Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Steven Dake (stdake)]

Paul,

There is no request from the Kolla community to churn the images.  I don't
see that as adding any value.  We can just document the reality of the
situation, which is only BTRFS works well as a graph driver with 14.04.

Regards
-steve

On 5/9/16, 10:48 AM, "Paul Belanger"  wrote:

>On Sun, May 08, 2016 at 09:55:58AM -0500, Monty Taylor wrote:
>> On 05/08/2016 03:45 AM, Steve Kowalik wrote:
>> >On 08/05/16 08:11, lương hữu tuấn wrote:
>> >>Hi,
>> >>
>> >>@Robert: I was successful to update the kernel without change the
>>image.
>> >
>> >But that was Robert's point entirely. Installing the kernel will work
>> >fine, but it does not get you running that kernel -- also like Robert
>> >said, you need to change the image to run a different kernel than what
>> >it has installed.
>> >
>> 
>> We will be changing our images this cycle to Xenial from Trusty. I do
>>not
>> believe we have any intention of installing backported wily kernels in
>>our
>> trusty images, as what we want to test on them is Trusty.
>> 
>> However, the Xenial transition should be happening soon enough - so
>>things
>> that need a newer kernel this release can happily just require Xenial
>>images
>> for testing.
>> 
>> I think the question of why/how kolla grew a dependency on a newer
>>kernel
>> than what trusty has is worth checking. As of right now, trusty kernels
>>are
>> the newest thing supported in the gate.
>> 
>++
>
>I'd like to bake in our current DIBs as long as possible before we
>consider
>changing kernels.
>> 
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Paul Belanger]

On Sun, May 08, 2016 at 09:55:58AM -0500, Monty Taylor wrote:
> On 05/08/2016 03:45 AM, Steve Kowalik wrote:
> >On 08/05/16 08:11, lương hữu tuấn wrote:
> >>Hi,
> >>
> >>@Robert: I was successful to update the kernel without change the image.
> >
> >But that was Robert's point entirely. Installing the kernel will work
> >fine, but it does not get you running that kernel -- also like Robert
> >said, you need to change the image to run a different kernel than what
> >it has installed.
> >
> 
> We will be changing our images this cycle to Xenial from Trusty. I do not
> believe we have any intention of installing backported wily kernels in our
> trusty images, as what we want to test on them is Trusty.
> 
> However, the Xenial transition should be happening soon enough - so things
> that need a newer kernel this release can happily just require Xenial images
> for testing.
> 
> I think the question of why/how kolla grew a dependency on a newer kernel
> than what trusty has is worth checking. As of right now, trusty kernels are
> the newest thing supported in the gate.
> 
++

I'd like to bake in our current DIBs as long as possible before we consider
changing kernels.
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Hui Kang]

FYI, I filed a bug about this issue
https://bugs.launchpad.net/kolla/+bug/1579583

- Hui

On Mon, May 9, 2016 at 10:42 AM, Steven Dake (stdake)  wrote:
>
>
> On 5/8/16, 7:55 AM, "Monty Taylor"  wrote:
>
>>On 05/08/2016 03:45 AM, Steve Kowalik wrote:
>>> On 08/05/16 08:11, lương hữu tuấn wrote:
 Hi,

 @Robert: I was successful to update the kernel without change the
image.
>>>
>>> But that was Robert's point entirely. Installing the kernel will work
>>> fine, but it does not get you running that kernel -- also like Robert
>>> said, you need to change the image to run a different kernel than what
>>> it has installed.
>>>
>>
>>We will be changing our images this cycle to Xenial from Trusty. I do
>>not believe we have any intention of installing backported wily kernels
>>in our trusty images, as what we want to test on them is Trusty.
>>
>>However, the Xenial transition should be happening soon enough - so
>>things that need a newer kernel this release can happily just require
>>Xenial images for testing.
>>
>>I think the question of why/how kolla grew a dependency on a newer
>>kernel than what trusty has is worth checking. As of right now, trusty
>>kernels are the newest thing supported in the gate.
>
> Monty,
>
> One of our dependencies, Docker, only works with the btrfs storage driver
> on Trusty.  All other storage drivers for Trusty are DOA on Trusty without
> kernel recompiles.  CentOS 7 works well with all storage drivers, although
> overlayfs is a little flakey when building images because of  the yum OVL
> plugin.  We recommend in the docs to upgrade the kernel to Willy howver
> Xenail should work as well.
>
> What comes out of this is a recommendation to use BTRFS as the storage
> backend when using Trusty.  We should be documenting that anyway.
>
> Regards
> -steve
>
>>
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[James Page]

On Sun, 8 May 2016 at 15:58 Monty Taylor  wrote:

> On 05/08/2016 03:45 AM, Steve Kowalik wrote:
> > On 08/05/16 08:11, lương hữu tuấn wrote:
> >> Hi,
> >>
> >> @Robert: I was successful to update the kernel without change the image.
> >
> > But that was Robert's point entirely. Installing the kernel will work
> > fine, but it does not get you running that kernel -- also like Robert
> > said, you need to change the image to run a different kernel than what
> > it has installed.
> >
>
> We will be changing our images this cycle to Xenial from Trusty. I do
> not believe we have any intention of installing backported wily kernels
> in our trusty images, as what we want to test on them is Trusty.
>
> However, the Xenial transition should be happening soon enough - so
> things that need a newer kernel this release can happily just require
> Xenial images for testing.
>
> I think the question of why/how kolla grew a dependency on a newer
> kernel than what trusty has is worth checking. As of right now, trusty
> kernels are the newest thing supported in the gate.
>

Probably worth noting that trusty does provide hardware enablement
(sometimes referred to as HWE) kernels from newer Ubuntu releases in
archive; however they are not used as the base for Ubuntu Cloud Images
(which just use the release kernel version for 14.04 which is 3.13) and
evidently the trusty images in gate.
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Steven Dake (stdake)]

On 5/8/16, 7:55 AM, "Monty Taylor"  wrote:

>On 05/08/2016 03:45 AM, Steve Kowalik wrote:
>> On 08/05/16 08:11, lương hữu tuấn wrote:
>>> Hi,
>>>
>>> @Robert: I was successful to update the kernel without change the
>>>image.
>>
>> But that was Robert's point entirely. Installing the kernel will work
>> fine, but it does not get you running that kernel -- also like Robert
>> said, you need to change the image to run a different kernel than what
>> it has installed.
>>
>
>We will be changing our images this cycle to Xenial from Trusty. I do
>not believe we have any intention of installing backported wily kernels
>in our trusty images, as what we want to test on them is Trusty.
>
>However, the Xenial transition should be happening soon enough - so
>things that need a newer kernel this release can happily just require
>Xenial images for testing.
>
>I think the question of why/how kolla grew a dependency on a newer
>kernel than what trusty has is worth checking. As of right now, trusty
>kernels are the newest thing supported in the gate.

Monty,

One of our dependencies, Docker, only works with the btrfs storage driver
on Trusty.  All other storage drivers for Trusty are DOA on Trusty without
kernel recompiles.  CentOS 7 works well with all storage drivers, although
overlayfs is a little flakey when building images because of  the yum OVL
plugin.  We recommend in the docs to upgrade the kernel to Willy howver
Xenail should work as well.

What comes out of this is a recommendation to use BTRFS as the storage
backend when using Trusty.  We should be documenting that anyway.

Regards
-steve

>
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Steven Dake (stdake)]

The reason Kolla works in the gate is it is using the btrfs graph driver.  The 
AUFS graph driver in the 14.04 kernel is busted.  This is what the precheck is 
meant to check.  Apparently it needs to also check the graph driver type in use.

Regards
-steve

From: Jeffrey Zhang <zhang.lei@gmail.com<mailto:zhang.lei@gmail.com>>
Reply-To: "OpenStack Development Mailing List (not for usage questions)" 
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Date: Sunday, May 8, 2016 at 1:57 AM
To: "OpenStack Development Mailing List (not for usage questions)" 
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Subject: Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum 
kernel version on ubuntu 14.04

Please check this[0]. The root cause is that the
> While all kernels should work for Docker, some older kernels may have
> issues with some of the different Docker backends such as AUFS and OverlayFS.

[0] 
http://docs.openstack.org/developer/kolla/quickstart.html#installing-dependencies

On Sun, May 8, 2016 at 4:45 PM, Steve Kowalik 
<ste...@wedontsleep.org<mailto:ste...@wedontsleep.org>> wrote:
On 08/05/16 08:11, lương hữu tuấn wrote:
Hi,

@Robert: I was successful to update the kernel without change the image.

But that was Robert's point entirely. Installing the kernel will work
fine, but it does not get you running that kernel -- also like Robert
said, you need to change the image to run a different kernel than what
it has installed.

--
Steve
"Stop breathing down my neck!"
"My breathing is merely a simulation."
"So is my neck! Stop it anyway."
 - EMH vs EMH, USS Prometheus


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Jeffrey Zhang
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Jeffrey Zhang]

​hi hui,​

On Mon, May 9, 2016 at 12:41 AM, Hui Kang  wrote:

> Then the precheck should check for backend overlay fs on Ubuntu
> trusty, rather than the kernel version.
>
​i do not have more info about this in pre-check. just copy from the doc.
Maybe
we need re-consider this. what's the root cause that we need upgrade the
kernel. normally, upgrade the trusty kernel is unacceptable.




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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Hui Kang]

On Sun, May 8, 2016 at 10:55 AM, Monty Taylor  wrote:
> On 05/08/2016 03:45 AM, Steve Kowalik wrote:
>>
>> On 08/05/16 08:11, lương hữu tuấn wrote:
>>>
>>> Hi,
>>>
>>> @Robert: I was successful to update the kernel without change the image.
>>
>>
>> But that was Robert's point entirely. Installing the kernel will work
>> fine, but it does not get you running that kernel -- also like Robert
>> said, you need to change the image to run a different kernel than what
>> it has installed.
>>
>
> We will be changing our images this cycle to Xenial from Trusty. I do not
> believe we have any intention of installing backported wily kernels in our
> trusty images, as what we want to test on them is Trusty.
>
> However, the Xenial transition should be happening soon enough - so things
> that need a newer kernel this release can happily just require Xenial images
> for testing.

Sounds great.

>
> I think the question of why/how kolla grew a dependency on a newer kernel
> than what trusty has is worth checking. As of right now, trusty kernels are
> the newest thing supported in the gate.

The dependency is on docker's backend fs. Please see my reply to
Jeffrey. Thanks.

- Hui

>
>
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Hui Kang]

Hi, Jeffrey,
Then the precheck should check for backend overlay fs on Ubuntu
trusty, rather than the kernel version.

In fact, the deploy gate job did success with kernel 3.13 [1]. The
existing checking for kernel 4.2 causes false alarm.

- Hui

[1] 
http://logs.openstack.org/06/313706/1/check/gate-kolla-dsvm-deploy-ubuntu-source/22c0d4d/console.html.gz#_2016-05-06_21_46_54_503

On Sun, May 8, 2016 at 4:57 AM, Jeffrey Zhang  wrote:
> Please check this[0]. The root cause is that the
>> While all kernels should work for Docker, some older kernels may have
>> issues with some of the different Docker backends such as AUFS and
>> OverlayFS.
>
> [0]
> http://docs.openstack.org/developer/kolla/quickstart.html#installing-dependencies
>
> On Sun, May 8, 2016 at 4:45 PM, Steve Kowalik 
> wrote:
>>
>> On 08/05/16 08:11, lương hữu tuấn wrote:
>>>
>>> Hi,
>>>
>>> @Robert: I was successful to update the kernel without change the image.
>>
>>
>> But that was Robert's point entirely. Installing the kernel will work
>> fine, but it does not get you running that kernel -- also like Robert
>> said, you need to change the image to run a different kernel than what
>> it has installed.
>>
>> --
>> Steve
>> "Stop breathing down my neck!"
>> "My breathing is merely a simulation."
>> "So is my neck! Stop it anyway."
>>  - EMH vs EMH, USS Prometheus
>>
>>
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>
>
>
> --
> Regards,
> Jeffrey Zhang
> Blog: http://xcodest.me
>
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Monty Taylor]

On 05/08/2016 03:45 AM, Steve Kowalik wrote:

On 08/05/16 08:11, lương hữu tuấn wrote:

Hi,

@Robert: I was successful to update the kernel without change the image.


But that was Robert's point entirely. Installing the kernel will work
fine, but it does not get you running that kernel -- also like Robert
said, you need to change the image to run a different kernel than what
it has installed.



We will be changing our images this cycle to Xenial from Trusty. I do 
not believe we have any intention of installing backported wily kernels 
in our trusty images, as what we want to test on them is Trusty.


However, the Xenial transition should be happening soon enough - so 
things that need a newer kernel this release can happily just require 
Xenial images for testing.


I think the question of why/how kolla grew a dependency on a newer 
kernel than what trusty has is worth checking. As of right now, trusty 
kernels are the newest thing supported in the gate.


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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[lương hữu tuấn]

Hi,

I got confused here. When a new version of kernel is installed and by
checking "uname -r", what i saw that the server is using wily. Why it is
not used in this case?

Thanks in advanced,

Tutj

On Sun, May 8, 2016 at 10:45 AM, Steve Kowalik 
wrote:

> On 08/05/16 08:11, lương hữu tuấn wrote:
>
>> Hi,
>>
>> @Robert: I was successful to update the kernel without change the image.
>>
>
> But that was Robert's point entirely. Installing the kernel will work
> fine, but it does not get you running that kernel -- also like Robert
> said, you need to change the image to run a different kernel than what
> it has installed.
>
> --
> Steve
> "Stop breathing down my neck!"
> "My breathing is merely a simulation."
> "So is my neck! Stop it anyway."
>  - EMH vs EMH, USS Prometheus
>
>
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Jeffrey Zhang]

Please check this[0]. The root cause is that the
> While all kernels should work for Docker, some older kernels may have
> issues with some of the different Docker backends such as AUFS and
OverlayFS.

[0]
http://docs.openstack.org/developer/kolla/quickstart.html#installing-dependencies

On Sun, May 8, 2016 at 4:45 PM, Steve Kowalik 
wrote:

> On 08/05/16 08:11, lương hữu tuấn wrote:
>
>> Hi,
>>
>> @Robert: I was successful to update the kernel without change the image.
>>
>
> But that was Robert's point entirely. Installing the kernel will work
> fine, but it does not get you running that kernel -- also like Robert
> said, you need to change the image to run a different kernel than what
> it has installed.
>
> --
> Steve
> "Stop breathing down my neck!"
> "My breathing is merely a simulation."
> "So is my neck! Stop it anyway."
>  - EMH vs EMH, USS Prometheus
>
>
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Steve Kowalik]

On 08/05/16 08:11, lương hữu tuấn wrote:

Hi,

@Robert: I was successful to update the kernel without change the image.


But that was Robert's point entirely. Installing the kernel will work
fine, but it does not get you running that kernel -- also like Robert
said, you need to change the image to run a different kernel than what
it has installed.

--
Steve
"Stop breathing down my neck!"
"My breathing is merely a simulation."
"So is my neck! Stop it anyway."
 - EMH vs EMH, USS Prometheus

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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[lương hữu tuấn]

Hi,

@Robert: I was successful to update the kernel without change the image.
It seems Kolla is quite unstable.

Tutj

On Sun, May 8, 2016 at 5:43 AM, Hui Kang  wrote:

> Robert,
> Thanks for you reply. Is there any way to change the VM image on the gate?
>
> BTW, I do see some kolla deploy gate job successes on kernel 3.13 [1].
> Is there any reason kolla needs to check 4.2 on ubuntu 14.04?
>
> - Hui
>
> [1]
> http://logs.openstack.org/38/313838/1/check/gate-kolla-dsvm-deploy-ubuntu-source/90ff270/console.html#_2016-05-07_12_42_12_253
>
> On Sat, May 7, 2016 at 11:14 PM, Robert Collins
>  wrote:
> > That won't get you running the new kernel; for that you need to change
> > the image itself.
> >
> > -Rob
> >
> >
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Hui Kang]

Robert,
Thanks for you reply. Is there any way to change the VM image on the gate?

BTW, I do see some kolla deploy gate job successes on kernel 3.13 [1].
Is there any reason kolla needs to check 4.2 on ubuntu 14.04?

- Hui

[1] 
http://logs.openstack.org/38/313838/1/check/gate-kolla-dsvm-deploy-ubuntu-source/90ff270/console.html#_2016-05-07_12_42_12_253

On Sat, May 7, 2016 at 11:14 PM, Robert Collins
 wrote:
> That won't get you running the new kernel; for that you need to change
> the image itself.
>
> -Rob
>
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Re: [openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Robert Collins]

That won't get you running the new kernel; for that you need to change
the image itself.

-Rob

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[openstack-dev] [kolla] Gate precheck job failed due to minimum kernel version on ubuntu 14.04

[Hui Kang]

Hi,
I see that the minimum kernel version required for ubuntu 14.04 is 4.2
[1]. The precheck job failed on gate because those ubuntu VMs have
kernel version 3.13.

Shall we add kernel upgrade command (i.e., apt-get install
linux-image-generic-lts-wily) in the precheck role?

- Hui

[1] 
http://docs.openstack.org/developer/kolla/quickstart.html#installing-dependencies
[2] 
http://logs.openstack.org/19/313819/1/check/gate-kolla-dsvm-deploy-ubuntu-source/f49ad57/console.html#_2016-05-08_02_31_50_295

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