Hi All,
I am facing a weird situation with Ceph Block device (rbd) -
The blkio.weight feature of cgroup seems to be not working on Ceph block device (say on /dev/rbd1 and /dev/rbd1), the iops number reported by the workload (fio or dd) should be in proportion to the applied weights (weights applied to VM or to a workload tasks).
Though blkio.weight feature of cgroup is working for normal device (ex- sda, sdb). I am setting IO schedulers to CFQ for both rbd and normal disks.
Any clue what i am missing.
Regards,
Vikrant
On Mon, Mar 10, 2014 at 12:08 AM, Vikrant Verma <vikrantverma99@xxxxxxxxx> wrote:
Hi All,blkio weight sharing is not working on Ceph Block device (RBD),IOPS number are not getting divided as per the weight proportion but are getting divided equally.i am using CFQ IO scheduler for RBD.
I did it getting it worked once but now i am not able to get it worked as i have upgraded ceph and ceph-deploy version of the cluster.Is there any dependency of blkio weight on ceph release.Please let me know if you have any idea about it. Early response will be highly appreciated.Regards,Vikrant
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