If the stripe size and object size are the same it's just chunking -- that's our default. Should work fine. -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com On Tue, Mar 11, 2014 at 8:23 AM, Jean-Charles LOPEZ <jc.lopez@xxxxxxxxxxx> wrote: > Hi Dieter, > > you have a problem with your command. > > You set order = 16 so your RBD objects is going to be 65536 bytes > > Then you tell RBD that you stripe-unit is going to be 65536 which is the size of your full object. > > Either decrease the size of --stripe-unit to 8192 for example > Or increase order so that it is bigger than your stripe unit and contains a multiple of stripe-units (e.g. 21) > > And it will work without any problem > JC > > > > On Mar 11, 2014, at 07:22, Kasper Dieter <dieter.kasper@xxxxxxxxxxxxxx> wrote: > >> So, should I open a bug report ? >> >> STRIPINGV2 feature was added in Ceph v0.53, and I'm running v0.61 and using '--image-format 2' during 'rbd create' >> >> Regards, >> -Dieter >> >> >> On Tue, Mar 11, 2014 at 03:13:28PM +0100, Srinivasa Rao Ragolu wrote: >>> of course. rbd userland utilities provide you create images on RADOS as >>> block storage. >>> >>> On Tue, Mar 11, 2014 at 7:37 PM, Kasper Dieter >>> <[1]dieter.kasper@xxxxxxxxxxxxxx> wrote: >>> >>> I know, that format2 in rbd.ko is supported with kernel version 3.10 and >>> above. >>> >>> But, if I want to create an rbd-image >>> only the Ceph Userland services should be involved, shouldn't it ? >>> >>> -Dieter >>> >>> BTW the kernel version on the nodes hosting the OSDs processes is >>> 2.6.32-358.el6.x86_64 >>> but I can also boot with a 3.10.32 kernel. >>> >>> On Tue, Mar 11, 2014 at 02:57:05PM +0100, Srinivasa Rao Ragolu wrote: >>>> Please check the kernel version . Only kernel version 3.10 and >>> above are >>>> supported to create format type 2 images. >>>> >>>> On Tue, Mar 11, 2014 at 7:16 PM, Kasper Dieter >>>> <[1][2]dieter.kasper@xxxxxxxxxxxxxx> wrote: >>>> >>>> When using "rbd create ... --image-format 2" in some cases this >>> CMD is >>>> rejected by >>>> EINVAL with the message "librbd: STRIPINGV2 and format 2 or later >>>> required for non-default striping" >>>> But, in v0.61.9 "STRIPINGV2 and format 2" should be supported >>>> >>>> [root@rx37-3 ~]# rbd create --pool SSD-r2 --size 20480 --order 16 >>>> --image-format 2 --stripe-unit 65536 --stripe-count 4 t2 >>>> rbd: create error: (22) Invalid argument >>>> 2014-03-11 14:39:03.885185 7f15bc170760 -1 librbd: STRIPINGV2 and >>> format >>>> 2 or later required for non-default striping >>>> >>>> [root@rx37-3 ~]# ceph -v >>>> ceph version 0.61.9 (7440dcd135750839fa0f00263f80722ff6f51e90) >>>> >>>> Any hints ? >>>> >>>> Regards, >>>> -Dieter >>>> _______________________________________________ >>>> ceph-users mailing list >>>> [2][3]ceph-users@xxxxxxxxxxxxxx >>>> [3][4]http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>>> >>>> References >>>> >>>> Visible links >>>> 1. mailto:[5]dieter.kasper@xxxxxxxxxxxxxx >>>> 2. mailto:[6]ceph-users@xxxxxxxxxxxxxx >>>> 3. [7]http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> >>> References >>> >>> Visible links >>> 1. mailto:dieter.kasper@xxxxxxxxxxxxxx >>> 2. mailto:dieter.kasper@xxxxxxxxxxxxxx >>> 3. mailto:ceph-users@xxxxxxxxxxxxxx >>> 4. http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> 5. mailto:dieter.kasper@xxxxxxxxxxxxxx >>> 6. mailto:ceph-users@xxxxxxxxxxxxxx >>> 7. 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 > > _______________________________________________ > 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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