Thanks a lot Sage.
On Tue, Feb 3, 2015 at 3:34 PM, Sage Weil <sage@xxxxxxxxxxxx> wrote:
The hash of the filename is ($inode.$block) is 4BC00833, and the pg id is
a slightly weird function of those bits.
sage
On Tue, 3 Feb 2015, Mudit Verma wrote:
> Great, I found the file which contains the data
> root@ceph-osd1:/var/local/osd1/current# grep "hello3" * -r
>
> 1.0_head/100000003fb.00000000__head_4BC00833__1:hello3
>
> And it does indeed match to the hex ino.
>
> How does it determined that the data will go to 1.0_head and what does
> head_4BC00833 stand for.
>
>
>
> Thanks again for your prompt response.
>
>
> Regards
> Mudit
>
>
> On Tue, Feb 3, 2015 at 3:26 PM, Sage Weil <sage@xxxxxxxxxxxx> wrote:
> On Tue, 3 Feb 2015, Mudit Verma 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
>
> 100000003fb
>
> The object names will be something like 100000003fb.00000001.
> The
> filenames once they hit disk will get the __head_$hash type
> suffix based
> on a hash of the name and some other random stuff. I think the
> __2 is
> the pool id.
>
> sage
>
>
>
>
> >
> > 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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