Open Stack

Razique, what did you end up deciding on? I would like to keep my Ceph
RADOS setup, but need a different filesystem to put on top of it. Wondering
if anyone else is doing that?




On Wed, Apr 24, 2013 at 1:21 PM, Razique Mahroua
<razique.mahroua at gmail.com>wrote:

> I feel you Jacob,
> Loring I had the exact same issue ! Using both Argonaut and Bobtail, on
> high I/O load the mount crashed the server - well the server wasn't
> crashing, the mount went crazy, and impossible to unmount the disk, kill
> the process, so I always ended up rebooting the nodes. What is interesting
> though is that the reason why it is not still considered as
> production-ready is because of the way metadata is currently implemented,
> rather than the code itself....
>
>
> *Razique Mahroua** - **Nuage & Co*
> razique.mahroua at gmail.com
> Tel : +33 9 72 37 94 15
>
>
> Le 24 avr. 2013 à 17:36, Lorin Hochstein <lorin at nimbisservices.com> a
> écrit :
>
> 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
>>
>> <NUAGECO-LOGO-Fblan_petit.jpg>
>>
>> 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.
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
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>>>>>>>> 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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>>
>
>
> --
> Lorin Hochstein
> Lead Architect - Cloud Services
> Nimbis Services, Inc.
> www.nimbisservices.com
>
>
>
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