Starting SPDK

Procedure

1. Go to the SPDK path and start the vhost process of SPDK.

   build/bin/vhost -S /var/tmp -m 0x2

   

   • The vhost process is used in virtualization scenarios in the SPDK framework.
   • In the preceding command, -S specifies the storage path of the resource device generated after device binding, and -m specifies the CPU core bound to the SPDK. The number of threads generated is the same as the number of CPU cores bound to the SPDK.
2. Open a new window, go to the SPDK code path, and create Ceph cloud disk devices. The following uses eight devices as an example.

   ./scripts/rpc.py bdev_rbd_create vdbench image1 512
   ./scripts/rpc.py bdev_rbd_create vdbench image2 512
   ./scripts/rpc.py bdev_rbd_create vdbench image3 512
   ./scripts/rpc.py bdev_rbd_create vdbench image4 512
   ./scripts/rpc.py bdev_rbd_create vdbench image5 512
   ./scripts/rpc.py bdev_rbd_create vdbench image6 512
   ./scripts/rpc.py bdev_rbd_create vdbench image7 512
   ./scripts/rpc.py bdev_rbd_create vdbench image8 512
   ./scripts/rpc.py vhost_create_blk_controller --cpumask 0x2 vhost.0 Ceph0
   ./scripts/rpc.py vhost_create_blk_controller --cpumask 0x2 vhost.1 Ceph1
   ./scripts/rpc.py vhost_create_blk_controller --cpumask 0x2 vhost.2 Ceph2
   ./scripts/rpc.py vhost_create_blk_controller --cpumask 0x2 vhost.3 Ceph3
   ./scripts/rpc.py vhost_create_blk_controller --cpumask 0x2 vhost.4 Ceph4
   ./scripts/rpc.py vhost_create_blk_controller --cpumask 0x2 vhost.5 Ceph5
   ./scripts/rpc.py vhost_create_blk_controller --cpumask 0x2 vhost.6 Ceph6
   ./scripts/rpc.py vhost_create_blk_controller --cpumask 0x2 vhost.7 Ceph7

   

   In the preceding command:

   • rpc.py is a control plane script of SPDK that is used to execute control commands.
   • --cpumask indicates the CPU core bound to the current device.
   • vhost.* indicates the name of the vsock fd generated by the current device, which is used by VMs.
   • Ceph* indicates the generated block device (bdev) of the RBD type.