On Mon, Apr 4, 2016 at 9:55 AM, Gregory Farnum <gfarnum@xxxxxxxxxx> wrote: > Deletes are just slow right now. You can look at the ops in flight on you > client or MDS admin socket to see how far along it is and watch them to see > how long stuff is taking -- I think it's a sync disk commit for each unlink > though so at 40M it's going to be a good looong while. :/ > -Greg Oh good, I misremembered — it's a synchronous request to the MDS, but it's not a synchronous disk commit. They get batched up normally in the metadata log. :) Still, a sync MDS request can take a little bit of time. Someday we will make the client able to respond to these more quickly locally and batch up MDS requests or something, but it'll be tricky. Faster file creates will probably come first. (If we're lucky they can use some of the same client-side machinery.) -Greg > > > On Monday, April 4, 2016, Kenneth Waegeman <kenneth.waegeman@xxxxxxxx> > wrote: >> >> Hi all, >> >> I want to remove a large directory containing +- 40M files /160TB of data >> in CephFS by running rm -rf on the directory via the ceph kernel client. >> After 7h , the rm command is still running. I checked the rados df output, >> and saw that only about 2TB and 2M files are gone. >> I know this output of rados df can be confusing because ceph should delete >> objects asyncroniously, but then I don't know why the rm command still >> hangs. >> Is there some way to speed this up? And is there a way to check how far >> the marked for deletion has progressed ? >> >> Thank you very much! >> >> Kenneth >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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