search for: qcow2v3

Hi All I am trying to deploy VMs using libvirt and a domainXML file where i mention the parameters for the VM to be deployed. I am using libvirt version: libvirt 0.10.2 ********** virsh # version Compiled against library: libvirt 0.10.2 Using library: libvirt 0.10.2 Using API: QEMU 0.10.2 Running hypervisor: QEMU 0.12.1 *********** I get this libvirt exception while deploying a VM. Exception

Il 26-06-2018 23:49 Cole Robinson ha scritto: > I see it as another test case and larger UI surface in the common path > for something that will save clicks for a corner case. I still don't > see > it asworth exposing in the UI. > > - Cole I can not force this decision, obviously. However, let me recap why I found it important to have the "allocate disk now"

...and a domainXML file where i > mention the parameters for the VM to be deployed. > > I am using libvirt version: libvirt 0.10.2 [I'm guessing that you are using something based on RHEL 6, based on how old that version number is...] This version of libvirt does not know how to handle qcow2v3 files. qemu started creating these by default around qemu 2.0 or so, but you can still manually create older qcow2v2 files by specifying: qemu-img create -o compat=0.10 -f qcow2 ... whenever you are manually creating images. > > Do i need to upgrade to any specific version of libvirt ? o...

...; it important to have the "allocate disk now" checkbox: > > - RAW files, even sparse one, are faster than Qcow2 files in the long run > (ie: when block allocation is >8 GB); There is always a performance distinction between raw and qcow2, but it is much less these days with qcow2v3 than it was with the original qcow2 design. > - Qcow2 snapshots have significant gotchas (ie: the guest is suspended > during the snapshot), while using RAW files will at least prevent using > virt-manager snapshot feature without thinking; This is really tangential. virt-manager chose...

...2, and the > output format requested is qcow2, virt-builder will just copy the > input to the output and not do any preallocation. > I expect the input images virt-builder uses (by default) to have preallocation=metadata. (Then again, I expected RHEL, CentOS and Fedora cloud images to be qcow2v3 - and they aren't - just plain 0.1 compat level). Y. > > To force a particular preallocation mode for the output image, an > extra step might be required, and that would have to be modelled in > the planner. > > The blog post above is quite interesting. Though Wordpress in...

Den 2023-04-05 kl. 09:47, skrev Peter Krempa: > The backup operation is quite complex so it is possible. > Please have a look into /var/log/libvirt/qemu/$VMNAME.log to see whether > qemu logged something like an assertion failure before crashing. > > Additionally you can have a look into 'coredumpctl' whether there are > any recorded crashes of

On Tue, May 17, 2016 at 05:53:31PM +0300, Yaniv Kaul wrote: > On Tue, May 17, 2016 at 5:48 PM, Richard W.M. Jones <rjones@redhat.com> > wrote: > > > On Tue, May 17, 2016 at 03:41:53PM +0100, Richard W.M. Jones wrote: > > > On Tue, May 17, 2016 at 05:15:57PM +0300, Yaniv Kaul wrote: > > > > When creating qcow2 images using virt-builder, is there a way to

Hi Eric and list, I had another production VM start pausing itself.  This one had been running for more than 4 years on a 60G LVM volume.  It has had the occasional snapshot during that time though all have been "removed" using the virt-manager gui so I used qemu-img as you suggested. # qemu-img convert /dev/trk-kvm-02-vg/rt44 -O qcow2 /mnt/scratch/rt44.qcow2 dd'd the qcow2