Displaying 2 results from an estimated 2 matches for "c7client".
2018 May 01
1
Re: Create qcow2 v3 volumes via libvirt
...9;t use vol-create-as to create a v3 image,
> you need to use the XML input.
>
BTW: in virt-manager of CentOS 7.4 by default qcow2 disks (see below for
zzz3.qcow2) are created with compatibility 1.1 (probably indirectly because
of its lazy refcounts feature enabled, as Daniel wrote):
[root@c7client images]# qemu-img info zzz3.qcow2
image: zzz3.qcow2
file format: qcow2
virtual size: 1.0G (1073741824 bytes)
disk size: 516K
cluster_size: 65536
Format specific information:
compat: 1.1
lazy refcounts: true
[root@c7client images]#
The same if I create a volume with a backing file from virt...
2018 Jan 30
4
Create qcow2 v3 volumes via libvirt
Hi all,
on a fully patched CentOS 7.4 x86-64, I see the following behavior:
- when creating a new volumes using vol-create-as, the resulting file is
a qcow2 version 2 (compat=0.10) file. Example:
[root@gdanti-lenovo vmimages]# virsh vol-create-as default zzz.qcow2
8589934592 --format=qcow2 --backing-vol /mnt/vmimages/centos6.img
Vol zzz.qcow2 created
[root@gdanti-lenovo vmimages]# file