Re: cephfs: from a file name determine the objects name

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Mudit,

Those are the journal objects you're seeing touched.  Write some data
to the file, and do a "rados -p <your data pool> ls" to check the
objects for the inode number you're expecting.

Cheers,
Johnn

On Tue, Feb 3, 2015 at 10:53 AM, Mudit Verma <mudit.f2004912@xxxxxxxxx> wrote:
> Hi Sage,
>
> Following are the greps through inotify,  I created a file name cris at
> client end
>
> From stats the ino number is 1099511628795
>
> but it does not match to the hex 06E5F474
>
>
> On ODS:
>
> /var/local/osd1/current/2.0_head/ OPEN 200.00000001__head_06E5F474__2
>
> /var/local/osd1/current/2.0_head/ MODIFY 200.00000001__head_06E5F474__2
>
> /var/local/osd1/current/2.0_head/ CLOSE_WRITE,CLOSE
> 200.00000001__head_06E5F474__2
>
>
> May you please help me understand this name 200.00000001__head_06E5F474__2
>
>
> Thanks
>
> Mudit
>
>
> On Sun, Feb 1, 2015 at 10:35 PM, Sage Weil <sage@xxxxxxxxxxxx> wrote:
>>
>> It's inode number (in hex), then ".", then block number (in hex).  You can
>> get the ino of a file with stat.
>>
>> sage
>>
>>
>>
>> On February 1, 2015 5:08:18 PM GMT+01:00, Mudit Verma
>> <mudit.f2004912@xxxxxxxxx> wrote:
>>>
>>> Hi All,
>>>
>>> CEPHFS - Given a file name, how can one determine the exact location and
>>> the name of the objects on OSDs.
>>>
>>> So far I could understand that the objects data is stored in .../current
>>> dir in OSDs, but what naming convention do they use?
>>>
>>> Many thanks in advance
>>>
>>> Thanks
>>> Mudit
>>>
>>> ________________________________
>>>
>>> ceph-users mailing list
>>> ceph-users@xxxxxxxxxxxxxx
>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>>
>>
>> --
>> Sent from Kaiten Mail. Please excuse my brevity.
>
>
>
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