On Sat, Dec 27, 2014 at 6:46 PM, Florent MONTHEL <fmonthel@xxxxxxxxxxxxx> wrote:
> Hi,
>
> I’ve just created image with striping support like below (image type 2 - 16
> stripes of 64K with 4MB object) :
>
> rbd create sandevices/flaprdweb01_lun010 --size 102400 --stripe-unit 65536
> --stripe-count 16 --order 22 --image-format 2
>
> rbd info sandevices/flaprdweb01_lun010
> rbd image 'flaprdweb01_lun010':
> size 102400 MB in 25600 objects
> order 22 (4096 kB objects)
> block_name_prefix: rbd_data.40c52ae8944a
> format: 2
> features: layering, striping
> stripe unit: 65536 bytes
> stripe count: 16
>
> But when I try to map device, I’ve unsupported striping alert on my dmesg
> console.
>
> rbd map sandevices/flaprdweb01_lun010 --name client.admin
> rbd: sysfs write failed
> rbd: map failed: (22) Invalid argument
>
> dmesg | tail
> [15352.510385] rbd: image flaprdweb01_lun010: unsupported stripe unit (got
> 65536 want 4194304)
>
> Do you know if it’s scheduled to support STRIPINGV2 on tbd client ?
> How can I mount my device ?
You can't - krbd doesn't support it yet. It's planned, in fact it's
the top item on the krbd list. Currently STRIPINGV2 images can be
mapped only if su=4M and sc=1 (i.e. if striping params match v1 images)
and that's the error you are tripping over.
Thanks,
Ilya
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