Re: Object location

Dan Mick <dan.mick@xxxxxxxxxxx> · Sun, 31 Mar 2013 12:08:14 -0700

Please don't remove the list. 

No, you can't choose a particular OSD for a particular object access. Why do you believe this is important?

On Mar 31, 2013, at 5:34 AM, Waed Bataineh <promiselady90@xxxxxxxxx> wrote:

oh thank you Dan,
I think it's more clear right now for me. but still can i force it to save the file as object in specific osd? 

Best regards. 

On Sat, Mar 30, 2013 at 10:17 AM, Dan Mick <dan.mick@xxxxxxxxxxx> wrote:

Keep in mind also that the osd map command doesn't require the object to exist. So you can run some maps and see which objects will land where if and when they are created. 

On Mar 29, 2013, at 9:32 PM, Waed Bataineh <promiselady90@xxxxxxxxx> wrote:

Dan,
well exactly if i used the mapping command line i have confusion about some issues if i may :_ exactly what it meant by obj in  rados -p <pool> put <file> <obj> , is this obj consider like the first part of the file and pointing  to the other object?

_how i can get the file back ?
_Finally, if i have two OSDs n no replica when do the mapping it always store at osd.0, is there a way to mak it store on osd.1 or it will continue till osd.0 will reach nearfull ? 

Thank you.

On Sat, Mar 30, 2013 at 7:15 AM, Dan Mick <dan.mick@xxxxxxxxxxx> wrote:

so "rados -p <pool> put <file> <obj>" is one way to create an object. There are also C/C++/Python librados bindings for writing programs to do so.

On 03/28/2013 05:30 AM, Waed Bataineh wrote:

Object Store.

On Thu, Mar 28, 2013 at 11:51 AM, Sebastien Han

<sebastien.han@xxxxxxxxxxxx <mailto:sebastien.han@enovance.com>> wrote:

    Hi,

    It depends, what do you to use from Ceph? Object store? Block

    device? Distributed filesystem?

    ––––

    Sébastien Han

    Cloud Engineer

    "Always give 100%. Unless you're giving blood."

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    On Mar 28, 2013, at 9:31 AM, Waed Bataineh <promiselady90@xxxxxxxxx

    <mailto:promiselady90@gmail.com>> wrote:

    Thank you both.

    well , no more error message :)

    If i may, i still have some confusion about how to start operating

    on ceph!

    _how can i start storing files that on the client at the server?

    correct me if i'm wrong, at client side i'll save the files i need

    to store at the mount point, then the server should deal with this

    files and start ceph work!

    _in case that what is really going, how i can get to the path the

    files have been stored in? this is actually my major problem, dont

    know the path that lead me to the files or objects!

    Hope I'm making my self clear!

    Thank you again.

    On Thu, Mar 28, 2013 at 3:20 AM, John

    Wilkins <john.wilkins@xxxxxxxxxxx

    <mailto:john.wilkins@inktank.com>> wrote:

    Already done. Missed it at first. Thanks! :)

    On Wed, Mar 27, 2013 at 5:17 PM, Sebastien

    Han <sebastien.han@xxxxxxxxxxxx

    <mailto:sebastien.han@enovance.com>> wrote:

    Hi John,

    Could you also please update the generic usage at the beginning of

    the section?

    Thanks!

    ps: I tried to push a change, but something went wrong with Github...

    ––––

    Sébastien Han

    Cloud Engineer

    "Always give 100%. Unless you're giving blood."

    PHONE : +33 (0)1 49 70 99 72 – MOBILE : +33 (0)6 52 84 44 70

    EMAIL : sebastien.han@xxxxxxxxxxxx

    <mailto:sebastien.han@enovance.com> – SKYPE : han.sbastien

    ADDRESS : 10, rue de la Victoire – 75009 Paris

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    On Mar 28, 2013, at 12:52 AM, John Wilkins

    <john.wilkins@xxxxxxxxxxx <mailto:john.wilkins@inktank.com>> wrote:

    Sebastian,

    You're correct. The usage has changed, so I've updated the doc to

    reflect it. I ran through the procedure and it worked fine for

    me. Sorry Waed. I hope that's all that was wrong.

    On Wed, Mar 27, 2013 at 3:48 PM, Sebastien Han

    <sebastien.han@xxxxxxxxxxxx <mailto:sebastien.han@enovance.com>>

    wrote:

    Arf sorry, not 'odd' but 'osd' of course. (thanks autocompletion…)

    ––––

    Sébastien Han

    Cloud Engineer

    "Always give 100%. Unless you're giving blood."

    PHONE : +33 (0)1 49 70 99 72 – MOBILE : +33 (0)6 52 84 44 70

    EMAIL : sebastien.han@xxxxxxxxxxxx

    <mailto:sebastien.han@enovance.com> – SKYPE : han.sbastien

    ADDRESS : 10, rue de la Victoire – 75009 Paris

    WEB : www.enovance.com <http://www.enovance.com> – TWITTER :

    @enovance

    On Mar 27, 2013, at 11:36 PM, Sebastien Han

    <sebastien.han@xxxxxxxxxxxx <mailto:sebastien.han@enovance.com>>

    wrote:

    Ok,

    I just noticed that the documentation seems to be wrong, the

    correct command to find the location of an object is:

    $ ceph odd map <pool-name> <object-name>

    Then, the error that you raised is pretty strange because even

    the object doesn't exist, the command will calculate the

    eventual location.

    Could you please paste _all_ the steps you've made to get this

    error?

    Thanks.

    ––––

    Sébastien Han

    Cloud Engineer

    "Always give 100%. Unless you're giving blood."

    <image.png>

    PHONE : +33 (0)1 49 70 99 72 – MOBILE : +33 (0)6 52 84 44 70

    EMAIL : sebastien.han@xxxxxxxxxxxx

    <mailto:sebastien.han@enovance.com> – SKYPE : han.sbastien

    ADDRESS : 10, rue de la Victoire – 75009 Paris

    WEB : www.enovance.com <http://www.enovance.com> – TWITTER :

    @enovance

    On Mar 26, 2013, at 1:36 PM, Waed Bataineh

    <promiselady90@xxxxxxxxx <mailto:promiselady90@gmail.com>> wrote:

    Pool obj_name does not exist.

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    Intank

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