>>>>>> migration on the original host to protect the data? Or, must a clustering
>>>>>>> filesystem be employed?
>>>>>>>
>>>>>>> Guess I have a lot to read :)
>>>>>>>
>>>>>>> Thanks
>>>>>>> -C
>>>>>>>
>>>>>>>
>>>>>>> On Sat, May 5, 2012 at 5:23 PM, Chris Barry <cbarry at rjmetrics.com>wrote:
>>>>>>>
>>>>>>>> Hi Gubda,
>>>>>>>>
>>>>>>>> Thank you for replying. My goal was to use a single shared iso
>>>>>>>> image to boot from, and use an in-memory minimal linux on each node that
>>>>>>>> had no 'disk' at all, then to mount logical data volume(s) from a
>>>>>>>> centralized storage system. Perhaps that is outside the scope of
>>>>>>>> opennebula's design goals, and may not be possible  - I'm just now
>>>>>>>> investigating it.
>>>>>>>>
>>>>>>>> I see you are using NFS, but my desire is to use block storage
>>>>>>>> instead, ideally LVM, and not incur the performance penalties of IPoIB. It
>>>>>>>> does sound simple though, and that's always good. Do you have any
>>>>>>>> performance data on that setup in terms of IOPs and/or MB/s write speeds?
>>>>>>>> It does sound interesting.
>>>>>>>>
>>>>>>>> Thanks again,
>>>>>>>> -C
>>>>>>>>
>>>>>>>>
>>>>>>>> On Sat, May 5, 2012 at 4:01 PM, Guba Sándor <gubasanyi at gmail.com>wrote:
>>>>>>>>
>>>>>>>>>  Hi
>>>>>>>>>
>>>>>>>>> I'm using InfiniBand to make shared storage. My setup is simple:
>>>>>>>>> the opennebula installdir is shared on NFS with the worker nodes.
>>>>>>>>>
>>>>>>>>> - I don't understand what you mean on shared image. There will be
>>>>>>>>> a copy (or symlink if the image is persistent) on the NFS host and that is
>>>>>>>>> that the hypervisor will use over the network. Live migrate is available
>>>>>>>>> beacuse you don't move the image only another host will use it from the
>>>>>>>>> same spot. With my linux images I have about 30s delay when livemigrate.
>>>>>>>>> You can use qcow2 driver for shared image.
>>>>>>>>>
>>>>>>>>> - I don't understant exactly what you mean on "guest unaware". If
>>>>>>>>> you mean storage - host connection it has nothing to do with nebula. You
>>>>>>>>> can use any shared filesystem. NFS uses IPoIB connection.
>>>>>>>>>
>>>>>>>>> 2012-05-05 19:01 keltezéssel, Chris Barry írta:
>>>>>>>>>
>>>>>>>>> Greetings,
>>>>>>>>>
>>>>>>>>> I'm interested in hearing user accounts about using infiniband as
>>>>>>>>> the storage interconnect with OpenNebula if anyone has any thoughts to
>>>>>>>>> share. Specifically about:
>>>>>>>>> * using a shared image and live migrating it (e.g. no copying of
>>>>>>>>> images).
>>>>>>>>> * is the guest unaware of the infiniband or is it running IB
>>>>>>>>> drivers?
>>>>>>>>> * does the host expose the volumes to the guest, or does the guest
>>>>>>>>> connect directly?
>>>>>>>>> * I'd like to avoid iSCSI over IPoIB if possible.
>>>>>>>>> * clustering filesystem/LVM requirements.
>>>>>>>>> * file-based vdisk or logical volume usage?
>>>>>>>>>
>>>>>>>>> Anything, an experiences at all will be helpful.
>>>>>>>>>
>>>>>>>>> Thanks
>>>>>>>>> Christopher
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Users mailing listUsers at lists.opennebula.orghttp://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Users mailing list
>>>>>>>>> Users at lists.opennebula.org
>>>>>>>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Users mailing list
>>>>>>> Users at lists.opennebula.org
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>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at lists.opennebula.org
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>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Jaime Melis
>>>> Project Engineer
>>>> OpenNebula - The Open Source Toolkit for Cloud Computing
>>>> www.OpenNebula.org | jmelis at opennebula.org
>>>>
>>>
>>>
>>
>>
>> --
>> Jaime Melis
>> Project Engineer
>> OpenNebula - The Open Source Toolkit for Cloud Computing
>> www.OpenNebula.org | jmelis at opennebula.org
>>
>
>
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