Creating a Ceph Device

Procedure

1. Create a pool.

   ceph osd pool create vdbench 1024 1024

2. Create images.

   ceph osd pool application enable vdbench rbd
   for i in {1..8}; do rbd create image${i} --size 51200 --pool vdbench --image-format 2 --image-feature layering; done

3. Embed data.

   mkdir -p /home/io_prepare
   cd /home/io_prepare

4. Create the Fio file for data preparation.

   vi write_pre.fio

   Add the following content:

   [global]
   ioengine=rbd
   pool=vdbench
   direct=1
   numjobs=1
   thread
   bs=1024k
   size=100%
   rw=write
   iodepth=128
   group_reporting
   
   [job1]
   rbdname=image1
   [job2]
   rbdname=image2
   [job3]
   rbdname=image3
   [job4]
   rbdname=image4
   [job5]
   rbdname=image5
   [job6]
   rbdname=image6
   [job7]
   rbdname=image7
   [job8]
   rbdname=image8

5. Execute data preparation.

   fio write_pre.fio