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Red Hat Enterprise Linux 9 Essentials Book now available.

Purchase a copy of Red Hat Enterprise Linux 9 (RHEL 9) Essentials

Red Hat Enterprise Linux 9 Essentials Print and eBook (PDF) editions contain 34 chapters and 298 pages

Preview Book

Chapter 22. Device Mapper Multipathing and Virtual Storage

Red Hat Enterprise Linux 6 also supports DM-Multipath and virtual storage. Both features are documented in detail in other stand-alone books also provided by Red Hat.

22.1. Virtual Storage

Red Hat Enterprise Linux 6 supports the following file systems/online storage methods for virtual storage:
  • Fibre Channel
  • iSCSI
  • NFS
  • GFS2
Virtualization in Red Hat Enterprise Linux 6 uses libvirt to manage virtual instances. The libvirt utility uses the concept of storage pools to manage storage for virtualized guests. A storage pool is storage that can be divided up into smaller volumes or allocated directly to a guest. Volumes of a storage pool can be allocated to virtualized guests. There are two categories of storage pools available:
Local storage pools
Local storage covers storage devices, files or directories directedly attached to a host. Local storage includes local directories, directly attached disks, and LVM Volume Groups.
Networked (shared) storage pools
Networked storage covers storage devices shared over a network using standard protocols. Networked storage includes shared storage devices using Fibre Channel, iSCSI, NFS, GFS2, and SCSI RDMA protocols. Networked storage is a requirement for migrating guest virtualized guests between hosts.


For comprehensive information on the deployment and configuration of virtual storage instances in your environment, please refer to the Virtualization Storage section of the Virtualization guide provided by Red Hat.

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