Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Jeffrey Zhang]

On Tue, Jan 3, 2017 at 6:23 AM, Clark Boylan  wrote:

> I don't have any answers but my first thought was maybe it is related to
> https://bugs.launchpad.net/nova/+bug/1643911; however, that affects
> libvirt 1.3.1 on Ubuntu Xenial and there is at least one instance of
> that occurring on a non Xen hypervisor so maybe they are not related.
>
​seems it is not related.​

>
> Also noticed that you appear to have two redundant sets of system logs
> in the Kolla centos job(s). See
> http://logs.openstack.org/80/415880/1/check/gate-kolla-
> dsvm-deploy-centos-binary-centos-7-nv/d94c349/logs/system_log/
> and
> http://logs.openstack.org/80/415880/1/check/gate-kolla-
> dsvm-deploy-centos-binary-centos-7-nv/d94c349/logs/system_logs/.
>

​yep. this is issue after split the kolla project into kolla-ansible and
kolla. will fix it later.​

>
> As for debugging this you may be able to install libvirt's debugging
> symbols
> (http://debuginfo.centos.org/7/x86_64/libvirt-debuginfo-2.
> 0.0-10.el7.x86_64.rpm),
> capture a core dump, load into gdb and go from there.
>
​I will try to install it and get more information.​




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Jeffrey Zhang
Blog: http://xcodest.me
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Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Steven Dake (stdake)]

I think optimally we should check if we are running in rax-iad, and if so, set 
libvirt virtualization to qemu.  I was pretty sure the gate script that sets up 
the system sets the libvirt type to qemu.  After inspection of the gate 
scripts, this is not the case.  Perhaps it was setup this way previously and 
someone changed it.

This explains why rax gates have been so flakey for a very long time when 
running the deploy jobs.

Regards,
-steve


From: Michał Jastrzębski <inc...@gmail.com>
Reply-To: "OpenStack Development Mailing List (not for usage questions)" 
<openstack-dev@lists.openstack.org>
Date: Monday, January 2, 2017 at 3:37 PM
To: "OpenStack Development Mailing List (not for usage questions)" 
<openstack-dev@lists.openstack.org>
Subject: Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during 
launching qemu progress

XEN doesn't work well with nested kvm. We need to change nova config to pure 
qemu without kvm. I thought we did that in gates?

On Jan 2, 2017 2:25 PM, "Clark Boylan" 
<cboy...@sapwetik.org<mailto:cboy...@sapwetik.org>> wrote:
On Sun, Jan 1, 2017, at 09:13 PM, Jeffrey Zhang wrote:
> Checked more failed gate, here is the more info:
>
> 1. only rax-iad has such issue
> 2. the failed and successful gates have the same rpm installed.
>
> So the only difference between failed gate and successful gate is the xen
> hypervisor.

I don't have any answers but my first thought was maybe it is related to
https://bugs.launchpad.net/nova/+bug/1643911; however, that affects
libvirt 1.3.1 on Ubuntu Xenial and there is at least one instance of
that occurring on a non Xen hypervisor so maybe they are not related.

Also noticed that you appear to have two redundant sets of system logs
in the Kolla centos job(s). See
http://logs.openstack.org/80/415880/1/check/gate-kolla-dsvm-deploy-centos-binary-centos-7-nv/d94c349/logs/system_log/
and
http://logs.openstack.org/80/415880/1/check/gate-kolla-dsvm-deploy-centos-binary-centos-7-nv/d94c349/logs/system_logs/.

As for debugging this you may be able to install libvirt's debugging
symbols
(http://debuginfo.centos.org/7/x86_64/libvirt-debuginfo-2.0.0-10.el7.x86_64.rpm),
capture a core dump, load into gdb and go from there.

Clark

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Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Jeffrey Zhang]

On Tue, Jan 3, 2017 at 6:37 AM, Michał Jastrzębski  wrote:

> XEN doesn't work well with nested kvm. We need to change nova config to
> pure qemu without kvm. I thought we did that in gates?


​In the gate, kolla is using qemu all the time[0]. So this should be not
related.

[0]
http://logs.openstack.org/80/415880/1/check/gate-kolla-dsvm-deploy-centos-binary-centos-7-nv/d94c349/logs/kolla_configs/nova-compute/nova.conf.txt.gz
 ​



-- 
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Jeffrey Zhang
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Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Michał Jastrzębski]

XEN doesn't work well with nested kvm. We need to change nova config to
pure qemu without kvm. I thought we did that in gates?

On Jan 2, 2017 2:25 PM, "Clark Boylan"  wrote:

> On Sun, Jan 1, 2017, at 09:13 PM, Jeffrey Zhang wrote:
> > Checked more failed gate, here is the more info:
> >
> > 1. only rax-iad has such issue
> > 2. the failed and successful gates have the same rpm installed.
> >
> > So the only difference between failed gate and successful gate is the xen
> > hypervisor.
>
> I don't have any answers but my first thought was maybe it is related to
> https://bugs.launchpad.net/nova/+bug/1643911; however, that affects
> libvirt 1.3.1 on Ubuntu Xenial and there is at least one instance of
> that occurring on a non Xen hypervisor so maybe they are not related.
>
> Also noticed that you appear to have two redundant sets of system logs
> in the Kolla centos job(s). See
> http://logs.openstack.org/80/415880/1/check/gate-kolla-
> dsvm-deploy-centos-binary-centos-7-nv/d94c349/logs/system_log/
> and
> http://logs.openstack.org/80/415880/1/check/gate-kolla-
> dsvm-deploy-centos-binary-centos-7-nv/d94c349/logs/system_logs/.
>
> As for debugging this you may be able to install libvirt's debugging
> symbols
> (http://debuginfo.centos.org/7/x86_64/libvirt-debuginfo-2.
> 0.0-10.el7.x86_64.rpm),
> capture a core dump, load into gdb and go from there.
>
> Clark
>
> __
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> Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe
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Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Clark Boylan]

On Sun, Jan 1, 2017, at 09:13 PM, Jeffrey Zhang wrote:
> Checked more failed gate, here is the more info:
> 
> 1. only rax-iad has such issue
> 2. the failed and successful gates have the same rpm installed.
> 
> So the only difference between failed gate and successful gate is the xen
> hypervisor.

I don't have any answers but my first thought was maybe it is related to
https://bugs.launchpad.net/nova/+bug/1643911; however, that affects
libvirt 1.3.1 on Ubuntu Xenial and there is at least one instance of
that occurring on a non Xen hypervisor so maybe they are not related.

Also noticed that you appear to have two redundant sets of system logs
in the Kolla centos job(s). See
http://logs.openstack.org/80/415880/1/check/gate-kolla-dsvm-deploy-centos-binary-centos-7-nv/d94c349/logs/system_log/
and
http://logs.openstack.org/80/415880/1/check/gate-kolla-dsvm-deploy-centos-binary-centos-7-nv/d94c349/logs/system_logs/.

As for debugging this you may be able to install libvirt's debugging
symbols
(http://debuginfo.centos.org/7/x86_64/libvirt-debuginfo-2.0.0-10.el7.x86_64.rpm),
capture a core dump, load into gdb and go from there.

Clark

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Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Jeffrey Zhang]

Checked more failed gate, here is the more info:

1. only rax-iad has such issue
2. the failed and successful gates have the same rpm installed.

So the only difference between failed gate and successful gate is the xen
hypervisor.

On Sun, Jan 1, 2017 at 6:33 AM, Steven Dake (stdake) <std...@cisco.com>
wrote:

> Jeffrey,
>
>
>
> rax-iad uses xen as a base virtualization layer iiuc.  Perhaps kvm on xen
> is not a technical feature rax-iad supports or perhaps libvirt was modified
> and now fails with xen?  Whatever the case is, rax-iad has been a
> semi-constant source of hassle with Kolla’s gate jobs; I think partly
> because Kolla’s gate scripts need to special-case rax-iad in some way.
>
>
>
> Just one of many possibilities.
>
>
>
> Happy new year J
>
>
>
> Regards
>
> -steve
>
>
>
>
>
> *From: *Jeffrey Zhang <zhang.lei@gmail.com>
> *Reply-To: *"OpenStack Development Mailing List (not for usage
> questions)" <openstack-dev@lists.openstack.org>
> *Date: *Saturday, December 31, 2016 at 6:22 AM
> *To: *"OpenStack Development Mailing List (not for usage questions)" <
> openstack-dev@lists.openstack.org>
> *Subject: *Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed
> during launching qemu progress
>
>
>
> I checked more than ten error gates, all of them happened in rax-iad.
>
>
>
> On Sat, Dec 31, 2016 at 12:06 PM, Steven Dake (stdake) <std...@cisco.com>
> wrote:
>
> Jeffrey,
>
>
>
> Have you detected any pattern to any specific cloud provider in the logs?
>
>
>
> Regards
>
> -steve
>
>
>
>
>
> *From: *Jeffrey Zhang <zhang.lei@gmail.com>
> *Reply-To: *"OpenStack Development Mailing List (not for usage
> questions)" <openstack-dev@lists.openstack.org>
> *Date: *Friday, December 30, 2016 at 12:41 AM
> *To: *OpenStack Development Mailing List <openstack-dev@lists.
> openstack.org>
> *Subject: *Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed
> during launching qemu progress
>
>
>
> Found this nova bug[0] and another talk in openstack-dev[1].
>
>
>
> The question is: why this happens now and then? sometimes the gate is OK.
> and others not.
>
>
>
> [0] https://bugs.launchpad.net/nova/+bug/1649527
>
> [1] http://lists.openstack.org/pipermail/openstack-dev/
> 2016-December/109401.html
>
>
>
> On Fri, Dec 30, 2016 at 3:33 PM, Jeffrey Zhang <zhang.lei@gmail.com>
> wrote:
>
> Recently, centos 7.3 is release. libvirt is upgrade to 2.0 version.
>
>
>
> But in kolla's gate. the nova_libvirt container failed now and then.
>
>
>
> What i found is:
>
>
>
> 1. Simple start nova_libvirt container is OK.
>
> 2. When launching a new instance, libvirt is killed without any logs in
> libvirtd.log file.
>
> 3. in system messages log, i found following line.
>
> Dec 29 00:41:24 localhost kernel: libvirtd[24340]: segfault at 8 ip 
> 7f9fee072823 sp 7f9fe52dd1c0 error 4 in 
> libvirt.so.0.2000.0[7f9fedf1f000+353000]
>
> No idea why and how this happen. Any idea on this?
>
>
>
> --
>
> Regards,
>
> Jeffrey Zhang
>
> Blog: http://xcodest.me
>
>
>
>
>
> --
>
> Regards,
>
> Jeffrey Zhang
>
> Blog: http://xcodest.me
>
>
> __
> OpenStack Development Mailing List (not for usage questions)
> Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe
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>
>
>
>
>
> --
>
> Regards,
>
> Jeffrey Zhang
>
> Blog: http://xcodest.me
>
>
> __
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>


-- 
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Jeffrey Zhang
Blog: http://xcodest.me
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Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Steven Dake (stdake)]

Jeffrey,

rax-iad uses xen as a base virtualization layer iiuc.  Perhaps kvm on xen is 
not a technical feature rax-iad supports or perhaps libvirt was modified and 
now fails with xen?  Whatever the case is, rax-iad has been a semi-constant 
source of hassle with Kolla’s gate jobs; I think partly because Kolla’s gate 
scripts need to special-case rax-iad in some way.

Just one of many possibilities.

Happy new year ☺

Regards
-steve


From: Jeffrey Zhang <zhang.lei@gmail.com>
Reply-To: "OpenStack Development Mailing List (not for usage questions)" 
<openstack-dev@lists.openstack.org>
Date: Saturday, December 31, 2016 at 6:22 AM
To: "OpenStack Development Mailing List (not for usage questions)" 
<openstack-dev@lists.openstack.org>
Subject: Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during 
launching qemu progress

I checked more than ten error gates, all of them happened in rax-iad.

On Sat, Dec 31, 2016 at 12:06 PM, Steven Dake (stdake) 
<std...@cisco.com<mailto:std...@cisco.com>> wrote:
Jeffrey,

Have you detected any pattern to any specific cloud provider in the logs?

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: Friday, December 30, 2016 at 12:41 AM
To: OpenStack Development Mailing List 
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Subject: Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during 
launching qemu progress

Found this nova bug[0] and another talk in openstack-dev[1].

The question is: why this happens now and then? sometimes the gate is OK. and 
others not.

[0] https://bugs.launchpad.net/nova/+bug/1649527
[1] http://lists.openstack.org/pipermail/openstack-dev/2016-December/109401.html

On Fri, Dec 30, 2016 at 3:33 PM, Jeffrey Zhang 
<zhang.lei@gmail.com<mailto:zhang.lei@gmail.com>> wrote:
Recently, centos 7.3 is release. libvirt is upgrade to 2.0 version.

But in kolla's gate. the nova_libvirt container failed now and then.

What i found is:

1. Simple start nova_libvirt container is OK.
2. When launching a new instance, libvirt is killed without any logs in 
libvirtd.log file.
3. in system messages log, i found following line.

Dec 29 00:41:24 localhost kernel: libvirtd[24340]: segfault at 8 ip 
7f9fee072823 sp 7f9fe52dd1c0 error 4 in 
libvirt.so.0.2000.0[7f9fedf1f000+353000]

No idea why and how this happen. Any idea on this?

--
Regards,
Jeffrey Zhang
Blog: http://xcodest.me<http://xcodest.me/>



--
Regards,
Jeffrey Zhang
Blog: http://xcodest.me<http://xcodest.me/>

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Jeffrey Zhang
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Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Jeffrey Zhang]

I checked more than ten error gates, all of them happened in rax-iad.

On Sat, Dec 31, 2016 at 12:06 PM, Steven Dake (stdake) <std...@cisco.com>
wrote:

> Jeffrey,
>
>
>
> Have you detected any pattern to any specific cloud provider in the logs?
>
>
>
> Regards
>
> -steve
>
>
>
>
>
> *From: *Jeffrey Zhang <zhang.lei@gmail.com>
> *Reply-To: *"OpenStack Development Mailing List (not for usage
> questions)" <openstack-dev@lists.openstack.org>
> *Date: *Friday, December 30, 2016 at 12:41 AM
> *To: *OpenStack Development Mailing List <openstack-dev@lists.
> openstack.org>
> *Subject: *Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed
> during launching qemu progress
>
>
>
> Found this nova bug[0] and another talk in openstack-dev[1].
>
>
>
> The question is: why this happens now and then? sometimes the gate is OK.
> and others not.
>
>
>
> [0] https://bugs.launchpad.net/nova/+bug/1649527
>
> [1] http://lists.openstack.org/pipermail/openstack-dev/
> 2016-December/109401.html
>
>
>
> On Fri, Dec 30, 2016 at 3:33 PM, Jeffrey Zhang <zhang.lei@gmail.com>
> wrote:
>
> Recently, centos 7.3 is release. libvirt is upgrade to 2.0 version.
>
>
>
> But in kolla's gate. the nova_libvirt container failed now and then.
>
>
>
> What i found is:
>
>
>
> 1. Simple start nova_libvirt container is OK.
>
> 2. When launching a new instance, libvirt is killed without any logs in
> libvirtd.log file.
>
> 3. in system messages log, i found following line.
>
> Dec 29 00:41:24 localhost kernel: libvirtd[24340]: segfault at 8 ip 
> 7f9fee072823 sp 7f9fe52dd1c0 error 4 in 
> libvirt.so.0.2000.0[7f9fedf1f000+353000]
>
> No idea why and how this happen. Any idea on this?
>
>
>
> --
>
> Regards,
>
> Jeffrey Zhang
>
> Blog: http://xcodest.me
>
>
>
>
>
> --
>
> Regards,
>
> Jeffrey Zhang
>
> Blog: http://xcodest.me
>
>
> __
> OpenStack Development Mailing List (not for usage questions)
> Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>
>


-- 
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Jeffrey Zhang
Blog: http://xcodest.me
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Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Steven Dake (stdake)]

Jeffrey,

Have you detected any pattern to any specific cloud provider in the logs?

Regards
-steve


From: Jeffrey Zhang <zhang.lei@gmail.com>
Reply-To: "OpenStack Development Mailing List (not for usage questions)" 
<openstack-dev@lists.openstack.org>
Date: Friday, December 30, 2016 at 12:41 AM
To: OpenStack Development Mailing List <openstack-dev@lists.openstack.org>
Subject: Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during 
launching qemu progress

Found this nova bug[0] and another talk in openstack-dev[1].

The question is: why this happens now and then? sometimes the gate is OK. and 
others not.

[0] https://bugs.launchpad.net/nova/+bug/1649527
[1] http://lists.openstack.org/pipermail/openstack-dev/2016-December/109401.html

On Fri, Dec 30, 2016 at 3:33 PM, Jeffrey Zhang 
<zhang.lei@gmail.com<mailto:zhang.lei@gmail.com>> wrote:
Recently, centos 7.3 is release. libvirt is upgrade to 2.0 version.

But in kolla's gate. the nova_libvirt container failed now and then.

What i found is:

1. Simple start nova_libvirt container is OK.
2. When launching a new instance, libvirt is killed without any logs in 
libvirtd.log file.
3. in system messages log, i found following line.

Dec 29 00:41:24 localhost kernel: libvirtd[24340]: segfault at 8 ip 
7f9fee072823 sp 7f9fe52dd1c0 error 4 in 
libvirt.so.0.2000.0[7f9fedf1f000+353000]

No idea why and how this happen. Any idea on this?

--
Regards,
Jeffrey Zhang
Blog: http://xcodest.me<http://xcodest.me/>



--
Regards,
Jeffrey Zhang
Blog: http://xcodest.me<http://xcodest.me/>
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Re: [openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Jeffrey Zhang]

Found this nova bug[0] and another talk in openstack-dev[1].

The question is: why this happens now and then? sometimes the gate is OK.
and others not.

[0] https://bugs.launchpad.net/nova/+bug/1649527
[1]
http://lists.openstack.org/pipermail/openstack-dev/2016-December/109401.html

On Fri, Dec 30, 2016 at 3:33 PM, Jeffrey Zhang 
wrote:

> Recently, centos 7.3 is release. libvirt is upgrade to 2.0 version.
>
> But in kolla's gate. the nova_libvirt container failed now and then.
>
> What i found is:
>
> 1. Simple start nova_libvirt container is OK.
> 2. When launching a new instance, libvirt is killed without any logs in
> libvirtd.log file.
> 3. in system messages log, i found following line.
>
> Dec 29 00:41:24 localhost kernel: libvirtd[24340]: segfault at 8 ip 
> 7f9fee072823 sp 7f9fe52dd1c0 error 4 in 
> libvirt.so.0.2000.0[7f9fedf1f000+353000]
>
> No idea why and how this happen. Any idea on this?
>
>
> --
> Regards,
> Jeffrey Zhang
> Blog: http://xcodest.me
>



-- 
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Jeffrey Zhang
Blog: http://xcodest.me
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[openstack-dev] [kolla][rdo] libvirt 2.0 process is failed during launching qemu progress

[Jeffrey Zhang]

Recently, centos 7.3 is release. libvirt is upgrade to 2.0 version.

But in kolla's gate. the nova_libvirt container failed now and then.

What i found is:

1. Simple start nova_libvirt container is OK.
2. When launching a new instance, libvirt is killed without any logs in
libvirtd.log file.
3. in system messages log, i found following line.

Dec 29 00:41:24 localhost kernel: libvirtd[24340]: segfault at 8 ip
7f9fee072823 sp 7f9fe52dd1c0 error 4 in
libvirt.so.0.2000.0[7f9fedf1f000+353000]

No idea why and how this happen. Any idea on this?


-- 
Regards,
Jeffrey Zhang
Blog: http://xcodest.me
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