Ceph User Committee monthly meeting #1 : executive summary

Ceph User Committee monthly meeting #1 : executive summary

[Loic Dachary]

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Hi Ceph,

This month Ceph User Committee meeting was about:

    Tiering, erasure code
    Using http://tracker.ceph.com/
    CephFS
    Miscellaneous

You will find an executive summary at:

   https://wiki.ceph.com/Community/Meetings/Ceph_User_Committee_meeting_2014-04-03

The full log of the IRC conversation is also included to provide more context when needed. Feel free to edit if you see a mistake.

Cheers

-- 
Loïc Dachary, Artisan Logiciel Libre


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Re: Ceph User Committee monthly meeting #1 : executive summary

[Scottix]

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CephFS use case
Wanted to throw in our use case.

We store massive amount of timeseries data files that we need to process as
they come in. Right now raid is holding us over but we are hitting the
upper limits, we would have to spend some serious amount of money to go to
the next level, even then will start needing more throughput. That is where
Ceph would be great, although RBD is feasible, we need it to be reliably
expandable.
This is where Gluster has one up on Ceph. I have put off gluster because I
don't want to deal with split-brain scenarios, anyway we have been
experimenting with CephFS and we believe that is the way to go but we are
very cautious at the moment.



On Fri, Apr 4, 2014 at 9:34 AM, Loic Dachary <loic-cLsNCMjd+0JAfugRpC6u6w@public.gmane.org> wrote:

> Hi Ceph,
>
> This month Ceph User Committee meeting was about:
>
>     Tiering, erasure code
>     Using http://tracker.ceph.com/
>     CephFS
>     Miscellaneous
>
> You will find an executive summary at:
>
>
> https://wiki.ceph.com/Community/Meetings/Ceph_User_Committee_meeting_2014-04-03
>
> The full log of the IRC conversation is also included to provide more
> context when needed. Feel free to edit if you see a mistake.
>
> Cheers
>
> --
> Loïc Dachary, Artisan Logiciel Libre
>
>
> _______________________________________________
> ceph-users mailing list
> ceph-users-idqoXFIVOFJgJs9I8MT0rw@public.gmane.org
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
>


-- 
Follow Me: @Scottix <http://www.twitter.com/scottix>
http://about.me/scottix
Scottix-o4GsF6Y0fuwAvxtiuMwx3w@public.gmane.org

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Re: Ceph User Committee monthly meeting #1 : executive summary

[Milosz Tanski]

Loic,

The writeup has been helpful.

What I'm curious about (and hasn't been mentioned) is can we use
erasure with CephFS? What steps have to be taken in order to setup
erasure coding for CephFS?

In our case we'd like to take advantage of the savings since a large
chunk of our data is written once, read many times, after a while
seldom accessed. It looks like by default MDS alredy sets default
pools for data and metadata. So I'm guessing this requires some
preparation in advance.

Best,
- Milosz

On Fri, Apr 4, 2014 at 12:34 PM, Loic Dachary <loic-cLsNCMjd+0JAfugRpC6u6w@public.gmane.org> wrote:
> Hi Ceph,
>
> This month Ceph User Committee meeting was about:
>
>     Tiering, erasure code
>     Using http://tracker.ceph.com/
>     CephFS
>     Miscellaneous
>
> You will find an executive summary at:
>
>    https://wiki.ceph.com/Community/Meetings/Ceph_User_Committee_meeting_2014-04-03
>
> The full log of the IRC conversation is also included to provide more context when needed. Feel free to edit if you see a mistake.
>
> Cheers
>
> --
> Loïc Dachary, Artisan Logiciel Libre
>



-- 
Milosz Tanski
CTO
10 East 53rd Street, 37th floor
New York, NY 10022

p: 646-253-9055
e: milosz-B5zB6C1i6pkAvxtiuMwx3w@public.gmane.org

Re: Ceph User Committee monthly meeting #1 : executive summary

[Gregory Farnum]

On Fri, Apr 4, 2014 at 11:15 AM, Milosz Tanski <milosz-B5zB6C1i6pkAvxtiuMwx3w@public.gmane.org> wrote:
> Loic,
>
> The writeup has been helpful.
>
> What I'm curious about (and hasn't been mentioned) is can we use
> erasure with CephFS? What steps have to be taken in order to setup
> erasure coding for CephFS?

Lots. CephFS takes advantage of almost every RADOS capability, and EC
pools support only a subset of that. We haven't even whiteboarded what
would be required at this time. If using a cache pool is a feasible
option that would be a lot easier, but we haven't evaluated it yet.
-Greg
Software Engineer #42 @ http://inktank.com | http://ceph.com

>
> In our case we'd like to take advantage of the savings since a large
> chunk of our data is written once, read many times, after a while
> seldom accessed. It looks like by default MDS alredy sets default
> pools for data and metadata. So I'm guessing this requires some
> preparation in advance.
>
> Best,
> - Milosz
>
> On Fri, Apr 4, 2014 at 12:34 PM, Loic Dachary <loic-cLsNCMjd+0JAfugRpC6u6w@public.gmane.org> wrote:
>> Hi Ceph,
>>
>> This month Ceph User Committee meeting was about:
>>
>>     Tiering, erasure code
>>     Using http://tracker.ceph.com/
>>     CephFS
>>     Miscellaneous
>>
>> You will find an executive summary at:
>>
>>    https://wiki.ceph.com/Community/Meetings/Ceph_User_Committee_meeting_2014-04-03
>>
>> The full log of the IRC conversation is also included to provide more context when needed. Feel free to edit if you see a mistake.
>>
>> Cheers
>>
>> --
>> Loïc Dachary, Artisan Logiciel Libre
>>
>
>
>
> --
> Milosz Tanski
> CTO
> 10 East 53rd Street, 37th floor
> New York, NY 10022
>
> p: 646-253-9055
> e: milosz-B5zB6C1i6pkAvxtiuMwx3w@public.gmane.org
> _______________________________________________
> ceph-users mailing list
> ceph-users-idqoXFIVOFJgJs9I8MT0rw@public.gmane.org
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com