Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-22 Thread John Garbutt
;> Sent: February 11, 2016 18:31 >> To: openstack-dev@lists.openstack.org >> Subject: Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when >> to call os-brick's connector.disconnect_volume >> >> There seems to be a few discussions going on here

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-16 Thread Walter A. Boring IV
On 02/12/2016 04:35 PM, John Griffith wrote: On Thu, Feb 11, 2016 at 10:31 AM, Walter A. Boring IV > wrote: There seems to be a few discussions going on here wrt to detaches. One is what to do on the Nova side with calling

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-12 Thread Ildikó Váncsa
penstack-dev@lists.openstack.org > Subject: Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to > call os-brick's connector.disconnect_volume > > There seems to be a few discussions going on here wrt to detaches. One > is what to do on the Nova side with calling o

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-12 Thread John Griffith
On Thu, Feb 11, 2016 at 10:31 AM, Walter A. Boring IV wrote: > There seems to be a few discussions going on here wrt to detaches. One > is what to do on the Nova side with calling os-brick's disconnect_volume, > and also when to or not to call Cinder's

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-11 Thread Ildikó Váncsa
McGinnis [sean.mcgin...@gmx.com] > Sent: Wednesday, February 10, 2016 3:25 PM > To: OpenStack Development Mailing List (not for usage questions) > Subject: Re: [openstack-dev] [Nova][Cinder] Multi-attach, > determining when to call os-brick'

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-11 Thread Avishay Traeger
On Thu, Feb 11, 2016 at 12:23 PM, Daniel P. Berrange wrote: > As above, we need to solve this more generally than just multi-attach, > even single-attach is flawed today. > Agreed. This is what I was getting at. Because we have at least 3 different types of attach being

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-10 Thread John Griffith
.org > > Subject: Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining > when to call os-brick's connector.disconnect_volume > > > > On 02/09/2016 02:04 PM, Ildikó Váncsa wrote: > > > Hi Walt, > > > > > > Thanks for starting this thread. It is a g

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-10 Thread Sean McGinnis
On Wed, Feb 10, 2016 at 03:30:42PM -0700, John Griffith wrote: > On Tue, Feb 9, 2016 at 3:23 PM, Ildikó Váncsa > wrote: > > > > ​This may still be in fact the easiest way to handle this. The only other > thing I am still somewhat torn on here is that maybe Nova

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-10 Thread John Griffith
g drivers don't break. > > Thanks, > Kevin > > From: Sean McGinnis [sean.mcgin...@gmx.com] > Sent: Wednesday, February 10, 2016 3:25 PM > To: OpenStack Development Mailing List (not for usage questions) > Subject: Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining whe

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-10 Thread Avishay Traeger
not allowing >> multiattach ever, so existing drivers don't break. >> >> Thanks, >> Kevin >> >> From: Sean McGinnis [sean.mcgin...@gmx.com] >> Sent: Wednesday, February 10, 2016 3:25 PM >> To: OpenStack Development Mailing List (not for usage

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-10 Thread John Griffith
On Wed, Feb 10, 2016 at 3:59 PM, Sean McGinnis wrote: > On Wed, Feb 10, 2016 at 03:30:42PM -0700, John Griffith wrote: > > On Tue, Feb 9, 2016 at 3:23 PM, Ildikó Váncsa < > ildiko.van...@ericsson.com> > > wrote: > > > > > > > ​This may still be in fact the easiest way to

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-10 Thread Sean McGinnis
On Wed, Feb 10, 2016 at 11:16:28PM +, Fox, Kevin M wrote: > I think part of the issue is whether to count or not is cinder driver > specific and only cinder knows if it should be done or not. > > But if cinder told nova that particular multiattach endpoints must be > refcounted, that might

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-10 Thread Fox, Kevin M
From: Sean McGinnis [sean.mcgin...@gmx.com] Sent: Wednesday, February 10, 2016 2:59 PM To: OpenStack Development Mailing List (not for usage questions) Subject: Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume On Wed, Feb 10, 2016

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-10 Thread Fox, Kevin M
To: OpenStack Development Mailing List (not for usage questions) Subject: Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume On Wed, Feb 10, 2016 at 11:16:28PM +, Fox, Kevin M wrote: > I think part of the issue is whether to co

[openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-09 Thread Walter A. Boring IV
Hey folks, One of the challenges we have faced with the ability to attach a single volume to multiple instances, is how to correctly detach that volume. The issue is a bit complex, but I'll try and explain the problem, and then describe one approach to solving one part of the detach

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-09 Thread Walter A. Boring IV
: February 09, 2016 20:50 To: OpenStack Development Mailing List (not for usage questions) Subject: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume Hey folks, One of the challenges we have faced with the ability to attach a single

Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to call os-brick's connector.disconnect_volume

2016-02-09 Thread Ildikó Váncsa
Hi Walt, > -Original Message- > From: Walter A. Boring IV [mailto:walter.bor...@hpe.com] > Sent: February 09, 2016 23:15 > To: openstack-dev@lists.openstack.org > Subject: Re: [openstack-dev] [Nova][Cinder] Multi-attach, determining when to > call os-brick's connector