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KVM Virtualization Cookbook by Konstantin Ivanov

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Working with storage pools

Libvirt provides a centralized way of managing instance volumes (being image files or directories) by defining storage pools. A storage pool is a collection of volumes that then can be assigned to virtual machines and used to host their filesystems or added as additional block devices. The main benefits of using storage pools is the ability for libvirt to present and manage the given storage type to VMs in a centralized way.

As of this writing, the following storage pool backends are available:

  • Directory backend
  • Local filesystem backend
  • Network filesystem backend
  • Logical backend
  • Disk backend
  • iSCSI backend
  • SCSI backend
  • Multipath backend
  • RADOS block device backend
  • Sheepdog backend
  • Gluster backend
  • ZFS backend
  • Virtuozzo ...

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