Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

> On 5 Aug 2015, at 1:34 am, Joshua Harlow wrote: > > Philipp Marek wrote: >>> If we end up using a DLM then we have to detect when the connection to >>> the DLM is lost on a node and stop all ongoing operations to prevent >>> data corruption. >>> >>> It may not be trivial to do, but we will ha

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Excerpts from Philipp Marek's message of 2015-08-05 00:10:30 -0700: > > > >Well, is it already decided that Pacemaker would be chosen to provide HA in > > >Openstack? There's been a talk "Pacemaker: the PID 1 of Openstack" IIRC. > > > > > >I know that Pacemaker's been pushed aside in an earlier ML

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 2015-08-05 15:48:52 +0200 (+0200), Philipp Marek wrote: [...] > How many cluster stack alternatives can you see in SUSE? > How many cluster stack alternatives are available in _every_ major > distribution? I think it depends a lot on how you define "cluster stack" and whether the solution to th

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

> > Well, SUSE and Redhat (7) use Pacemaker by default, Debian/Ubuntu have it > > (along with others)... > > > > That gives it quite some market share, wouldn't you think? > > > > Yes, I guess the "most popular" meaning is a good match here. > > I see, so in the same way that "nano is *the* Lin

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 2015-08-05 15:31:03 +0200 (+0200), Philipp Marek wrote: > > > > [...] > > > > > Pacemaker is *the* Linux HA Stack. > > > > [...] > > > > > > > > Can you expand on this assertion? It doesn't look to me like it's > > > > part of the Linux source tree and I see strong evidence to suggest > > > > i

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

> > > [...] > > > > Pacemaker is *the* Linux HA Stack. > > > [...] > > > > > > Can you expand on this assertion? It doesn't look to me like it's > > > part of the Linux source tree and I see strong evidence to suggest > > > it's released and distributed completely separately from the kernel. > >

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 2015-08-05 14:36:37 +0200 (+0200), Philipp Marek wrote: > > [...] > > > Pacemaker is *the* Linux HA Stack. > > [...] > > > > Can you expand on this assertion? It doesn't look to me like it's > > part of the Linux source tree and I see strong evidence to suggest > > it's released and distributed

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 17:03 Aug 05, Flavio Percoco wrote: > That said, you may want to sync with Joshua since he's going to work > on a cross-project spec as well (as he mentioned in the other > thread).[0] http://lists.openstack.org/pipermail/openstack-dev/2015-August/071441.html -- Mike Perez

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

> [...] > > Pacemaker is *the* Linux HA Stack. > [...] > > Can you expand on this assertion? It doesn't look to me like it's > part of the Linux source tree and I see strong evidence to suggest > it's released and distributed completely separately from the kernel. If you read "Linux" as "GNU/Linux

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 2015-08-05 09:10:30 +0200 (+0200), Philipp Marek wrote: [...] > Pacemaker is *the* Linux HA Stack. [...] Can you expand on this assertion? It doesn't look to me like it's part of the Linux source tree and I see strong evidence to suggest it's released and distributed completely separately from

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Tue, Aug 04, 2015 at 08:40:13AM -0700, Joshua Harlow wrote: > Clint Byrum wrote: > >Excerpts from Devananda van der Veen's message of 2015-08-03 08:53:21 -0700: > >>On Mon, Aug 3, 2015 at 8:41 AM Joshua Harlow wrote: > >> > >>>Clint Byrum wrote: > Excerpts from Gorka Eguileor's message of 2

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Tue, Aug 04, 2015 at 08:30:17AM -0700, Joshua Harlow wrote: > Duncan Thomas wrote: > >On 3 August 2015 at 20:53, Clint Byrum >> wrote: > > > >Excerpts from Devananda van der Veen's message of 2015-08-03 > >08:53:21 -0700: > >Also on a side note, I think Cind

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

> >Well, is it already decided that Pacemaker would be chosen to provide HA in > >Openstack? There's been a talk "Pacemaker: the PID 1 of Openstack" IIRC. > > > >I know that Pacemaker's been pushed aside in an earlier ML post, but IMO > >there's already *so much* been done for HA in Pacemaker that

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 04/08/15 23:39 -0700, Mike Perez wrote: On Tue, Aug 4, 2015 at 7:47 PM, Morgan Fainberg wrote: On Tue, Aug 4, 2015 at 1:43 AM, Gorka Eguileor wrote: On Tue, Aug 04, 2015 at 05:47:44AM +1000, Morgan Fainberg wrote: > > > On Aug 4, 2015, at 01:42, Fox, Kevin M wrote: > > > > I'm usually f

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Tue, Aug 4, 2015 at 7:47 PM, Morgan Fainberg wrote: > > On Tue, Aug 4, 2015 at 1:43 AM, Gorka Eguileor wrote: >> >> On Tue, Aug 04, 2015 at 05:47:44AM +1000, Morgan Fainberg wrote: >> > >> > > On Aug 4, 2015, at 01:42, Fox, Kevin M wrote: >> > > >> > > I'm usually for abstraction layers, but

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

n OpenStack so we knew where to focus. > Gorka. > > > > > > Thanks, > > > Kevin > > > ________ > > > From: Gorka Eguileor [gegui...@redhat.com] > > > Sent: Monday, August 03, 2015 1:43 AM > > > To: OpenStack De

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

so there's nothing to discuss there, and it's not a square peg on a > > round hole, because it fits perfectly for what it is intended. But once > > you have filled that square hole you need another peg, the round one for > > the round hole. > > > > If people are expecting to find one thing that f

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Excerpts from Duncan Thomas's message of 2015-08-04 00:32:40 -0700: > On 3 August 2015 at 20:53, Clint Byrum wrote: > > > Excerpts from Devananda van der Veen's message of 2015-08-03 08:53:21 > > -0700: > > Also on a side note, I think Cinder's need for this is really subtle, > > and one could ju

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Clint Byrum wrote: Excerpts from Devananda van der Veen's message of 2015-08-03 08:53:21 -0700: On Mon, Aug 3, 2015 at 8:41 AM Joshua Harlow wrote: Clint Byrum wrote: Excerpts from Gorka Eguileor's message of 2015-08-02 15:49:46 -0700: On Fri, Jul 31, 2015 at 01:47:22AM -0700, Mike Perez wr

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Philipp Marek wrote: If we end up using a DLM then we have to detect when the connection to the DLM is lost on a node and stop all ongoing operations to prevent data corruption. It may not be trivial to do, but we will have to do it in any solution we use, even on my last proposal that only uses

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Duncan Thomas wrote: On 3 August 2015 at 20:53, Clint Byrum mailto:cl...@fewbar.com>> wrote: Excerpts from Devananda van der Veen's message of 2015-08-03 08:53:21 -0700: Also on a side note, I think Cinder's need for this is really subtle, and one could just accept that sometimes

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

ng Cinder specifics on this thread. Cheers, Gorka. > Thanks, > Kevin > > > From: Gorka Eguileor > Sent: Tuesday, August 04, 2015 1:39:07 AM > To: OpenStack Development Mailing List (not for usage questions) > Subject: Re: [openstack-dev]

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

: [openstack-dev] [Cinder] A possible solution for HA Active-Active On Mon, Aug 03, 2015 at 06:12:23PM +, Fox, Kevin M wrote: > For example, to parallel the conversation with databases: > > "We want a database". Well, that means mongodb, postgres, mysql, berkeleydb, > etc

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 04/08/15 10:50 +0200, Philipp Marek wrote: If we end up using a DLM then we have to detect when the connection to the DLM is lost on a node and stop all ongoing operations to prevent data corruption. It may not be trivial to do, but we will have to do it in any solution we use, even on my las

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

> If we end up using a DLM then we have to detect when the connection to > the DLM is lost on a node and stop all ongoing operations to prevent > data corruption. > > It may not be trivial to do, but we will have to do it in any solution > we use, even on my last proposal that only uses the DB in

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

ome conversations. Gorka. > > > Thanks, > > Kevin > > > > From: Gorka Eguileor [gegui...@redhat.com] > > Sent: Monday, August 03, 2015 1:43 AM > > To: OpenStack Development Mailing List (not for usage questions) > >

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

mework and read what's already been said to get up to speed on the topic so we can move on. Gorka. > From: Gorka Eguileor [gegui...@redhat.com] > Sent: Monday, August 03, 2015 10:48 AM > To: OpenStack Development Mailing List (not for usage questions) > Subject: Re: [openstack-

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Tue, Aug 04, 2015 at 10:32:40AM +0300, Duncan Thomas wrote: > On 3 August 2015 at 20:53, Clint Byrum wrote: > > > Excerpts from Devananda van der Veen's message of 2015-08-03 08:53:21 > > -0700: > > Also on a side note, I think Cinder's need for this is really subtle, > > and one could just ac

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 3 August 2015 at 20:53, Clint Byrum wrote: > Excerpts from Devananda van der Veen's message of 2015-08-03 08:53:21 > -0700: > Also on a side note, I think Cinder's need for this is really subtle, > and one could just accept that sometimes it's going to break when it does > two things to one re

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 03/08/15 08:32 -0700, Joshua Harlow wrote: Morgan Fainberg wrote: Lets step back away from tooz. Tooz for the sake of this conversation is as much the same as saying zookeeper or consul or etcd, etc. We should be focused (as both Flavio and Thierry said) on if we need DLM and what it will s

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

gegui...@redhat.com] > Sent: Monday, August 03, 2015 1:43 AM > To: OpenStack Development Mailing List (not for usage questions) > Subject: Re: [openstack-dev] [Cinder] A possible solution for HA > Active-Active > >> On Mon, Aug 03, 2015 at 10:22:42AM +0200, Thierry Car

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

From: Gorka Eguileor [gegui...@redhat.com] > Sent: Monday, August 03, 2015 1:43 AM > To: OpenStack Development Mailing List (not for usage questions) > Subject: Re: [openstack-dev] [Cinder] A possible solution for HA > Active-Active > > On Mon, Aug 03, 2015 at 10:22:42AM

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Excerpts from Devananda van der Veen's message of 2015-08-03 08:53:21 -0700: > On Mon, Aug 3, 2015 at 8:41 AM Joshua Harlow wrote: > > > Clint Byrum wrote: > > > Excerpts from Gorka Eguileor's message of 2015-08-02 15:49:46 -0700: > > >> On Fri, Jul 31, 2015 at 01:47:22AM -0700, Mike Perez wrote:

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

From: Gorka Eguileor [mailto:gegui...@redhat.com] Sent: Monday, August 03, 2015 11:38 AM To: OpenStack Development Mailing List (not for usage questions) Subject: Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active On Mon, Aug 03, 2015 at 07:01:45PM +1000, Morgan Fainberg wrote: &

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

day, August 03, 2015 1:43 AM > To: OpenStack Development Mailing List (not for usage questions) > Subject: Re: [openstack-dev] [Cinder] A possible solution for HA > Active-Active > > On Mon, Aug 03, 2015 at 10:22:42AM +0200, Thierry Carrez wrote: > > Flavio Percoco wro

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Mon, Aug 03, 2015 at 07:01:45PM +1000, Morgan Fainberg wrote: > Lets step back away from tooz. Tooz for the sake of this conversation is as > much the same as saying zookeeper or consul or etcd, etc. We should be > focused (as both Flavio and Thierry said) on if we need DLM and what it will >

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Devananda van der Veen wrote: On Mon, Aug 3, 2015 at 8:41 AM Joshua Harlow mailto:harlo...@outlook.com>> wrote: Clint Byrum wrote: > Excerpts from Gorka Eguileor's message of 2015-08-02 15:49:46 -0700: >> On Fri, Jul 31, 2015 at 01:47:22AM -0700, Mike Perez wrote: >>> On Mon

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Mon, Aug 3, 2015 at 8:41 AM Joshua Harlow wrote: > Clint Byrum wrote: > > Excerpts from Gorka Eguileor's message of 2015-08-02 15:49:46 -0700: > >> On Fri, Jul 31, 2015 at 01:47:22AM -0700, Mike Perez wrote: > >>> On Mon, Jul 27, 2015 at 12:35 PM, Gorka Eguileor > wrote: > I know we've al

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

stions) Subject: Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active On Mon, Aug 03, 2015 at 10:22:42AM +0200, Thierry Carrez wrote: > Flavio Percoco wrote: > > [...] > > So, to summarize, I love the effort behind this. But, as others have > > mentio

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Clint Byrum wrote: Excerpts from Gorka Eguileor's message of 2015-08-02 15:49:46 -0700: On Fri, Jul 31, 2015 at 01:47:22AM -0700, Mike Perez wrote: On Mon, Jul 27, 2015 at 12:35 PM, Gorka Eguileor wrote: I know we've all been looking at the HA Active-Active problem in Cinder and trying our be

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

+1. From: Flavio Percoco [fla...@redhat.com] Sent: Monday, August 03, 2015 12:30 AM To: OpenStack Development Mailing List (not for usage questions) Subject: Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active On 03/08/15 00:49

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Morgan Fainberg wrote: Lets step back away from tooz. Tooz for the sake of this conversation is as much the same as saying zookeeper or consul or etcd, etc. We should be focused (as both Flavio and Thierry said) on if we need DLM and what it will solve. So IMHO part of the problem with just

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

lopment Mailing List (not for usage questions) Subject: Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active On Mon, Aug 03, 2015 at 10:22:42AM +0200, Thierry Carrez wrote: > Flavio Percoco wrote: > > [...] > > So, to summarize, I love the effort behind this. But, as

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Lets step back away from tooz. Tooz for the sake of this conversation is as much the same as saying zookeeper or consul or etcd, etc. We should be focused (as both Flavio and Thierry said) on if we need DLM and what it will solve. Once we have all of that defined, the use of an abstraction such

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Mon, Aug 03 2015, Thierry Carrez wrote: > The last thing we want is to rush a solution that would only solve a > particular project use case. Personally I'd like us to pick the simplest > solution that can solve most of the use cases. Each of the solutions > bring something to the table -- Zook

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Mon, Aug 03, 2015 at 10:22:42AM +0200, Thierry Carrez wrote: > Flavio Percoco wrote: > > [...] > > So, to summarize, I love the effort behind this. But, as others have > > mentioned, I'd like us to take a step back, run this accross teams and > > come up with an opinonated solution that would wo

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Flavio Percoco wrote: > [...] > So, to summarize, I love the effort behind this. But, as others have > mentioned, I'd like us to take a step back, run this accross teams and > come up with an opinonated solution that would work for everyone. > > Starting this discussion now would allow us to prepa

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Mon, Aug 03, 2015 at 12:28:27AM -0700, Clint Byrum wrote: > Excerpts from Gorka Eguileor's message of 2015-08-02 15:49:46 -0700: > > On Fri, Jul 31, 2015 at 01:47:22AM -0700, Mike Perez wrote: > > > On Mon, Jul 27, 2015 at 12:35 PM, Gorka Eguileor > > > wrote: > > > > I know we've all been loo

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Fri, Jul 31, 2015 at 03:18:39PM -0700, Clint Byrum wrote: > Excerpts from Mike Perez's message of 2015-07-31 10:40:04 -0700: > > On Fri, Jul 31, 2015 at 8:56 AM, Joshua Harlow wrote: > > > ...random thought here, skip as needed... in all honesty orchestration > > > solutions like mesos > > > (h

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 03/08/15 00:49 +0200, Gorka Eguileor wrote: On Fri, Jul 31, 2015 at 01:47:22AM -0700, Mike Perez wrote: On Mon, Jul 27, 2015 at 12:35 PM, Gorka Eguileor wrote: > I know we've all been looking at the HA Active-Active problem in Cinder > and trying our best to figure out possible solutions to

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Excerpts from Gorka Eguileor's message of 2015-08-02 15:49:46 -0700: > On Fri, Jul 31, 2015 at 01:47:22AM -0700, Mike Perez wrote: > > On Mon, Jul 27, 2015 at 12:35 PM, Gorka Eguileor > > wrote: > > > I know we've all been looking at the HA Active-Active problem in Cinder > > > and trying our bes

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Fri, Jul 31, 2015 at 01:47:22AM -0700, Mike Perez wrote: > On Mon, Jul 27, 2015 at 12:35 PM, Gorka Eguileor wrote: > > I know we've all been looking at the HA Active-Active problem in Cinder > > and trying our best to figure out possible solutions to the different > > issues, and since current

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

I couldn't put it better, nice write up Morgan!! +1 On Sun, Aug 2, 2015 at 10:28 AM, Morgan Fainberg wrote: > > > > > On Aug 2, 2015, at 16:00, Daniel Comnea wrote: > > > > From Operators point of view i'd love to see less technology > proliferation in OpenStack, if you wear the developer hat p

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

> On Aug 2, 2015, at 16:00, Daniel Comnea wrote: > > From Operators point of view i'd love to see less technology proliferation in > OpenStack, if you wear the developer hat please don't be selfish, take into > account the others :) > > ZK is a robust technology but hey is a beast like Rabb

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

> On Aug 1, 2015, at 09:51, Monty Taylor wrote: > >> On 08/01/2015 03:40 AM, Mike Perez wrote: >>> On Fri, Jul 31, 2015 at 8:56 AM, Joshua Harlow wrote: >>> ...random thought here, skip as needed... in all honesty orchestration >>> solutions like mesos >>> (http://mesos.apache.org/assets/img/d

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Daniel Comnea wrote: From Operators point of view i'd love to see less technology proliferation in OpenStack, if you wear the developer hat please don't be selfish, take into account the others :) ZK is a robust technology but hey is a beast like Rabbit, there is a lot to massage and over 2 dat

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

>From Operators point of view i'd love to see less technology proliferation in OpenStack, if you wear the developer hat please don't be selfish, take into account the others :) ZK is a robust technology but hey is a beast like Rabbit, there is a lot to massage and over 2 data centers ZK is not ver

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Sat, Aug 1, 2015 at 2:51 AM, Monty Taylor wrote: > I hear tell that there a bunch of ops people who are in love with consul > At my company we love Consul. We found it to be very scalable and performant, gives us an easy-to-use k/v store, membership service, DNS, etc. We use it to load bala

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Monty Taylor wrote: On 08/01/2015 03:40 AM, Mike Perez wrote: On Fri, Jul 31, 2015 at 8:56 AM, Joshua Harlow wrote: ...random thought here, skip as needed... in all honesty orchestration solutions like mesos (http://mesos.apache.org/assets/img/documentation/architecture3.jpg), map-reduce solut

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 08/01/2015 03:40 AM, Mike Perez wrote: > On Fri, Jul 31, 2015 at 8:56 AM, Joshua Harlow wrote: >> ...random thought here, skip as needed... in all honesty orchestration >> solutions like mesos >> (http://mesos.apache.org/assets/img/documentation/architecture3.jpg), >> map-reduce solutions like

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Clint Byrum wrote: Excerpts from Mike Perez's message of 2015-07-31 10:40:04 -0700: On Fri, Jul 31, 2015 at 8:56 AM, Joshua Harlow wrote: ...random thought here, skip as needed... in all honesty orchestration solutions like mesos (http://mesos.apache.org/assets/img/documentation/architecture3.

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Excerpts from Mike Perez's message of 2015-07-31 10:40:04 -0700: > On Fri, Jul 31, 2015 at 8:56 AM, Joshua Harlow wrote: > > ...random thought here, skip as needed... in all honesty orchestration > > solutions like mesos > > (http://mesos.apache.org/assets/img/documentation/architecture3.jpg), > >

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Mike Perez wrote: On Fri, Jul 31, 2015 at 8:56 AM, Joshua Harlow wrote: ...random thought here, skip as needed... in all honesty orchestration solutions like mesos (http://mesos.apache.org/assets/img/documentation/architecture3.jpg), map-reduce solutions like hadoop, stream processing systems l

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On 31 July 2015 at 20:40, Mike Perez wrote: > > Regardless, I want to know if we really need a DLM. Does Ceilometer > really need a DLM? Does Cinder really need a DLM? Can we just use a > hash ring solution where operators don't even have to know or care > about deploying a DLM and running multip

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Fri, Jul 31, 2015 at 8:56 AM, Joshua Harlow wrote: > ...random thought here, skip as needed... in all honesty orchestration > solutions like mesos > (http://mesos.apache.org/assets/img/documentation/architecture3.jpg), > map-reduce solutions like hadoop, stream processing systems like apache >

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Mike Perez wrote: On Mon, Jul 27, 2015 at 12:35 PM, Gorka Eguileor wrote: I know we've all been looking at the HA Active-Active problem in Cinder and trying our best to figure out possible solutions to the different issues, and since current plan is going to take a while (because it requires th

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Fri, Jul 31, 2015 at 01:47:22AM -0700, Mike Perez wrote: > On Mon, Jul 27, 2015 at 12:35 PM, Gorka Eguileor wrote: > > I know we've all been looking at the HA Active-Active problem in Cinder > > and trying our best to figure out possible solutions to the different > > issues, and since current

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

On Mon, Jul 27, 2015 at 12:35 PM, Gorka Eguileor wrote: > I know we've all been looking at the HA Active-Active problem in Cinder > and trying our best to figure out possible solutions to the different > issues, and since current plan is going to take a while (because it > requires that we finish

Re: [openstack-dev] [Cinder] A possible solution for HA Active-Active

Thanks for this work Gorka. Even if we don't end up taking the approach you suggest, there are parts that are undoubtedly useful piece of quality, well thought out code, posted in clean patches, that can be used to easily try out ideas that were not possible previously. I'm both impressed, and imth

[openstack-dev] [Cinder] A possible solution for HA Active-Active

Hi all, I know we've all been looking at the HA Active-Active problem in Cinder and trying our best to figure out possible solutions to the different issues, and since current plan is going to take a while (because it requires that we finish first fixing Cinder-Nova interactions), I've been lookin