Volume Attachment Limits

Overview

If you need to attach more than the default limitation of volume attachments, then this is possible by using a custom image and changing the properties of the image to use a non-default scsi driver.

Please note that any servers created before the image properties are set need to be re-created in order to use the updated driver.

The following properties need to be set in order to achieve this.

hw_disk_bus=scsi
hw_scsi_model=virtio-scsi

Volume attachment limits

Openstack CLI examples

Creating a new image (note that additional options are also needed when creating images, please refer to the Openstack documentation for more information)

openstack image create --property hw_disk_bus=scsi --property hw_scsi_model=virtio-scsi ${IMAGE_ID}

Updating an existing private image

openstack image set --property hw_disk_bus=scsi --property hw_scsi_model=virtio-scsi ${IMAGE_ID}