Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

Xen 3.0 Virtualization Interface Guide
Prev Home Next

8.2 Block I/O

All guest OS disk access goes through the virtual block device VBD interface. This interface allows domains access to portions of block storage devices visible to the the block backend device. The VBD interface is a split driver, similar to the network interface described above. A single shared memory ring is used between the frontend and backend drivers for each virtual device, across which IO requests and responses are sent.

Any block device accessible to the backend domain, including network-based block (iSCSI, *NBD, etc), loopback and LVM/MD devices, can be exported as a VBD. Each VBD is mapped to a device node in the guest, specified in the guest's startup configuration.

Xen 3.0 Virtualization Interface Guide
Prev Home Next

 
 
  Published under the terms of the GNU General Public License Design by Interspire