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

Solution Verified - Updated -

Issue

  • 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.

Environment

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

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