Re: Cannot map rbd image with striping!

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Striping is not supported with kernel rbd yet..

 

Thanks & Regards

Somnath

 

From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of Hadi Montakhabi
Sent: Wednesday, July 08, 2015 12:56 PM
To: ceph-users@xxxxxxxxxxxxxx
Subject: [ceph-users] Cannot map rbd image with striping!

 

Hi Cephers,

 

Here is the problem I am facing.

I would like to use striping feature with rbd.

When I create an image with striping arguments defined, I cannot map it:

 

[cephuser@node01 ~]$ rbd create ceph-client0-rbd0 --image-format 2 --size 10240 --stripe-unit 65536 --stripe-count 4

[cephuser@node01 ~]$ sudo rbd map --image ceph-client0-rbd0                     

rbd: sysfs write failed

rbd: map failed: (22) Invalid argument

 

 

However, when I create an image without striping arguments, it gets mapped with no problem:

 

[cephuser@node01 ~]$ rbd create ceph-client0-rbd0 --size 10240

[cephuser@node01 ~]$ sudo rbd map --image ceph-client0-rbd0

/dev/rbd0

 

Any thoughts what could go wrong?

 

Thanks,

Hadi




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