From mboxrd@z Thu Jan 1 00:00:00 1970 From: Elita Lobo Subject: Re: Query regarding storage of objects in ceph Date: Wed, 7 Sep 2016 11:14:26 +0530 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: Received: from mail-yb0-f176.google.com ([209.85.213.176]:35536 "EHLO mail-yb0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750820AbcIGFo2 (ORCPT ); Wed, 7 Sep 2016 01:44:28 -0400 Received: by mail-yb0-f176.google.com with SMTP id g5so2350854yba.2 for ; Tue, 06 Sep 2016 22:44:27 -0700 (PDT) In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Brad Hubbard Cc: ceph-devel Hi, Thanks , It was helpful. Could you please tell me how to trace local function calls made by ceph? I tried using gdb but it gave the following error. https://paste.fedoraproject.org/423219/73227055/ On Tue, Sep 6, 2016 at 10:35 AM, Brad Hubbard wrote: > On Tue, Sep 6, 2016 at 2:31 PM, Elita Lobo wrote: >> Hello, >> >> I am using Ceph in my research project and hence need to know a bit >> about how it works internally. I would be grateful if someone would >> answer my queries. >> >> When chunks of 2 objects have to be stored on an osd, are they put >> into the same file or are these chunks stored in separate file. Is >> there any way I could see this data using some command? And in which >> folder of the osd are they stored in? > > Working your way through this may help. > > http://cephnotes.ksperis.com/blog/2013/08/20/ceph-osd-where-is-my-data > >> >> Also, is there a way I can see the whole flow of function calls made >> when a node repair is going on? >> >> Lastly, could someone please suggest some resources ( other than docs) >> which would help me understand the internal implementation and give me >> an idea how to debug in ceph. (Attaching gdb to ceph daemons running >> in the background etc) >> >> Thanking you, >> Yours sincerely, >> Elita Lobo >> -- >> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > Cheers, > Brad