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...time we only got half way through the VM’s when removing the snapshots so we have a good chance that it comes up again. Also the libvirt logs to the journal not to libvirtd.log, i would send the journal directly to you and Eric via our data exchange servers Soeren On 04/06/15 16:17, "Adam Litke" <alitke@redhat.com> wrote: >On 04/06/15 13:08 +0000, Soeren Malchow wrote: >>Hi Adam, Hi Eric, >> >>We had this issue again a few minutes ago. >> >>One machine went down exactly the same way as described, the machine had >>only one snapshot and i...

...of snapshots done") > api.disconnect() >except Exception as e: > print ("Something went wrong when deleting the snapshots\n%s") % >str(e) > > > ><― snip ―> > > >Cheers >Soeren > > > > > >On 03/06/15 15:20, "Adam Litke" <alitke@redhat.com> wrote: > >>On 03/06/15 07:36 +0000, Soeren Malchow wrote: >>>Dear Adam >>> >>>First we were using a python script that was working on 4 threads and >>>therefore removing 4 snapshots at the time throughout the cluster, tha...

...’s >when removing the snapshots so we have a good chance that it comes up >again. > >Also the libvirt logs to the journal not to libvirtd.log, i would send the >journal directly to you and Eric via our data exchange servers > > >Soeren > >On 04/06/15 16:17, "Adam Litke" <alitke@redhat.com> wrote: > >>On 04/06/15 13:08 +0000, Soeren Malchow wrote: >>>Hi Adam, Hi Eric, >>> >>>We had this issue again a few minutes ago. >>> >>>One machine went down exactly the same way as described, the machine had &gt...

...ee what happens. > >We are not using RHEL 7.1 only CentOS 7.1 > >Is there anything else we can look at when this happens again ? I'll defer to Eric Blake for the libvirt side of this. Eric, would enabling debug logging in libvirtd help to shine some light on the problem? -- Adam Litke

Adam Litke <alitke at redhat.com> writes: >> On Tue Feb 11 06:01:10 UTC 2014, Rusty Russell wrote: >> Hi all! >> >> We're debating the design of the balloon for the OASIS spec. >> Noone likes the current one, but there are fundamental usage pattern >> qu...

Adam Litke <alitke at redhat.com> writes: >> On Tue Feb 11 06:01:10 UTC 2014, Rusty Russell wrote: >> Hi all! >> >> We're debating the design of the balloon for the OASIS spec. >> Noone likes the current one, but there are fundamental usage pattern >> qu...

...xception as e: >> print ("Something went wrong when deleting the snapshots\n%s") % >>str(e) >> >> >> >><― snip ―> >> >> >>Cheers >>Soeren >> >> >> >> >> >>On 03/06/15 15:20, "Adam Litke" <alitke@redhat.com> wrote: >> >>>On 03/06/15 07:36 +0000, Soeren Malchow wrote: >>>>Dear Adam >>>> >>>>First we were using a python script that was working on 4 threads and >>>>therefore removing 4 snapshots at the time thr...

...since commit b8a7f3cd7e8212e5c572178ff3b5a514861036a5: Linus Torvalds (1): Merge branch 'master' of git://git.kernel.org/.../viro/vfs-2.6 are available in the git repository at: ssh://master.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus.git virtio-lguest Adam Litke (2): virtio: Add memory statistics reporting to the balloon driver (V4) virtio: Fix scheduling while atomic in virtio_balloon stats Michael S. Tsirkin (4): tun: export underlying socket mm: export use_mm/unuse_mm to modules vhost_net: a kernel-level virtio server...

...since commit b8a7f3cd7e8212e5c572178ff3b5a514861036a5: Linus Torvalds (1): Merge branch 'master' of git://git.kernel.org/.../viro/vfs-2.6 are available in the git repository at: ssh://master.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus.git virtio-lguest Adam Litke (2): virtio: Add memory statistics reporting to the balloon driver (V4) virtio: Fix scheduling while atomic in virtio_balloon stats Michael S. Tsirkin (4): tun: export underlying socket mm: export use_mm/unuse_mm to modules vhost_net: a kernel-level virtio server...

...ated to communicate with the host. A simpler approach is to collect memory statistics in the virtio balloon driver and communicate them directly to the hypervisor. This patch enables the guest-side support by adding stats collection and reporting to the virtio balloon driver. Signed-off-by: Adam Litke <agl at us.ibm.com> Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Anthony Liguori <anthony at codemonkey.ws> Cc: virtualization at lists.linux-foundation.org Cc: linux-kernel at vger.kernel.org diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c ind...

...ated to communicate with the host. A simpler approach is to collect memory statistics in the virtio balloon driver and communicate them directly to the hypervisor. This patch enables the guest-side support by adding stats collection and reporting to the virtio balloon driver. Signed-off-by: Adam Litke <agl at us.ibm.com> Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Anthony Liguori <anthony at codemonkey.ws> Cc: virtualization at lists.linux-foundation.org Cc: linux-kernel at vger.kernel.org diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c ind...

...ated to communicate with the host. A simpler approach is to collect memory statistics in the virtio balloon driver and communicate them directly to the hypervisor. This patch enables the guest-side support by adding stats collection and reporting to the virtio balloon driver. Signed-off-by: Adam Litke <agl at us.ibm.com> Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Anthony Liguori <anthony at codemonkey.ws> Cc: virtualization at lists.linux-foundation.org Cc: linux-kernel at vger.kernel.org diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c ind...

...ated to communicate with the host. A simpler approach is to collect memory statistics in the virtio balloon driver and communicate them directly to the hypervisor. This patch enables the guest-side support by adding stats collection and reporting to the virtio balloon driver. Signed-off-by: Adam Litke <agl at us.ibm.com> Cc: Rusty Russell <rusty at rustcorp.com.au> Cc: Anthony Liguori <anthony at codemonkey.ws> Cc: virtualization at lists.linux-foundation.org Cc: linux-kernel at vger.kernel.org diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c ind...

...vdsm/virt/vm.py, line 697). > >We are very willing to help, test and supply log files in anyway we can. > >Regards >Soeren > >_______________________________________________ >Users mailing list >Users@ovirt.org >http://lists.ovirt.org/mailman/listinfo/users -- Adam Litke

...Snapshot deletion for %s done") % vm.name print ("Deletion of snapshots done") api.disconnect() except Exception as e: print ("Something went wrong when deleting the snapshots\n%s") % str(e) <― snip ―> Cheers Soeren On 03/06/15 15:20, "Adam Litke" <alitke@redhat.com> wrote: >On 03/06/15 07:36 +0000, Soeren Malchow wrote: >>Dear Adam >> >>First we were using a python script that was working on 4 threads and >>therefore removing 4 snapshots at the time throughout the cluster, that >>still caused p...

On 20/02/14 14:53 +1030, Rusty Russell wrote: >Adam Litke <alitke at redhat.com> writes: >>> On Tue Feb 11 06:01:10 UTC 2014, Rusty Russell wrote: >>> Hi all! >>> >>> We're debating the design of the balloon for the OASIS spec. >>> Noone likes the current one, but there are fundamental usage...

...nk it is the number of VMS because we had this on hosts with only 3 or 4 Vms running I will try restarting the libvirt and see what happens. We are not using RHEL 7.1 only CentOS 7.1 Is there anything else we can look at when this happens again ? Regards Soeren On 02/06/15 18:53, "Adam Litke" <alitke@redhat.com> wrote: >Hello Soeren. > >I've started to look at this issue and I'd agree that at first glance >it looks like a libvirt issue. The 'cannot acquire state change lock' >messages suggest a locking bug or severe contention at least. To...

Hi all! We're debating the design of the balloon for the OASIS spec. Noone likes the current one, but there are fundamental usage pattern questions which we're fumbling with. So if you know anyone who is using it in production? If, so, how? In particular, would you be happy with guests simply giving the host back whatever memory they can spare (as Xen's self-balloon does)?

Hi all! We're debating the design of the balloon for the OASIS spec. Noone likes the current one, but there are fundamental usage pattern questions which we're fumbling with. So if you know anyone who is using it in production? If, so, how? In particular, would you be happy with guests simply giving the host back whatever memory they can spare (as Xen's self-balloon does)?

...t memory statistics in the virtio > balloon driver and communicate them to the host via the device config space. > > This patch enables the guest-side support by adding stats collection and > reporting to the virtio balloon driver. > > Signed-off-by: Adam Litke <agl at us.ibm.com> > > diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c > index 3a43ebf..1029363 100644 > --- a/drivers/virtio/virtio.c > +++ b/drivers/virtio/virtio.c > @@ -135,6 +135,7 @@ static int virtio_dev_probe(struct device *_d) > set_bit(i, de...