similar to: Reg : How to boot the external system checkpoint snapshots using KVM

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

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: > > > > > >

Hi, A couple of our important servers, both running FC4 but one i386 and one x86_64, have been crashing recently. They both are running ext3 data=journal with large external journals and high commit intervals. Both machines use the gdth driver for their hardware RAID sets, if that's of any use. I think the hardware is good in both cases. I hope someone finds this data useful enough to be

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 > libvirt; it's not a whole disk copy. There's still not any point in > doing this, and what I said below

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? - ubuntu: 14.04 - qemu: 2.0.0 - libvirt-bin 1.2.2-0ubuntu13.1.17 if not, is there an updated version available somewhere? Right now mainly interested in internal

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 > >

[Added Stefan Hajnoczi, who wrote the 'drive-backup' QMP command and Eric Blake.] On Wed, Mar 25, 2015 at 07:41:23PM +0000, Richard W.M. Jones wrote: > 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: [. . .] > > > > If you want lightweight, consistent, point-in-time snapshots

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

Firstly I'd like to learn where a snapshot is stored once it has been made. I understand that the principle is that when changes occur in the VM, the difference is written to the snapshot, thus recording the differences between the date/time of the snapshot and the current value of the VM. Is that a correct assessment of the process? If that is indeed so, can I take regular snapshots and

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 "snapshot-create" ? Because: You cannot undefine a guest with a snapshot without

On Thu, Mar 26, 2015 at 12:02:27AM +0100, Kashyap Chamarthy wrote: > [Added Stefan Hajnoczi, who wrote the 'drive-backup' QMP command and > Eric Blake.] > > On Wed, Mar 25, 2015 at 07:41:23PM +0000, Richard W.M. Jones wrote: > > 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

I had the same problem yesterday. I found the solution from this article https://kashyapc.fedorapeople.org/virt/lc-2012/snapshots-handout.html. According to the article it deletes the tracking metadata by libvirt. You can physically remove the snapshot now that there is no tracking stream data by libvirt On Wed, Aug 23, 2017 at 4:56 PM, Doug Hughes <doug.hughes@keystonenap.com> wrote:

My manual patching of the rejects in checkpoint.c didn''t work out; a delete of 10,000 files caused a panic (in any ext fs, not just Lustre). In the new checkpoint.c, two routines expected by the patch no longer exist: __cleanup_transaction and __flush_buffer. I can avoid the panic if I omit (don''t try to manually patch) the following: Index: linux-2.6.9/fs/jbd/checkpoint.c

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

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, I hope we have the right mailing list. We are two of a team of developers for DMTCP (transparent checkpoint-restart). It runs under Linux, and is free software (LGPLv3+), found at: http://dmtcp.sourceforge.net In our latest release, version 1.2.3, we have done some simple testing on R, and find that we can successfully checkpoint and restart. Its usage can be as simple as:

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 >>> virsh snapshot-create gentoo-template >>> virsh undefine

# HG changeset patch # User Shriram Rajagopalan <rshriram@cs.ubc.ca> # Date 1302544427 25200 # Node ID fefe3359ab726e634c00704eadeacfcf30b70c07 # Parent 697ac895c11c6d5d82524de56796cee98fded2a5 remus: fix incorrect error handling for switch_qemu_logdirty in checkpoint code c/s 22275: "tools: cleanup domain save switch_qemu_logdirty callback" introduced a whole bunch of error code

Hello, I'd like to extend Ices2 in order to make it capable of managing checkpoints. My assignment is to write a high-availability streaming server using OpenAIS. I decided to use Icecast and Ices. Ices should periodically save relevant information to a checkpoint, so that when it crashes and then restarts, it can continue to provide the stream from the point it left off, based on the

Hi guys, In my research, I want to change checkpoint interval during remus running. I think that the checkpoint_settimer function (declared in libcheckpoint.c) can do that I need. But I would like to call a checkpoint_settimer in xc_domain_save.c. Then I created a checkpoint_settimer*2* into xc_domain_save.c and this doesn''t work coz probably the timer_settime function there. Then I