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danti
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 zzz.qcow2
zzz.qcow2: QEMU QCOW Image (v2), has backing file (path
/mnt/vmimages/centos6.img), 8589934592 bytes
[root@...
2018 Apr 30
0
Re: Create qcow2 v3 volumes via libvirt
Il 30-01-2018 13:17 Gionatan Danti ha scritto:
> 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 zzz.qcow2
> zzz.qcow2: QEMU QCOW Image (v2), has backing file (path
> /mnt/vmimages/centos6.img),...
2018 May 01
1
Re: Create qcow2 v3 volumes via libvirt
...Gionatan Danti wrote:
> > 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
>
> Yes, for sake of backcompat we default to v2 unless something
> requires v3. You can't use vol-create-as to create a v...
2018 May 01
0
Re: Create qcow2 v3 volumes via libvirt
..., Jan 30, 2018 at 01:17:21PM +0100, Gionatan Danti wrote:
> 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 at gdanti-lenovo vmimages]# virsh vol-create-as default zzz.qcow2
> 8589934592 --format=qcow2 --backing-vol /mnt/vmimages/centos6.img
> Vol zzz.qcow2 created
Yes, for sake of backcompat we default to v2 unless something
requires v3. You can't use vol-create-as to create a v3 image,
you need to use...