similar to: libvirt external disk-only snapshot will pause the VM?

Thanks very much Eric! This is exactly what I guessed, I just wondering where I could find this piece of code and control the the pause time of guest, while the snapshot being taken? thanks ! Best, Yuanzhen On Tue, Aug 5, 2014 at 6:30 PM, Eric Blake <eblake@redhat.com> wrote: > On 08/05/2014 03:54 PM, Yuanzhen Gu wrote: > > Hello folks, > > > > If I give command to

yes, I got your point, thanks very much Eric. If I want to take a distributed snapshot, which need pause all the VMs and then take snapshot, how can I control the pause for all the VMs? Is there only way that I turn to freeze/thaw functions? and freeze/thaw only for file systems, not for the whole guest, am I right? Thanks a lot! Best, Yuanzhen On Wed, Aug 6, 2014 at 11:35 AM, Eric Blake

On Wed, Aug 6, 2014 at 12:27 PM, Eric Blake <eblake@redhat.com> wrote: > On 08/06/2014 10:06 AM, Yuanzhen Gu wrote: > > yes, I got your point, thanks very much Eric. > > not entirely, because you still top-posted. > > got it entirely this time, not top-posted. > > > > If I want to take a distributed snapshot, which need pause all the VMs > and >

On 08/05/2014 03:54 PM, Yuanzhen Gu wrote: > Hello folks, > > If I give command to take external disk-only live snapshot, such as > # virsh snapshot-create-as vm1 snapshot_vm1 --disk-only > > will the guest OS be paused or suspend while the snapshot being taken? The guest will temporarily pause, but the time that it remains paused will be a fraction of a second. In practice,

On 08/06/2014 10:06 AM, Yuanzhen Gu wrote: > yes, I got your point, thanks very much Eric. not entirely, because you still top-posted. > > If I want to take a distributed snapshot, which need pause all the VMs and > then take snapshot, how can I control the pause for all the VMs? You mean, you have multiple VMs, and want to take a snapshot of all their storage at the same point in

On 08/06/2014 11:17 AM, Yuanzhen Gu wrote: >> Guest freeze/thaw (virDomainFSFreeze) only works on a live guest. So >> what you will have to do is: >> >> virDomainFSFreeze(vm1, ...) >> virDomainFSFreeze(vm2, ...) >> virDomainSuspend(vm1) >> virDomainSuspend(vm2) >> virDomainSnapshotCreateXML(vm1, ...) >> virDomainSnapshotCreateXML(vm2, ...)

Hi folks, I need to trace how libvirt talk with qemu monitor, log everything when give command, but does anyone know what the format, and how to read the log file? for example: 2014-07-22 17:25:22.984+0000: 18571: debug : qemuMonitorIOProcess:356 : QEMU_MONITOR_IO_PROCESS: mon=0x7f733c000a40 buf={"timestamp": {"seconds": 1406049922, "microseconds": 983916},

Good afternoon guys, I created the VM from XML dump, # virsh create vm4.xml and # virsh list I can see the VM running, and I know the ip address for the VM, but how can I know the username and password to login the running VM, which is created from XML dump? is there any place to edit and add the username and password in guest domain XML ? thanks a lot!! Best, Yuanzhen

On 08/06/2014 08:36 AM, Yuanzhen Gu wrote: [please don't top-post on technical lists] > Thanks very much Eric! This is exactly what I guessed, I just wondering > where I could find this piece of code and control the the pause time of > guest, while the snapshot being taken? thanks ! Actually, for new enough qemu (one with the 'transaction' QMP command), or for a guest

On Wed, Aug 6, 2014 at 1:29 PM, Eric Blake <eblake@redhat.com> wrote: > On 08/06/2014 11:11 AM, Yuanzhen Gu wrote: > > >> Libvirt is only concerned with what virtual hardware you present to the > >> > >> guest, not with the OS running in that guest or what username/password > >> > >> combinations will let you log into that guest OS.

On Tue, Aug 5, 2014 at 6:33 PM, Eric Blake <eblake@redhat.com> wrote: > On 08/05/2014 03:02 PM, Yuanzhen Gu wrote: > > Good afternoon guys, > > > > I created the VM from XML dump, > > # virsh create vm4.xml > > > > and # virsh list I can see the VM running, > > and I know the ip address for the VM, > > > > but how can I know the

Hello, I want to do a snapshot which the VM has volumes. But I want to skip the volume check when I do the snapshot. (Which means I want to do a snapshot without detaching the volume) So I try to write a snapshot XML refer by http://libvirt.org/formatsnapshot.html as following: vda is my VM basic disk (qcow2) vdb is a volume (raw) ================ t1.xml =============== <domainsnapshot>

Hi Eric. Thank you so much for your quick and relieving answer. Le 2015-09-11 17:05, Eric Blake a écrit : > Yes, using active block-commit is the ideal way to perform a live backup. Great. > Yep, that about covers it. Note that the --quiesce step in snapshot > creation requires qemu-guest-agent running in the guest, and that you > trust interaction with your guest. Yes, I think

destroy() is being called on exception in both start() and create(). It needs to be called only in create(). Signed-off-by: Aravindh Puthiyaparambil <aravindh.puthiyaparambil@unisys.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Dear All I try to migration a kvm guest os to another host failed server: ubuntu 11.04 server virsh:migrate --live --tunnelled vm1 qemu+ssh://192.168.10.3/system error:Requested operation is not valid:cannot perform tunnelled migration without using peer2peer flag

On Fri, Jun 30, 2017 at 09:23:29 -0400, Doug Hughes wrote: > On Jun 30, 2017 6:22 AM, "Peter Krempa" <pkrempa@redhat.com> wrote: > > On Fri, Jun 30, 2017 at 12:05:47 +0200, Peter Krempa wrote: > > > On Thu, Jun 22, 2017 at 11:02:41 -0400, Doug Hughes wrote: [...] > file or directory > > $ virsh blockcommit --active --pivot fedora23 vda > > >

Hi everybody, I recently used xyplot, but I found that for control flow can't work in the xyplot. The program code and some of my data file are shown as follow. Would someone please tell me where my code is wrong and how can make the code right? Thanks. Best regards Yuanzhen Lin Code: library("lattice") plot.data$Fam<-as.numeric(plot.data$Fam) #### xyplot can work if one

On Fri, Jun 30, 2017 at 10:41:25 -0400, doug.hughes@keystonenap.com wrote: > sorry about top post, tablet mail client... > > brilliant! that did it! Any idea what happened to cause it to partially fail and get into this state? virsh blockcommit --pivot is actually 3 operations in sequence: 1) initiate the commit job 2) wait till it finishes 3) initiate the pivot job (this is

Hi. I'm following here a conversation that was initiated on Kashyap's website [1]. We have a server we use as a host for virtual machines using KVM (virt-manager used for VM creation) and we would like to setup VM backups. Basically, we're thinking of a backup schedule like "keep 7 daily and 4 weekly backups". We'd rather not shutdown the VM every day so live backups

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