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
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