similar to: Snapshots: Where they are stored and how to use them?

Hello, I am working on my PhD thesis and it would be really helpfull if someone could advise me, whether can Virsh create snapshots of VMs using copy-on-write. Thanks for reply. Juraj

Am 10.06.13 10:40, schrieb Kashyap Chamarthy: > On 06/10/2013 01:20 PM, Thomas Stein wrote: >> Am 10.06.13 09:07, schrieb Kashyap Chamarthy: >>> On 06/09/2013 02:46 PM, Thomas Stein wrote: >>>> Hello. >>>> >>>> I just tried the following: >>>> >>>> virsh dumpxml --security-info gentoo-template > gentoo-template.xml

Hello If I'm not terribly mistaken, looks like libvirt 1.2.1 does not provide ability of merging only a subset of the entire chain of backing files. So, if I have a chain like this: root <- a <-b <- c <- d <- active ... and I'd like to obtain a chain like this: root <- c <- d <- active ... looks like it's not supported,

Hi , Working on the simple POC : Advanced snapshot using libvirt and qemu . Following are the exact steps which are followed . 1. Created as base VM - Ubuntu 15.10 with following libvirt and qemu versions Using library: libvirt 1.2.16 Using API: QEMU 1.2.16 Running hypervisor: QEMU 2.3.0 QEMU emulator version 2.3.0 (Debian 1:2.3+dfsg-5ubuntu9.1), Copyright (c) 2003-2008 Fabrice

Hello. I just tried the following: virsh dumpxml --security-info gentoo-template > gentoo-template.xml virsh snapshot-create gentoo-template virsh undefine gentoo-template virsh blockcopy gentoo-template vda /opt/virt-backup-blockcopy/gentoo-template/gentoo-template.qcow2 --wait --verbose --finish virsh define gentoo-template.xml virsh snapshot-delete gentoo-template --current But if i

All, I have a service that takes new live KVM snapshots Si regularly, keeps a fixed number N (Si ,..,Si-N+1), and therefore needs to delete Si-N in this cycle. Until libvirt includes support for this capability that is said to be available in qemu, what is a safe workflow to delete old live KVM snapshots w/o losing data. Do I need to pause/shut down the VM? The development environment is

Am 10.06.13 09:07, schrieb Kashyap Chamarthy: > On 06/09/2013 02:46 PM, Thomas Stein wrote: >> Hello. >> >> I just tried the following: >> >> virsh dumpxml --security-info gentoo-template > gentoo-template.xml >> virsh snapshot-create gentoo-template >> virsh undefine gentoo-template > > Wait - is that really the command you used after

Hello, I recently compiled libvirt 1.0.1 and qemu 1.3.0 on Ubuntu 12.04. I have performed live snapshots on VMs using "virsh snapshot-create-as" and then later re-merge the images together using "virsh blockpull". I am wondering how I can do a couple of other operations on the images while the VM is running. For example, VM1 is running from the snap3 image, with the following

On Mon, Mar 21, 2016 at 01:18:55PM +0000, Richard W.M. Jones wrote: > On Mon, Mar 21, 2016 at 01:16:28PM +0000, Richard W.M. Jones wrote: > > On Mon, Mar 21, 2016 at 02:14:19PM +0100, Kashyap Chamarthy wrote: > > > I gave this series a spin, along a custom QEMU, and `supermin` from Git, > > > for my `libguestfs-test-tool` itself fails with: > > > > > >

Am 13.10.14 16:25, schrieb Eric Blake: > On 10/13/2014 03:56 AM, Thomas Stein wrote: >> Hello. >> >>> blockcommit vm1 vda --active --verbose --pivot >> >> That's where libvirt stops working at the moment, right? >> >> virsh # blockcommit puppet-test vda --active --verbose --pivot >> error: unsupported flags (0x4) in function

Versions -------- (Libvirt locally built from a recent git commit -ec7b922): $ rpm -q libvirt-daemon-kvm qemu-system-x86 libvirt-daemon-kvm-1.2.6-1.fc20.x86_64 qemu-system-x86-2.0.0-1.fc21.x86_64 Test ---- [All images are qcow2 files.] We have this simple chain: base <- snap1 Let's quickly examine the contents of 'base' and 'snap1' images:

On Wed, Mar 25, 2015 at 07:38:03PM +0100, Kashyap Chamarthy wrote: > On Mon, Mar 23, 2015 at 10:43:30PM +0000, Richard W.M. Jones wrote: > > [. . .] > > > > This makes a copy of the whole disk image. It's also not a consistent > > > (point in time) copy. > > > > Oh I see that you're copying the _snapshot_ that you created with > >

On Sat, Sep 03, 2016 at 02:39:11PM +0800, gunnar.wagner@netcologne.de wrote: > hi all & @Kayshap > > does [this handout on > snapshots](https://kashyapc.fedorapeople.org/virt/lc-2012/snapshots-handout.html) > by Kashyap Chamarthy (I believe from 2012) still apply to current > versions of libvirt-bin & qemu? Yes, as the URL indicates, it's from 2012. And, most of

Thank you Eric, On 2014-02-05 17:23, Eric Blake wrote: > Yes, live storage migration is possible; although at the moment, qemu is > lacking a way to restart the operation if it fails midstream, so libvirt > only allows the operation if you are willing to temporarily make your > guest transient. What does this mean? Will I loose anything if - for example - there is not enough space on

On Mon, Mar 23, 2015 at 10:41:01PM +0000, Richard W.M. Jones wrote: > On Mon, Mar 23, 2015 at 04:34:21PM +0200, NoxDaFox wrote: > > Greetings, > > > > I have the following typical scenario: given one or more qcow2 base images > > I clone them with COW and start the VMs. > > > > At a certain point I'd like to inspect them in order to see their evolution

Hello. The Changelog of qemu-2.0.0 mentioned "Live snapshot merging". Someone has an idea what could be ment by this? I'm asking because i'm still struggling with finding a reliable backup solution for running kvm machines. Blockcopy is my current solution. best regards Thomas

On Mon, Mar 21, 2016 at 02:14:19PM +0100, Kashyap Chamarthy wrote: > I gave this series a spin, along a custom QEMU, and `supermin` from Git, > for my `libguestfs-test-tool` itself fails with: > > "Could not open option rom 'linuxboot_dma.bin': No such file or > directory" The qemu build is broken in some way. To fix it you have to do: cp

Hello Fairly new to libvirt. I’m hoping to both solve a problem with this question as well as learn more detail about how libvirt works. Using RHEL 6.4 and libvirt version is 0.10.2 and qemu-img version is 0.12.1.2 Using virt-manager I created a VM. Nothing unusual as far as I can see. I then added a disk. So I have a second virtio based volume which the guest then mounts as a separate

On Wed, Aug 31, 2016 at 12:48:33PM +0200, Martin Kletzander wrote: > On Mon, Aug 29, 2016 at 09:42:17PM -0400, Brandon Golway wrote: > > (Copied from my post on the Arch Linux forums: [...] > > Can someone clue me in on what the issue is? > > > > Here's the entire XML config for the FreeNAS VM > > > > [code]<!-- > > WARNING: THIS IS AN