similar to: snapshot of a raw file - how to revert ?

On Thu, Feb 15, 2018 at 11:41:37AM +0100, Lentes, Bernd wrote: [...] > Hi, > > i found that: https://dustymabe.com/2015/01/11/qemu-img-backing-files-a-poor-mans-snapshotrollback/ > > I tried it and it seemed to work, although my root fs was checked > after the commit, anything else seemed to work. What do you think of > this procedure ? Instead of 'qemu-img

----- On Feb 13, 2018, at 1:38 PM, Bernd Lentes bernd.lentes@helmholtz-muenchen.de wrote: > Hi, > > i have the following system: > > pc59093:~ # cat /etc/os-release > NAME="SLES" > VERSION="11.4" > VERSION_ID="11.4" > PRETTY_NAME="SUSE Linux Enterprise Server 11 SP4" > ID="sles" > ANSI_COLOR="0;32" >

----- On Feb 15, 2018, at 12:53 PM, Kashyap Chamarthy kchamart@redhat.com wrote: > On Thu, Feb 15, 2018 at 11:41:37AM +0100, Lentes, Bernd wrote: > > [...] > >> Hi, >> >> i found that: >> https://dustymabe.com/2015/01/11/qemu-img-backing-files-a-poor-mans-snapshotrollback/ >> >> I tried it and it seemed to work, although my root fs was checked

On Fri, Feb 16, 2018 at 01:59:01PM +0100, Lentes, Bernd wrote: [...] > Hi Kashyap, > > thanks for your quick and detailed answers. Just to be complete. > The procedure in the above mentioned link does work with my old software ? It _should_ work; but please try on a test VM and see what works and what doesn't in your environment. > pc59093:~ # rpm -qa|grep -iE

Michal wrote: > -----Original Message----- > From: Michal Privoznik [mailto:mprivozn@redhat.com] > Sent: Wednesday, July 10, 2013 12:45 PM > To: Lentes, Bernd > Cc: libvirt-ML (libvirt-users@redhat.com) > Subject: Re: [libvirt-users] guests not shutting down when > host shuts down > > On 10.07.2013 11:37, Lentes, Bernd wrote: > > Hi, > > > > i have a

Hi, i have a SLES 11 SP2 64bit host with three guests: - Windows XP 32 - Ubuntu 12.04 LTS 64bit - SLES 11 SP2 64bit The SLES guest shuts down with the host shutdown. The others not. When i shutdown these two guests with the virt-manager, they shutdown fine. ACPI is activated in virt-manager for both of them. Acpid is running in the Ubuntu Client. When the host shuts down, the two guests get a

Hi, i have a two node cluster with virtual guests as resources. I'd like to snapshot the guests once in the night and thought i had a procedure. But i realize that things in a cluster are a bit more complicated than expected :-)) I will shutdown the guests to have a clean snapshot. I can shutdown the guests via pacemaker. But then arises the first problem: When i issue a "virsh

Hi, what does "virsh destroy" with the domain ? Send a kill -9 to the process ? Bernd -- Bernd Lentes Systemadministration Institute for Metabolism and Cell Death (MCD) Building 25 - office 122 HelmholtzZentrum München bernd.lentes@helmholtz-muenchen.de phone: +49 89 3187 1241 phone: +49 89 3187 3827 fax: +49 89 3187 2294 http://www.helmholtz-muenchen.de/mcd stay healthy

Hi, i asked already a time ago about snapshots. I have some guests, each resides in a raw file, placed on an ext3 fs which is on top of a logical volume, for each guest a dedicated lv. The raw is not a "must have", if there are obvious reasons i can convert them to a qcow2. What i want is a consistent backup of each guest taken overnight. If possible i won't have downtime. I can use

Hi, i have a strange situation: A domain is still running where domblklist points to a snapshot file and also dumpxml says the current drive is that snapshot file. But the file has been deleted hours ago. And the domain is still running. I can login via ssh, the database and the webserver are still running, domain is performant. How can that be ? Also lsof shows that the file is deleted:

Hi, i try to run virt-manager on a SLES 11 SP1 box. I'm using kernel 2.6.32.12 and virt-manager 0.9.4-106.1.x86_64 . The system is a 64bit box. Here is the output: ========================= pc56846:/media/idg2/SysAdmin_AG_Wurst/software_und_treiber/virt_manager/sles_11_sp1 # virt-manager & [1] 9659 pc56846:/media/idg2/SysAdmin_AG_Wurst/software_und_treiber/virt_manager/sles_11_sp1 #

Hi, i have a two node HA-Cluster with several domains as resources. Currently it's running in test mode. Some domains (all on the same host) stopped running, virsh list shows them as "paused". All stopped at the same time (11th of may, 7:00 am), my monitoring system began to yell. I don't have any clue why this happened. virsh domblkerror says for all the domains (5) "no

Hi, Is it possible that "virsh destroy" does not stop a domain ? I'm asking because i have some domains running in a two-node HA-Cluster (pacemaker). And sometimes one node get fenced (killed) because it couldn't stop a domain. That's very ugly. This is also the reason why i asked before what "virsh destroy" really does ? IIRC a kill -9 can't terminate a

Hi, i wanted to benchmark a windows guest, compare standard driver and virtio driver. I installed the domain first with an IDE disk. I followed https://pve.proxmox.com/wiki/Paravirtualized_Block_Drivers_for_Windows to install the virtIO driver. In the device manager my VirtIO disk is recognized as a VirtIO SCSI disk from RedHat which seems ok for me. But the driver is, following the device

Hi, i have several vm's running on KVM hosts. Recently i found out that the time in the log-files of the guests (/var/log/libvirt/qemu/xxx.log) is wrong. The time on the guest itself is right, just the time in the log-files is one hour back. Windows and linux vm's are affected. Also on another host the same. Changing the clock offset does not have any influence, still the wrong time in

Hi, i'm playing a bit around with vcpus. My guest is Windows 10 1903. This is the excerpt from the config: ... <vcpu placement='static' current='2'>4</vcpu> <vcpus> <vcpu id='0' enabled='yes' hotpluggable='no'/> <vcpu id='1' enabled='yes' hotpluggable='yes'/> <vcpu id='2'

----- On Feb 7, 2020, at 3:43 PM, Peter Krempa pkrempa@redhat.com wrote: > On Fri, Feb 07, 2020 at 15:25:22 +0100, Lentes, Bernd wrote: ... > > Libvirt is probably lacking the metadata for the snapshot. That is not a > problem though, because since libvirt doesn't support deletion of > external snapshots anyways currently you'd need to use the below > approach anyways.

Hi, i have some virtual machines running on logical volumes formatted with OCFS2. I'd like to snapshot the running guests to backup them easily afterwards. The files of the guests are big (100 - 300GB), but the content changes only slowly. So i thought that rsync would be a great benefit because it justs transfers the difference between the current file and the one backuped one day before. I

Hi, i'm cuurently a bit confused if a guest does have a valid snapshot or not. This is the xml: ... <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/var/lib/libvirt/images/crispor_1604/crispor_1604.sn'/> <backingStore type='file' index='1'> <format

Hi, i'm currently installing a SLES 12 64bit system. libvirt-client-1.2.5-13.3.x86_64 and libvirt-daemon-1.2.5-13.3.x86_64. Formerly I created my vm's (KVM) using a traditional bridge in my host systems, mostly SLES 11 SP3. But with SLES 12 I don't succeed. I can use the macvtap device in the host, but I like to be able to communicate between host and guest. Is the traditional bridge