Displaying 20 results from an estimated 2000 matches similar to: "Hot cloning & P2V"
2014 May 19
1
Cloning of Running Domain
Hello,
I have a running transient domain with a storage volume that utilizes a
backing file (both QCOW2 format).
I'd like to capture the disk and memory state of the domain preferably to
external file(s) (which I understand is an 'external checkpoint'), so that
other independent domains can be instantiated and effectively "resumed"
from this point-in-time profile.
My
2014 Sep 16
3
unattended cloning
Morning,
I have a KVM guest running Win 2012 with MS SQL 2012.
In order to provide a quick method of restoring the service should the live server die, we've decided to clone it to a preserved state.
Ideally, this clone should also be kept up to date and cloning should be done on a regular basis.
Is there any reason not to do unattended cloning? As in, when I leave on a Friday afternoon,
2012 Oct 21
2
Questions and a blockpull issue
Coming off of xen environment; still testing with kvm, just a few
questions:
1. What is the roadmap for release of qemu-kvm 1.1 and libvirt 0.10.2 for
el6, cause I had to compile from upstream to get the latest stuff.
2. Should not virt-manager show the sparsed disk size instead of actual
reserved size of a vm?
3. Where is the virsh bash_completion conf.d file from upstream; since el6
rpm
2016 Jul 21
2
Blockpull behavior when interrupted
Hello,
I use snapshot-create-as followed by blockpull when creating external snapshots
of VMs. This works well, however I am curious about the behavior of blockpull
after an unexpected shutdown (or SIGKILL). If a blockpull is in progress and an
unexpected power loss occurs, will the VM continue to reference the backing file
for the parts of it that have not yet been copied? Or, will will the disk
2014 Aug 06
2
[help] Does "virsh blockpull" works on live virtual machine
Hi all,
I have a kvm virtual machine running (qemu version 2.0), and I had took several external snapshots of the disk( using "virsh snapshot-create-as"). Now, the existed disk files relationship look like: base <- snap1 <-snap2 <- current using disk file. Now I want to remove snap1 and snap2, and let current disk using the base image file as back file directly. Unfortunately,
2014 Apr 16
1
Snapshots
Hello,
I would like to ask what I am doing wrong and what is the best approach to
resolve this situation:
First of all I start virtual machine by virDomainCreateXML. In my
application I use libvncclient library that sends mouse events to this
running domain. I had some troubles with coordinates of mouse cursor but all
problem was solved when I added <input type='tablet'
2014 Jan 29
4
Looks like blockpull does not accept a subset of the entire chain of backing files
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,
2012 Sep 13
1
After a 'virsh blockpull', 'virsh snapshot-list --tree' o/p does not reflect reality
Hi (Eric?),
A couple of questions while using the 'virsh blockpull'
Summary:
1] Created snapshots this way: base<-snap1<-snap2<-snap3 (online, external snapshot
--disk-only)
2] I did a 'virsh blockpull' from snap2 into snap3
3] Next, did another 'virsh blockpull' from snap1 into snap3
- Here, 'qemu-img info /path/to/snap3' shows its backing file
2015 Jul 20
1
Hot Cloning - clone running Virtual Machines
Greetings,
I am running a test automation service which makes use of QEMU/KVM. As the
tests run for few minutes, the time spent booting the OS (Windows) is quite
a waste of resources so I decided to play a bit around the idea of hot
cloning running VMs.
Following an old discussion I found, I proceeded with saving the VM state
through virsh save, edit its XML file with virsh save-image-edit and
2008 Nov 14
2
Netbios : Network Browsing on multiple subnets
Hi all !
I have a PDC and a BDC in 2 differents subnets.
I would like to sync their browse list but it doesn't seem to work.
Actually here are a part my smb.conf files :
PDC
------------------------------
...
remote browse sync = 10.10.20.10
remote announce = 10.10.20.10
security = user
encrypt passwords = true
domain logons = Yes
os level = 70
preferred master = yes
domain master = yes
2015 May 19
2
Pivot without copy
Hi,
Is it possible to "pivot" to a new image without doing blockcopy or
blockpull? I know how to use snapshots and blockpull to create a new image
and pivot to using it live, but what I would like to do is to have a VM
switch from using imageA.qcow2 to image2.qcow2 while running. I don't see
why this wouldn't be possible since some of the existing libvirt tools can
do this when
2019 Jul 03
1
Blockpull while domain is shutoff
Hi Libvirt,
Is there a command that performs the same operation as blockpull while a
domain is shutoff? I have a backing chain
base <-- A <-- B
that I would like to shorten to
base <-- B
It seems like blockpull B, setting --base <path-to-base> does this, but
only when the domain is running.
Thanks!
Sincerely,
Roger Jin
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2010 Feb 03
1
[libvirt] [LXC] Tyring to locate livbvirt operations for LXC relocation
Hello,
I am searching for the libvirt operations for relocating LXC (system or
application) containers. LXC relocation mechanism is done by checkpoint /
restart. I went over libvirt API documentation and found the following
methods:
virDomainSave that receives a domain and path to state file. The method
saves domain's memory contents into a disk file.
virDomainRestore that receives a domain
2014 Feb 06
2
Re: Can I move the disk image of the guest while it is running?
----- Original Message -----
> From: "Eric Blake" <eblake@redhat.com>
> To: "Gergely Horváth" <gergely.horvath@inepex.com>, libvirt-users@redhat.com
> Sent: Wednesday, February 5, 2014 4:47:47 PM
> Subject: Re: [libvirt-users] Can I move the disk image of the guest while it is running?
>
> On 02/05/2014 02:54 PM, Gergely Horváth wrote:
> >
2014 Feb 05
4
Re: Can I move the disk image of the guest while it is running?
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
2012 Aug 17
1
Live Snapshot and Rebasing using blockpull
Hello,
I am looking for a solution for live backups of running KVM hosts. I recently read this article which highlights the following method: http://www.linux-kvm.com/content/first-look-virtual-machine-online-disk-snapshots-coming-fedora-18
1. virsh snapshot-create-as to create the snapshot
2. cp myvm.qcow2 myvm-backup.qcow2 to copy off the now read-only backing image file
3. virsh
2014 Feb 06
2
Re: Can I move the disk image of the guest while it is running?
----- Original Message -----
> From: "Eric Blake" <eblake@redhat.com>
> To: "Andrew Martin" <amartin@xes-inc.com>
> Cc: "Gergely Horváth" <gergely.horvath@inepex.com>, libvirt-users@redhat.com
> Sent: Thursday, February 6, 2014 9:31:29 AM
> Subject: Re: [libvirt-users] Can I move the disk image of the guest while it is running?
>
2013 Feb 27
1
Deleting and coalescing live snapshots
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
2014 Apr 10
2
Re: Help with understanding and solving snapshot problem
Hello
Thanks heaps for your suggestions. responses inline.
On 10 Apr 2014, at 10:34 pm, Eric Blake <eblake@rehost1hat.com> wrote:
>
> [ … ]
> [Can you convince your mailer to wrap long lines? It makes it easier
> for other readers]
I’ll try and keep the lines short. I don’t see any obvious setting to change the wrap.
>>
>> Using RHEL 6.4 and libvirt version
2015 May 19
3
Re: Pivot without copy
Hi Eric,
Thanks for the info. I see the value in this, but it isn't quite what I was
looking for. Basically what I want to do is to switch between snapshots
quickly. For instance, I am currently working on designing a HA SQL
implementation with failover. So right now I have 5 VM's running postgresql
as a replication group. I am trying a lot of different things and often
have to take a