Open Stack

Razique:

Out of curiosity, what kinds of problems did you see with CephFS? I've
heard it's not ready for production yet, but I haven't heard anybody talk
about specific experiences with it.

Lorin


On Sat, Apr 20, 2013 at 8:14 AM, Razique Mahroua
<razique.mahroua at gmail.com>wrote:

> Hi Paras,
> that's the kind of setup I've always seen myself. After unsuccessful tests
> with CephFS, I'll move to the following strategy:
> - GlusterFS as a shared storage for the instances (check the official doc,
> we wrote about its deployment for OpenStack)
> - Ceph cluster wit the direct RBD gateway from nova to RADOS
> - Ceph cluster as well the imaging service (Glance)
>
> Some others use MooseFS as well the the stared storage (we wrote a
> deployment guide as well)
> Best regards,
> Razique
>
>
> *Razique Mahroua** - **Nuage & Co*
> razique.mahroua at gmail.com
> Tel : +33 9 72 37 94 15
>
>
> Le 19 avr. 2013 à 17:05, Paras pradhan <pradhanparas at gmail.com> a écrit :
>
> Well I am not sure if we would like to do it since it is marked
> as deprecated. So this is what I am thinking. For shared storage, I will be
> using glusterfs and use cinder just for extra block disk on the instances.
> This what the Openstack operators doing typically ?
>
> Thanks
> Paras.
>
>
> On Fri, Apr 19, 2013 at 12:10 AM, Razique Mahroua <
> razique.mahroua at gmail.com> wrote:
>
>> More infos here:
>> http://osdir.com/ml/openstack-cloud-computing/2012-08/msg00293.html
>>
>> But I'm not sure about the last updates - you can still use it at the
>> moment
>> Razique
>>
>> *Razique Mahroua** - **Nuage & Co*
>> razique.mahroua at gmail.com
>> Tel : +33 9 72 37 94 15
>>
>> <NUAGECO-LOGO-Fblan_petit.jpg>
>>
>> Le 18 avr. 2013 à 17:13, Paras pradhan <pradhanparas at gmail.com> a écrit :
>>
>> Regarding block migration, this is what confuses me. This is from the
>> Openstack operations manual
>>
>> --
>> Theoretically live migration can be done with non-shared storage, using
>> a feature known as KVM live block migration. However, this is a
>> littleknown feature in OpenStack, with limited testing when compared to
>> live migration, and is slated for deprecation in KVM upstream.
>> --
>>
>> Paras.
>>
>>
>> On Thu, Apr 18, 2013 at 3:00 AM, Razique Mahroua <
>> razique.mahroua at gmail.com> wrote:
>>
>>> Sure :)
>>> Great feedbacks around. Many technologies do pretty much everything on
>>> the paper - but I guess in the end it's more about if the tech. does the
>>> job and if it does it well.
>>> For such critical implementation, reliable solution is a must-have - ie
>>> that have proven through years they can be used and are stable enough for
>>> us to enjoy our week-ends :)
>>>
>>> Razique
>>>
>>> Le 18 avr. 2013 à 00:14, Paras pradhan <pradhanparas at gmail.com> a écrit
>>> :
>>>
>>> Thanks for the replies Razique. We are doing a test installation and
>>> looking for options for live migration. Looks like both cinder and shared
>>> file stirage are options. Among these two which one do you guys recommended
>>> considering the Cinder block will be typical lvm based commodity hardware.
>>>
>>> Thanks
>>> Paras.
>>>
>>>
>>> On Wed, Apr 17, 2013 at 5:03 PM, Razique Mahroua <
>>> razique.mahroua at gmail.com> wrote:
>>>
>>>> Definitely, use the "--block_migrate" flag along the nova migrate
>>>> command so you don't need a shared storage.
>>>>  You can boot from Cinder, depending on which version of OPS you run
>>>>
>>>> *Razique Mahroua** - **Nuage & Co*
>>>> razique.mahroua at gmail.com
>>>> Tel : +33 9 72 37 94 15
>>>>
>>>> <NUAGECO-LOGO-Fblan_petit.jpg>
>>>>
>>>> Le 17 avr. 2013 à 23:55, Paras pradhan <pradhanparas at gmail.com> a
>>>> écrit :
>>>>
>>>> Can we do live migration without using shared storage like glusterfs
>>>> and using cinder to boot the volume from?
>>>>
>>>> Sorry little off topic
>>>>
>>>> Thanks
>>>> Paras.
>>>>
>>>>
>>>> On Wed, Apr 17, 2013 at 4:53 PM, Razique Mahroua <
>>>> razique.mahroua at gmail.com> wrote:
>>>>
>>>>> Many use either a proprietary backend or the good old LVM
>>>>> I'll go with Ceph for it since there is a native integration between
>>>>> cinder/ nova-volume and Ceph
>>>>>
>>>>> *Razique Mahroua** - **Nuage & Co*
>>>>> razique.mahroua at gmail.com
>>>>> Tel : +33 9 72 37 94 15
>>>>>
>>>>> <NUAGECO-LOGO-Fblan_petit.jpg>
>>>>>
>>>>> Le 17 avr. 2013 à 23:49, Paras pradhan <pradhanparas at gmail.com> a
>>>>> écrit :
>>>>>
>>>>> What do people use for cinder?
>>>>>
>>>>> Thanks
>>>>> Paras.
>>>>>
>>>>>
>>>>> On Wed, Apr 17, 2013 at 4:41 PM, Razique Mahroua <
>>>>> razique.mahroua at gmail.com> wrote:
>>>>>
>>>>>> I was about to use CephFS (Bobtail) but the I can't resize the
>>>>>> instances without having CephFS crashing.
>>>>>> I'm currently considering GlusterFS which not only provides great
>>>>>> performance, it's also pretty much easy to administer  :)
>>>>>>
>>>>>> Le 17 avr. 2013 à 22:07, JuanFra Rodriguez Cardoso <
>>>>>> juanfra.rodriguez.cardoso at gmail.com> a écrit :
>>>>>>
>>>>>> Glance and Nova with MooseFS.
>>>>>> Reliable, good performance and easy configuration.
>>>>>>
>>>>>> ---
>>>>>> JuanFra
>>>>>>
>>>>>>
>>>>>> 2013/4/17 Jacob Godin <jacobgodin at gmail.com>
>>>>>>
>>>>>>> Hi all,
>>>>>>>
>>>>>>> Just a quick survey for all of you running distributed file systems
>>>>>>> for nova-compute instance storage. What are you running? Why are you using
>>>>>>> that particular file system?
>>>>>>>
>>>>>>> We are currently running CephFS and chose it because we are already
>>>>>>> using Ceph for volume and image storage. It works great, except for
>>>>>>> snapshotting, where we see slow performance and high CPU load.
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> OpenStack-operators mailing list
>>>>>>> OpenStack-operators at lists.openstack.org
>>>>>>>
>>>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>>>>>>>
>>>>>>>
>>>>>> _______________________________________________
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>>>>>>
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>>>>>>
>>>>>>
>>>>>>
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>>>>>>
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>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>
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>


-- 
Lorin Hochstein
Lead Architect - Cloud Services
Nimbis Services, Inc.
www.nimbisservices.com
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