⁠2.3. Configuring Storage

Block Storage
Block Storage uses volume groups to identify attached volumes. By default, PackStack creates:
  • An example storage volume for testing. It is placed in /var/lib/cinder and installed as a loopback storage device on the host for the Block Storage service.
  • The cinder-volumes volume group (configured in volume_group in /etc/cinder/cinder.conf).
To avoid the creation of loopback devices, you must initialize your volume manually for the Block Storage service before installing and deploying OpenStack using PackStack.
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Example 2.1. Create Volume Group

Initialize the volume manager as a physical volume, and then use it to create the cinder-volumes volume group: 
# pvcreate /dev/sdX
# vgcreate cinder-volumes /dev/sdX
Object Storage
Instead of installing a volume for Object Storage, PackStack adds a device to an Object Storage ringfile. On the Object Storage host, the device is represented by a directory in /srv/. Ideally, the directory for the Object Storage device should be a separate file system.
If you do not have a separate file system, or just want to test Object Storage, then PackStack creates a small loopback storage device in place of a separate partition. Otherwise, you must manually configure your system using PackStack's answer file (see Section 5.3.2, “Editing a PackStack Answer File”).
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Example 2.2. Configure Storage Devices using PackStack Answer File

Configure Object Storage with /dev/sdb1 and /dev/sdc1 (no testing loopback device): 
​CONFIG_SWIFT_STORAGE_HOSTS=192.0.43.10/sdb1,192.0.43.10/sdc1