|Subject:||[Qemu-discuss] qemu-img and qcow2 disk size problem|
|Date:||Thu, 14 Mar 2013 10:00:49 -0400|
First question to the list, so let me know if there is a more appropriate forum for these questions:
Platform: Fedora-virt-preview from a couple of weeks back with qemu 1.3.0-9:
address@hidden are]# rpm --query --file /usr/bin/qemu-img
With qemu-img, have created a qcow2 file of size 9.7GB.
file format: qcow2
virtual size: 9.7G (10450108416 bytes)
disk size: 136K
I attach this qcow2 disk successfully:
address@hidden ~]# virsh attach-disk are1 /var/lib/libvirt/images/hsdr01d.d0.img vdb
Disk attached successfully
I go inside the guest and look at the disk:
address@hidden are]# fdisk -l /dev/vdb
Disk /dev/vdb: 1559 MB, 1559322624 bytes, 3045552 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
I know this qcow2 disk is /dev/vdb because before the attach /dev/vdb was not there.
The issue: The disk that the guest sees is only 1.5 GB, which is where my writes stop with a write failure.
How do I attach this qcow2 disk in such a way that the guest can see the full virtual size?
Is there anything in the create or attach command that I am missing?
I was going to use nbd on the host, but there is a missing symbol in the version in the repo ….
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