[PVE-User] Using Sheepdog on the data directory

[Andrew Niemantsverdriet]

Hi,

I guess my main question is why the change away from the upstream?
That just increases the work load for the developers and I am not
seeing a clear benefit to it.

Can anybody explain this?

Thanks,
 _
/-\ ndrew

On Fri, Oct 12, 2012 at 1:23 PM, Fábio Rabelo <fabio at fabiorabelo.wiki.br> wrote:
> 2012/10/12 Andrew Niemantsverdriet <andrew at rocky.edu>
>>
>> Hi,
>>
>>
>> On Fri, Oct 12, 2012 at 12:52 PM, Fábio Rabelo <fabio at fabiorabelo.wiki.br>
>> wrote:
>>>
>>> 2012/10/12 Andrew Niemantsverdriet <andrew at rocky.edu>
>>>>
>>>> I am wanting to do some tests with sheepdog and proxmox.
>>>>
>>>> The wiki mentions mounting a dedicated disk for this purpose, however I
>>>> would like the entire data directory to reside on sheepdog. Is this possible
>>>> with the pve-sheepdog package? It seems to deviate some from what is being
>>>> shipped upstream to accommodate the mounting of dedicated disks. If it is
>>>> possible what steps do I need to take to make that happen.
>>>>
>>> Hellows to all
>>>
>>> I am doing my tests for some days ...
>>>
>>> The wiki omits some things, I've trying to register and edit it ...
>>>
>>> Anything you mount on /var/lib/sheepdog/discx   will be recognized and
>>> showed in web gui after the setup is finished .
>>>
>>> You can have multiple devices, one as disc0, another as disc1 and so on .
>>>
>>> It can be a single disk or a RAID 0/1/10/50  or whatever you want .
>>>
>>> And MUST have the extended attribute option in  /etc/fstab set .
>>>
>>> You have to create the file "startup" in every device you mount, and
>>> start the daemon after the creation of this file .
>>>
>>> After that, start the daemon, format the cluster, add the appropriate
>>> content to file /etc/pve/storage.cfg like the example in the wiki, and you
>>> will be ready to go !
>>>
>>> The performance are completely dependant on what you mount .
>>>
>>> I do not know much about stability, my tests has just began, but it works
>>> great !
>>>
>>>
>>> Fábio Rabelo
>>
>>
>> Right I understand in principle it works, my question is how do I make the
>> data directory (/varr/lib/vz) be used by sheepdog. The issue is that the
>> pve-sheepdog package deviates from how the upstream package works by
>> introducing the concept of disk{0-9}. So my question remains, how do I use
>> the data directory with sheepdog?
>>
>
> I'm not shure if I understand what you asking but ....
>
> If you do not mount anything in /var/lib/sheepdog, just create a folder
> called disc0  ( mkdir  /var/lib/sheepdog/disc0  ) in all your nodes, then
> create the startup file ( touch  /var/lib/sheepdog/disc0/startup ) in all
> your nodes, and then start sheepdog daemon, you will use your filesystem as
> storage for sheepdog !
>
> This was my very first test .
>
> But the performance are poor, to many i/o traffic in a single disk ...
>
> The only deviation on upstream sheepdog are the disc0 disc1 thing, vanila
> sheepdog stores directly in /var/lib/sheepdog  .
>
> If it is not what you are asking, then please ask again ....
>
>
> Fábio Rabelo



-- 
 _
/-\ ndrew Niemantsverdriet
Linux System Administrator
Academic Computing
(406) 238-7360
Rocky Mountain College
1511 Poly Dr.
Billings MT, 59102