Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-04-02 Thread Matthew Gilliard
>> Thanks for the clarification, is there a bug tracking this in libvirt >> already? > Actually I don't think there is one, so feel free to file one I took the liberty of doing so: https://bugzilla.redhat.com/show_bug.cgi?id=1208588 On Wed, Mar 18, 2015 at 6:11 PM, Daniel P. Berrange wrote: >

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-03-18 Thread Daniel P. Berrange
On Wed, Mar 18, 2015 at 10:59:19AM -0700, Joe Gordon wrote: > On Wed, Mar 18, 2015 at 3:09 AM, Daniel P. Berrange > wrote: > > > On Wed, Mar 18, 2015 at 08:33:26AM +0100, Thomas Herve wrote: > > > > Interesting bug. I think I agree with you that there isn't a good > > solution > > > > currently

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-03-18 Thread Joe Gordon
On Wed, Mar 18, 2015 at 3:09 AM, Daniel P. Berrange wrote: > On Wed, Mar 18, 2015 at 08:33:26AM +0100, Thomas Herve wrote: > > > Interesting bug. I think I agree with you that there isn't a good > solution > > > currently for instances that have a mix of shared and not-shared > storage. > > > >

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-03-18 Thread Daniel P. Berrange
On Wed, Mar 18, 2015 at 08:33:26AM +0100, Thomas Herve wrote: > > Interesting bug. I think I agree with you that there isn't a good solution > > currently for instances that have a mix of shared and not-shared storage. > > > > I'm curious what Daniel meant by saying that marking the disk shareabl

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-03-18 Thread Daniel P. Berrange
On Tue, Mar 17, 2015 at 01:33:26PM -0700, Joe Gordon wrote: > On Thu, Jun 19, 2014 at 1:38 AM, Daniel P. Berrange > wrote: > > > On Wed, Jun 18, 2014 at 11:09:33PM -0700, Rafi Khardalian wrote: > > > I am concerned about how block migration functions when Cinder volumes > > are > > > attached to

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-03-18 Thread Thomas Herve
> Interesting bug. I think I agree with you that there isn't a good solution > currently for instances that have a mix of shared and not-shared storage. > > I'm curious what Daniel meant by saying that marking the disk shareable is > not > as reliable as we would want. I think this is the bug I

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-03-17 Thread Chris Friesen
On 03/17/2015 02:33 PM, Joe Gordon wrote: Digging up this old thread because I am working on getting multi node live migration testing working (https://review.openstack.org/#/c/165182/), and just ran into this issue (bug 1398999). And I am not sure I agree with this statement. I think there is

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-03-17 Thread Joe Gordon
On Thu, Jun 19, 2014 at 1:38 AM, Daniel P. Berrange wrote: > On Wed, Jun 18, 2014 at 11:09:33PM -0700, Rafi Khardalian wrote: > > I am concerned about how block migration functions when Cinder volumes > are > > attached to an instance being migrated. We noticed some unexpected > > behavior recen

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-02-16 Thread Daniel P. Berrange
On Mon, Feb 16, 2015 at 01:39:21PM +1300, Robert Collins wrote: > On 19 June 2014 at 20:38, Daniel P. Berrange wrote: > > On Wed, Jun 18, 2014 at 11:09:33PM -0700, Rafi Khardalian wrote: > >> I am concerned about how block migration functions when Cinder volumes are > >> attached to an instance be

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-02-15 Thread Tony Breeds
On Mon, Feb 16, 2015 at 01:39:21PM +1300, Robert Collins wrote: > Just ran across this from bug > https://bugs.launchpad.net/nova/+bug/1398999. Is there some way to > signal to libvirt that some block devices shouldn't be migrated by it > but instead are known to be networked etc? Or put another w

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2015-02-15 Thread Robert Collins
On 19 June 2014 at 20:38, Daniel P. Berrange wrote: > On Wed, Jun 18, 2014 at 11:09:33PM -0700, Rafi Khardalian wrote: >> I am concerned about how block migration functions when Cinder volumes are >> attached to an instance being migrated. We noticed some unexpected >> behavior recently, whereby

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2014-06-19 Thread Duncan Thomas
t; > , > Date: 19/06/2014 11:42 AM > Subject:Re: [openstack-dev] [nova][libvirt] Block migrations and > Cinder volumes > > > > > On Wed, Jun 18, 2014 at 11:09:33PM -0700, Rafi Khardalian wrote: >> I am concerned abo

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2014-06-19 Thread Ronen Kat
- the use case could be storage evacuation, or just moving the data to a different box. Ronen, From: "Daniel P. Berrange" To: "OpenStack Development Mailing List (not for usage questions)" , Date: 19/06/2014 11:42 AM Subject: Re: [openstack-dev] [nova][libvi

Re: [openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2014-06-19 Thread Daniel P. Berrange
On Wed, Jun 18, 2014 at 11:09:33PM -0700, Rafi Khardalian wrote: > I am concerned about how block migration functions when Cinder volumes are > attached to an instance being migrated. We noticed some unexpected > behavior recently, whereby attached generic NFS-based volumes would become > entirely

[openstack-dev] [nova][libvirt] Block migrations and Cinder volumes

2014-06-18 Thread Rafi Khardalian
I am concerned about how block migration functions when Cinder volumes are attached to an instance being migrated. We noticed some unexpected behavior recently, whereby attached generic NFS-based volumes would become entirely unsparse over the course of a migration. After spending some time revie