Thank you for the insights. Atish On Tue, Nov 22, 2011 at 10:39 PM, Gregory Farnum <gregory.farnum@xxxxxxxxxxxxx> wrote: > > > On Tuesday, November 22, 2011, Atish Kathpal <atish.kathpal@xxxxxxxxx> > wrote: >> Hello >> >> Does RADOS support metadata queries? > Nope. RADOS is not a database of any kind, sorry. The only metadata service > is that used by te Ceph filesystem, and it can't do what you're after. > I have gone through librados and >> the "rados" command line tool, and there doesn't seem to be a way for >> me to say, query the object store saying: "Give me all objects with >> Xattr Video = 1". The only way I can think of is to write some of my >> own code using librados. >> >> Any pointers if the system has a metadata service or something that I >> can query? > You could see of the object classes and map objects let you do what you > want. I think we'll need to make them a bit more powerful before they're > helpful for you, though. :/ > >> >> (I have seen few diagrams showing a metadata cluster as part of Ceph >> which supports metadata operations, how can I leverage that? reference >> diagram: >> http://www.usenix.org/event/osdi06/tech/full_papers/weil/weil_html/fig/overview.png) >> >> Regards >> Atish >> -- >> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
