Resized block devices size is not getting reflected on the guest OS.

Solution Verified - Updated -


  • If a virtio disk is open in guest and a disk resize operation is done, (virsh blockresize), new size is not visible to tools like
    "fdisk -l" unless umount/mount or guest reboot is performed.


  • Red Hat Enterprise Linux 6.3 Guest.
  • RHEL Guest with kernel 2.6.32-358.2.0.el6 and lower version.

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content