Re: [ovirt-users] Unable to put Host into Maintenance mode

[Mark Steele]

So - to get this back on track - I was able to remove the host entirely
from HostedEngine using ovirt-shell - but now cannot add it back for the
same reason as not being able to add ANY hosts to this cluster (there is
another email thread on this):


***
*Mark Steele*
CIO / VP Technical Operations | TelVue Corporation
TelVue - We Share Your Vision
16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
800.885.8886 x128 | mste...@telvue.com | http://www.telvue.com
twitter: http://twitter.com/telvue | facebook:
https://www.facebook.com/telvue

On Fri, Feb 16, 2018 at 3:30 PM, Yaniv Kaul  wrote:

>
>
> On Feb 15, 2018 7:35 PM, "Christopher Cox"  wrote:
>
> On 02/15/2018 11:10 AM, Michal Skrivanek wrote:
> ..snippity... with regards to oVirt 3.5
>
>
>> that’s a really old version….
>>
>
> I know I'll catch heat for this, but by "old" you mean like December of
> 2015?  Just trying put things into perspective.  Thus it goes with the
> ancient and decrepit Red Hat Ent. 7.1 days, right?
>
> I know, I know, FOSS... the only thing worse than running today's code is
> running yesterday's.
>
> We still run a 3.5 oVirt in our dev lab, btw.  But I would not have set
> that up (not that I would have recommended oVirt to begin with), preferring
> 3.4 at the time.  I would have waited for 3.6.
>
> With that said, 3.5 isn't exactly on the "stable line" to Red Hat
> Virtualization, that was 3.4 and then 3.6.
>
>
> Red Hat doesn't support 3.x anymore, unless its 3.6 with specific
> subscription that extends its support.
>
>
> Some people can't afford major (downtime) upgrades every 3-6 months or
> so.  But, arguably, maybe we shouldn't be running oVirt.  Maybe it's not
> designed for "production".
>
>
> 3.4,5,6 are minor releases of 3.x.
> The same way that 4.1 and 4.2 are minor releases of 4.x.
> I agree that with lots of changing landscape (for example, the move from
> EL6 to EL7) and with the number of features introduced, they don't seem
> that minor. But there's an ongoing effort to both keep backwards
> compatibility as well continously improve quality - which regretfully,
> requires updating from time to time.
>
>
> I guess oVirt isn't really for production by definition, but many of us
> are doing so.
>
> So... not really a "ding" against oVirt developers, it's just a rapidly
> moving target with the normal risks that come with that.  People just need
> to understand that.
>
> And with that said, the fact that many of us are running those ancient
> decrepit evil versions of oVirt in production today, is actually a
> testimony to its quality.  Good job devs!
>
>
> Or a warning sign that upgrade is not yet easy as it should be. I believe
> we've improved the experience and quality of the upgrade flow over time,
> but we can certainly do a better job.
>
> I also think there are two additional factors :
> 1. Don't fix what ain't broken - it works, why bother? Not much the oVirt
> community can do here.
> 2. Newer versions do not provide enough incentive to upgrade. This is a
> tougher one - I believe they do, both in terms of quality as well as new
> features that bring value to different use-cases. However, we may not be
> doing enough 'marketing' work around them, or they are not documented well
> enough, etc.
> Y.
>
>
>
>
> ___
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> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
>
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>
>
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Re: [ovirt-users] Unable to put Host into Maintenance mode

[Yaniv Kaul]

On Feb 15, 2018 7:35 PM, "Christopher Cox"  wrote:

On 02/15/2018 11:10 AM, Michal Skrivanek wrote:
..snippity... with regards to oVirt 3.5


> that’s a really old version….
>

I know I'll catch heat for this, but by "old" you mean like December of
2015?  Just trying put things into perspective.  Thus it goes with the
ancient and decrepit Red Hat Ent. 7.1 days, right?

I know, I know, FOSS... the only thing worse than running today's code is
running yesterday's.

We still run a 3.5 oVirt in our dev lab, btw.  But I would not have set
that up (not that I would have recommended oVirt to begin with), preferring
3.4 at the time.  I would have waited for 3.6.

With that said, 3.5 isn't exactly on the "stable line" to Red Hat
Virtualization, that was 3.4 and then 3.6.


Red Hat doesn't support 3.x anymore, unless its 3.6 with specific
subscription that extends its support.


Some people can't afford major (downtime) upgrades every 3-6 months or so.
But, arguably, maybe we shouldn't be running oVirt.  Maybe it's not
designed for "production".


3.4,5,6 are minor releases of 3.x.
The same way that 4.1 and 4.2 are minor releases of 4.x.
I agree that with lots of changing landscape (for example, the move from
EL6 to EL7) and with the number of features introduced, they don't seem
that minor. But there's an ongoing effort to both keep backwards
compatibility as well continously improve quality - which regretfully,
requires updating from time to time.


I guess oVirt isn't really for production by definition, but many of us are
doing so.

So... not really a "ding" against oVirt developers, it's just a rapidly
moving target with the normal risks that come with that.  People just need
to understand that.

And with that said, the fact that many of us are running those ancient
decrepit evil versions of oVirt in production today, is actually a
testimony to its quality.  Good job devs!


Or a warning sign that upgrade is not yet easy as it should be. I believe
we've improved the experience and quality of the upgrade flow over time,
but we can certainly do a better job.

I also think there are two additional factors :
1. Don't fix what ain't broken - it works, why bother? Not much the oVirt
community can do here.
2. Newer versions do not provide enough incentive to upgrade. This is a
tougher one - I believe they do, both in terms of quality as well as new
features that bring value to different use-cases. However, we may not be
doing enough 'marketing' work around them, or they are not documented well
enough, etc.
Y.




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Re: [ovirt-users] Unable to put Host into Maintenance mode

[Mark Steele]

Using the ovirt-shell, I find that there are no vms assigned to this host:

[oVirt shell (connected)]# list vms --query "host=hv-01"

So I'm now looking to see where the host is reporting back to the engine
that it has migrations in progress. Anyone know where to look for that?

Thanks!


***
*Mark Steele*
CIO / VP Technical Operations | TelVue Corporation
TelVue - We Share Your Vision
16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
800.885.8886 x128 | mste...@telvue.com | http://www.telvue.com
twitter: http://twitter.com/telvue | facebook:
https://www.facebook.com/telvue

On Thu, Feb 15, 2018 at 4:35 PM, Alex K  wrote:

> Yes you can.
>
> On Feb 15, 2018 23:09, "Mark Steele"  wrote:
>
>> I have with no joy.
>>
>> Question: Can I restart the HostedEngine with running VM's without
>> negatively impacting them?
>>
>>
>> ***
>> *Mark Steele*
>> CIO / VP Technical Operations | TelVue Corporation
>> TelVue - We Share Your Vision
>> 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
>> 
>> 800.885.8886 x128 <800%20885%208886> | mste...@telvue.com | http://
>> www.telvue.com
>> twitter: http://twitter.com/telvue | facebook: https://www.facebook
>> .com/telvue
>>
>> On Thu, Feb 15, 2018 at 1:41 PM, Alexander Wels  wrote:
>>
>>> On Thursday, February 15, 2018 1:14:44 PM EST Mark Steele wrote:
>>> > Michal,
>>> >
>>> > Thank you for the response.
>>> >
>>> > - there are no qemu processes running
>>> > - the server has been rebooted several times
>>> > - the engine has been rebooted several times
>>> >
>>> > The issue persists. I'm not sure where to look next.
>>> >
>>>
>>> Have you tried right clicking on the host, and select 'Confirm Host has
>>> been
>>> rebooted' that is basically telling the engine that the host is fenced,
>>> and
>>> you should be able to put it into maintenance mode. It will ask
>>> confirmation
>>> but we know the host has been rebooted and nothing is running.
>>>
>>> >
>>> > ***
>>> > *Mark Steele*
>>> > CIO / VP Technical Operations | TelVue Corporation
>>> > TelVue - We Share Your Vision
>>> > 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
>>> 
>>> > 800.885.8886 x128 | mste...@telvue.com | http://www.telvue.com
>>> > twitter: http://twitter.com/telvue | facebook:
>>> > https://www.facebook.com/telvue
>>> >
>>> > On Thu, Feb 15, 2018 at 12:10 PM, Michal Skrivanek <
>>> >
>>> > michal.skriva...@redhat.com> wrote:
>>> > > On 15 Feb 2018, at 12:06, Mark Steele  wrote:
>>> > >
>>> > > I have a host that is currently reporting down with NO VM's on it or
>>> > > associated with it. However when I attempt to put it into maintenance
>>> > > mode,
>>> > > I get the following error:
>>> > >
>>> > > Host hv-01 cannot change into maintenance mode - not all Vms have
>>> been
>>> > > migrated successfully. Consider manual intervention:
>>> stopping/migrating
>>> > > Vms:  (User: admin)
>>> > >
>>> > > I am running
>>> > > oVirt Engine Version: 3.5.0.1-1.el6
>>> > >
>>> > >
>>> > > that’s a really old version….
>>> > >
>>> > > first confirm there is no running vm on that host (log in there,
>>> look for
>>> > > qemu processes)
>>> > > if not, it’s likely just engine issue, somewhere it lost track of
>>> what’s
>>> > > actually running there - in that case you could try to restart the
>>> host,
>>> > > restart engine. that should help
>>> > >
>>> > >
>>> > > ***
>>> > > *Mark Steele*
>>> > > CIO / VP Technical Operations | TelVue Corporation
>>> > > TelVue - We Share Your Vision
>>> > > 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
>>> 
>>> > > >> +Mt.+Laurel,+N
>>> > > J+08054=gmail=g> 800.885.8886 x128 <(800)%20885-8886> |
>>> > > mste...@telvue.com | http:// www.telvue.com
>>> > > twitter: http://twitter.com/telvue | facebook: https://www.
>>> > > facebook.com/telvue
>>> > > ___
>>> > > Users mailing list
>>> > > Users@ovirt.org
>>> > > http://lists.ovirt.org/mailman/listinfo/users
>>>
>>>
>>>
>>
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
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Re: [ovirt-users] Unable to put Host into Maintenance mode

[Alex K]

Yes you can.

On Feb 15, 2018 23:09, "Mark Steele"  wrote:

> I have with no joy.
>
> Question: Can I restart the HostedEngine with running VM's without
> negatively impacting them?
>
>
> ***
> *Mark Steele*
> CIO / VP Technical Operations | TelVue Corporation
> TelVue - We Share Your Vision
> 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
> 800.885.8886 x128 <800%20885%208886> | mste...@telvue.com | http://
> www.telvue.com
> twitter: http://twitter.com/telvue | facebook: https://www.
> facebook.com/telvue
>
> On Thu, Feb 15, 2018 at 1:41 PM, Alexander Wels  wrote:
>
>> On Thursday, February 15, 2018 1:14:44 PM EST Mark Steele wrote:
>> > Michal,
>> >
>> > Thank you for the response.
>> >
>> > - there are no qemu processes running
>> > - the server has been rebooted several times
>> > - the engine has been rebooted several times
>> >
>> > The issue persists. I'm not sure where to look next.
>> >
>>
>> Have you tried right clicking on the host, and select 'Confirm Host has
>> been
>> rebooted' that is basically telling the engine that the host is fenced,
>> and
>> you should be able to put it into maintenance mode. It will ask
>> confirmation
>> but we know the host has been rebooted and nothing is running.
>>
>> >
>> > ***
>> > *Mark Steele*
>> > CIO / VP Technical Operations | TelVue Corporation
>> > TelVue - We Share Your Vision
>> > 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
>> > 800.885.8886 x128 | mste...@telvue.com | http://www.telvue.com
>> > twitter: http://twitter.com/telvue | facebook:
>> > https://www.facebook.com/telvue
>> >
>> > On Thu, Feb 15, 2018 at 12:10 PM, Michal Skrivanek <
>> >
>> > michal.skriva...@redhat.com> wrote:
>> > > On 15 Feb 2018, at 12:06, Mark Steele  wrote:
>> > >
>> > > I have a host that is currently reporting down with NO VM's on it or
>> > > associated with it. However when I attempt to put it into maintenance
>> > > mode,
>> > > I get the following error:
>> > >
>> > > Host hv-01 cannot change into maintenance mode - not all Vms have been
>> > > migrated successfully. Consider manual intervention:
>> stopping/migrating
>> > > Vms:  (User: admin)
>> > >
>> > > I am running
>> > > oVirt Engine Version: 3.5.0.1-1.el6
>> > >
>> > >
>> > > that’s a really old version….
>> > >
>> > > first confirm there is no running vm on that host (log in there, look
>> for
>> > > qemu processes)
>> > > if not, it’s likely just engine issue, somewhere it lost track of
>> what’s
>> > > actually running there - in that case you could try to restart the
>> host,
>> > > restart engine. that should help
>> > >
>> > >
>> > > ***
>> > > *Mark Steele*
>> > > CIO / VP Technical Operations | TelVue Corporation
>> > > TelVue - We Share Your Vision
>> > > 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
>> > > > +Mt.+Laurel,+N
>> > > J+08054=gmail=g> 800.885.8886 x128 <(800)%20885-8886> |
>> > > mste...@telvue.com | http:// www.telvue.com
>> > > twitter: http://twitter.com/telvue | facebook: https://www.
>> > > facebook.com/telvue
>> > > ___
>> > > Users mailing list
>> > > Users@ovirt.org
>> > > http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>>
>
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
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Re: [ovirt-users] Unable to put Host into Maintenance mode

[Mark Steele]

I have with no joy.

Question: Can I restart the HostedEngine with running VM's without
negatively impacting them?


***
*Mark Steele*
CIO / VP Technical Operations | TelVue Corporation
TelVue - We Share Your Vision
16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
800.885.8886 x128 | mste...@telvue.com | http://www.telvue.com
twitter: http://twitter.com/telvue | facebook:
https://www.facebook.com/telvue

On Thu, Feb 15, 2018 at 1:41 PM, Alexander Wels  wrote:

> On Thursday, February 15, 2018 1:14:44 PM EST Mark Steele wrote:
> > Michal,
> >
> > Thank you for the response.
> >
> > - there are no qemu processes running
> > - the server has been rebooted several times
> > - the engine has been rebooted several times
> >
> > The issue persists. I'm not sure where to look next.
> >
>
> Have you tried right clicking on the host, and select 'Confirm Host has
> been
> rebooted' that is basically telling the engine that the host is fenced, and
> you should be able to put it into maintenance mode. It will ask
> confirmation
> but we know the host has been rebooted and nothing is running.
>
> >
> > ***
> > *Mark Steele*
> > CIO / VP Technical Operations | TelVue Corporation
> > TelVue - We Share Your Vision
> > 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
> > 800.885.8886 x128 | mste...@telvue.com | http://www.telvue.com
> > twitter: http://twitter.com/telvue | facebook:
> > https://www.facebook.com/telvue
> >
> > On Thu, Feb 15, 2018 at 12:10 PM, Michal Skrivanek <
> >
> > michal.skriva...@redhat.com> wrote:
> > > On 15 Feb 2018, at 12:06, Mark Steele  wrote:
> > >
> > > I have a host that is currently reporting down with NO VM's on it or
> > > associated with it. However when I attempt to put it into maintenance
> > > mode,
> > > I get the following error:
> > >
> > > Host hv-01 cannot change into maintenance mode - not all Vms have been
> > > migrated successfully. Consider manual intervention: stopping/migrating
> > > Vms:  (User: admin)
> > >
> > > I am running
> > > oVirt Engine Version: 3.5.0.1-1.el6
> > >
> > >
> > > that’s a really old version….
> > >
> > > first confirm there is no running vm on that host (log in there, look
> for
> > > qemu processes)
> > > if not, it’s likely just engine issue, somewhere it lost track of
> what’s
> > > actually running there - in that case you could try to restart the
> host,
> > > restart engine. that should help
> > >
> > >
> > > ***
> > > *Mark Steele*
> > > CIO / VP Technical Operations | TelVue Corporation
> > > TelVue - We Share Your Vision
> > > 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
> > >  7C+Mt.+Laurel,+N
> > > J+08054=gmail=g> 800.885.8886 x128 <(800)%20885-8886> |
> > > mste...@telvue.com | http:// www.telvue.com
> > > twitter: http://twitter.com/telvue | facebook: https://www.
> > > facebook.com/telvue
> > > ___
> > > Users mailing list
> > > Users@ovirt.org
> > > http://lists.ovirt.org/mailman/listinfo/users
>
>
>
___
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Re: [ovirt-users] Unable to put Host into Maintenance mode

[Alexander Wels]

On Thursday, February 15, 2018 1:14:44 PM EST Mark Steele wrote:
> Michal,
> 
> Thank you for the response.
> 
> - there are no qemu processes running
> - the server has been rebooted several times
> - the engine has been rebooted several times
> 
> The issue persists. I'm not sure where to look next.
> 

Have you tried right clicking on the host, and select 'Confirm Host has been 
rebooted' that is basically telling the engine that the host is fenced, and 
you should be able to put it into maintenance mode. It will ask confirmation 
but we know the host has been rebooted and nothing is running.

> 
> ***
> *Mark Steele*
> CIO / VP Technical Operations | TelVue Corporation
> TelVue - We Share Your Vision
> 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
> 800.885.8886 x128 | mste...@telvue.com | http://www.telvue.com
> twitter: http://twitter.com/telvue | facebook:
> https://www.facebook.com/telvue
> 
> On Thu, Feb 15, 2018 at 12:10 PM, Michal Skrivanek <
> 
> michal.skriva...@redhat.com> wrote:
> > On 15 Feb 2018, at 12:06, Mark Steele  wrote:
> > 
> > I have a host that is currently reporting down with NO VM's on it or
> > associated with it. However when I attempt to put it into maintenance
> > mode,
> > I get the following error:
> > 
> > Host hv-01 cannot change into maintenance mode - not all Vms have been
> > migrated successfully. Consider manual intervention: stopping/migrating
> > Vms:  (User: admin)
> > 
> > I am running
> > oVirt Engine Version: 3.5.0.1-1.el6
> > 
> > 
> > that’s a really old version….
> > 
> > first confirm there is no running vm on that host (log in there, look for
> > qemu processes)
> > if not, it’s likely just engine issue, somewhere it lost track of what’s
> > actually running there - in that case you could try to restart the host,
> > restart engine. that should help
> > 
> > 
> > ***
> > *Mark Steele*
> > CIO / VP Technical Operations | TelVue Corporation
> > TelVue - We Share Your Vision
> > 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
> >  > J+08054=gmail=g> 800.885.8886 x128 <(800)%20885-8886> |
> > mste...@telvue.com | http:// www.telvue.com
> > twitter: http://twitter.com/telvue | facebook: https://www.
> > facebook.com/telvue
> > ___
> > Users mailing list
> > Users@ovirt.org
> > http://lists.ovirt.org/mailman/listinfo/users


___
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Re: [ovirt-users] Unable to put Host into Maintenance mode

[Michal Skrivanek]

On 15 Feb 2018, at 18:34, Christopher Cox  wrote:

On 02/15/2018 11:10 AM, Michal Skrivanek wrote:
..snippity... with regards to oVirt 3.5

that’s a really old version….


I know I'll catch heat for this, but by "old" you mean like December of
2015?  Just trying put things into perspective.  Thus it goes with the
ancient and decrepit Red Hat Ent. 7.1 days, right?


Hehe. It’s not about using it, rather I was referring to the fact that we
stopped developing it, stopped fixing even critical security issues.  Same
for 3.6, and 4.0.

I know, I know, FOSS... the only thing worse than running today's code is
running yesterday's.


Well, there is only a limited amount of resources you can devote to
actively maintain branches/releases
We typically do that for two versions, covering roughly 1,5 years

We still run a 3.5 oVirt in our dev lab, btw.  But I would not have set
that up (not that I would have recommended oVirt to begin with), preferring
3.4 at the time.  I would have waited for 3.6.

With that said, 3.5 isn't exactly on the "stable line" to Red Hat
Virtualization, that was 3.4 and then 3.6.

Some people can't afford major (downtime) upgrades every 3-6 months or so.


That’s why we do not really require it and still support 3.6 cluster compat
in 4.2, so that does give you longer time to update. And even the cluster
upgrades are rolling, we do not require any real downtime other than for
rebooting individual VMs and some spare capacity to migrate workloads to
during host upgrade.


But, arguably, maybe we shouldn't be running oVirt.  Maybe it's not
designed for "production".

I guess oVirt isn't really for production by definition, but many of us are
doing so.


So... not really a "ding" against oVirt developers, it's just a rapidly
moving target with the normal risks that come with that.  People just need
to understand that.


Absolutely. People should understand the difference between a GA and a
zstream update 6 months later. Every sw has bugs.
But I would argue we do actually have quite a long supported versions, when
compared to a $random project.
And then yes, we do have a longer support for Red Hat Virtualization, but
again in general I would doubt you can find many similar commercial
products being _actively_ supported for more than few years


And with that said, the fact that many of us are running those ancient
decrepit evil versions of oVirt in production today, is actually a
testimony to its quality.  Good job devs!


Thanks!



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Re: [ovirt-users] Unable to put Host into Maintenance mode

[Mark Steele]

Michal,

Thank you for the response.

- there are no qemu processes running
- the server has been rebooted several times
- the engine has been rebooted several times

The issue persists. I'm not sure where to look next.


***
*Mark Steele*
CIO / VP Technical Operations | TelVue Corporation
TelVue - We Share Your Vision
16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
800.885.8886 x128 | mste...@telvue.com | http://www.telvue.com
twitter: http://twitter.com/telvue | facebook:
https://www.facebook.com/telvue

On Thu, Feb 15, 2018 at 12:10 PM, Michal Skrivanek <
michal.skriva...@redhat.com> wrote:

>
>
> On 15 Feb 2018, at 12:06, Mark Steele  wrote:
>
> I have a host that is currently reporting down with NO VM's on it or
> associated with it. However when I attempt to put it into maintenance mode,
> I get the following error:
>
> Host hv-01 cannot change into maintenance mode - not all Vms have been
> migrated successfully. Consider manual intervention: stopping/migrating
> Vms:  (User: admin)
>
> I am running
> oVirt Engine Version: 3.5.0.1-1.el6
>
>
> that’s a really old version….
>
> first confirm there is no running vm on that host (log in there, look for
> qemu processes)
> if not, it’s likely just engine issue, somewhere it lost track of what’s
> actually running there - in that case you could try to restart the host,
> restart engine. that should help
>
>
> ***
> *Mark Steele*
> CIO / VP Technical Operations | TelVue Corporation
> TelVue - We Share Your Vision
> 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
> 
> 800.885.8886 x128 <(800)%20885-8886> | mste...@telvue.com | http://
> www.telvue.com
> twitter: http://twitter.com/telvue | facebook: https://www.
> facebook.com/telvue
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
>
___
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Re: [ovirt-users] Unable to put Host into Maintenance mode

[Christopher Cox]

On 02/15/2018 11:10 AM, Michal Skrivanek wrote:
..snippity... with regards to oVirt 3.5


that’s a really old version….


I know I'll catch heat for this, but by "old" you mean like December of 
2015?  Just trying put things into perspective.  Thus it goes with the 
ancient and decrepit Red Hat Ent. 7.1 days, right?


I know, I know, FOSS... the only thing worse than running today's code 
is running yesterday's.


We still run a 3.5 oVirt in our dev lab, btw.  But I would not have set 
that up (not that I would have recommended oVirt to begin with), 
preferring 3.4 at the time.  I would have waited for 3.6.


With that said, 3.5 isn't exactly on the "stable line" to Red Hat 
Virtualization, that was 3.4 and then 3.6.


Some people can't afford major (downtime) upgrades every 3-6 months or 
so.  But, arguably, maybe we shouldn't be running oVirt.  Maybe it's not 
designed for "production".


I guess oVirt isn't really for production by definition, but many of us 
are doing so.


So... not really a "ding" against oVirt developers, it's just a rapidly 
moving target with the normal risks that come with that.  People just 
need to understand that.


And with that said, the fact that many of us are running those ancient 
decrepit evil versions of oVirt in production today, is actually a 
testimony to its quality.  Good job devs!



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Re: [ovirt-users] Unable to put Host into Maintenance mode

[Michal Skrivanek]

> On 15 Feb 2018, at 12:06, Mark Steele  wrote:
> 
> I have a host that is currently reporting down with NO VM's on it or 
> associated with it. However when I attempt to put it into maintenance mode, I 
> get the following error:
> 
> Host hv-01 cannot change into maintenance mode - not all Vms have been 
> migrated successfully. Consider manual intervention: stopping/migrating Vms: 
>  (User: admin)
> 
> I am running 
> oVirt Engine Version: 3.5.0.1-1.el6

that’s a really old version….

first confirm there is no running vm on that host (log in there, look for qemu 
processes)
if not, it’s likely just engine issue, somewhere it lost track of what’s 
actually running there - in that case you could try to restart the host, 
restart engine. that should help

> 
> ***
> Mark Steele
> CIO / VP Technical Operations | TelVue Corporation
> TelVue - We Share Your Vision
> 16000 Horizon Way, Suite 100 | Mt. Laurel, NJ 08054
> 800.885.8886 x128 | mste...@telvue.com  | 
> http://www.telvue.com 
> twitter: http://twitter.com/telvue  | facebook: 
> https://www.facebook.com/telvue 
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Re: [ovirt-users] Unable to put Host into Maintenance mode

[Reznikov Alexei]

15.02.2018 14:06, Mark Steele пишет:

Consider manual intervention


vdsClient -s 0 list table on your host

and then vdsClient -s 0 destroy vmID

Regards,

Alex.

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