[CentOS-virt] Errors with virt-manager

2015-11-02 Thread C.L. Martinez 

Hi all,

 When I try to connect to a remote KVM host from my CentOS workstation 
(both are CentOS 7.1 fully patched) using virt-manager (ssh+qemu), the 
following error is displayed:


Error launching connect dialogue: 
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name 
org.freedesktop.Avahi was not provided by any .service files


Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/engine.py", line 714, in 
_do_show_connect

self._get_connect_dialog().show(src.topwin, reset_state)
  File "/usr/share/virt-manager/virtManager/connect.py", line 143, in show
self.start_browse()
  File "/usr/share/virt-manager/virtManager/connect.py", line 273, in 
start_browse

service, domain, flags)
  File "/usr/lib64/python2.7/site-packages/gi/overrides/Gio.py", line 
171, in __call__

None)
GError: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name 
org.freedesktop.Avahi was not provided by any .service files



 Searching about this error, I have found this patch:

https://www.redhat.com/archives/virt-tools-list/2014-December/msg00165.html

 But applying this solution doesn't resolves the problem.

 Any idea why?
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Re: [CentOS-virt] Differences between qemu-kvm and qemu-kvm-ev

2015-11-02 Thread Sandro Bonazzola 
On Mon, Nov 2, 2015 at 8:55 AM, C.L. Martinez  wrote:

> On 10/27/2015 09:16 AM, Sandro Bonazzola wrote:
>
>>
>>
>> On Tue, Oct 27, 2015 at 10:01 AM, Nux! > > wrote:
>>
>> Sandro,
>>
>> Could you please enumerate the actual technical differences between
>> stock qemu-kvm and qemu-kvm-ev?
>> For example, what could one do with qemu-kvm-ev that cannot with
>> qemu-kvm?
>>
>>
>> Adding people that may give you a better answer than mine.
>>
>>
>>
> Any news about this??
>
>
>
I've talked with Paolo Bonzini, KVM maintainer, and eh just confirmed what
Nux already highlighted:

Live Snapshots
Live Storage Migration
Live Snapshot Merge
Block I/O Throttling
CEPH Enablement
OpenvSwitch

Paolo, feel free to add comments.



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Re: [CentOS-virt] Libvirt enhancement requests

2015-11-02 Thread Johnny Hughes 
On 10/31/2015 04:34 PM, Jean-Marc LIGER wrote:
> Hi Lucian,
> 
> It seems to be upstream libvirt-1.2.15-2 with options with_xen and
> with_libxl enabled.
> http://cbs.centos.org/koji/buildinfo?buildID=1348
>

Right, and we can use that version, or a newer one and enable rbd as well.

The next question is, is there a difference between the generic rbd and
building against ceph-devel.  (As in, is one ceph only and the other
generic only or can you use both when built against ceph-devel, etc)

Since qemu-kvm-ev enables ceph, if we can also enable ceph in libvirt,
seems like a win to me, if it also does rbd the same as building against
librados2-devel and librbd1-devel.

These may only work with CentOS 7 as well .. have to look at if those
build in CentOS 6.7.

Thoughts?

Thanks,
Johnny Hughes


> Regards,
> Jean-Marc
> 
> Le 28/10/2015 09:38, Nux! a écrit :
>> Pasi,
>>
>> Where are these RPMs, how are they built, what exactly are the
>> differences vs the stock ones?
>>
>> Regards,
>> Lucian
>>
>> -- 
>> Sent from the Delta quadrant using Borg technology!
>>
>> Nux!
>> www.nux.ro
>>
>> - Original Message -
>>> From: "Pasi Kärkkäinen" 
>>> To: "Discussion about the virtualization on CentOS"
>>> 
>>> Sent: Wednesday, 28 October, 2015 08:36:18
>>> Subject: Re: [CentOS-virt] Libvirt enhancement requests
>>> On Tue, Oct 27, 2015 at 05:19:16PM +, Nux! wrote:
 To clarify my own request:

 RBD (for CEPH) support is available in the version bundled in RHEL
 7.2 Beta, so
 we'll have it in CentOS 7.2 (or whatever will be the identifying
 number).

 The hooks seems just like a matter of creating files in the correct
 location.

 ..So, all is good in the world once again.

>>> Except the VirtSIG provides a different version/build of libvirt
>>> rpms, so we
>>> still need to enable RBD/Ceph support separately in VirtSIG provided
>>> version..
>>>
>>>
>>> -- Pasi
>>>
 Regards,
 Lucian

 -- 
 Sent from the Delta quadrant using Borg technology!

 Nux!
 www.nux.ro

 - Original Message -
> From: "Nux!" 
> To: "Discussion about the virtualization on CentOS"
> 
> Sent: Tuesday, 27 October, 2015 15:22:27
> Subject: Re: [CentOS-virt] Libvirt enhancement requests
> So... how exactly do we proceed?
>
> Anyone from the Virt SIG, please stand up?
>
> -- 
> Sent from the Delta quadrant using Borg technology!
>
> Nux!
> www.nux.ro
>
> - Original Message -
>> From: "Pasi Kärkkäinen" 
>> To: "Discussion about the virtualization on CentOS"
>> 
>> Sent: Sunday, 25 October, 2015 11:02:22
>> Subject: Re: [CentOS-virt] Libvirt enhancement requests
>> On Wed, Oct 21, 2015 at 05:44:20PM +0100, Nux! wrote:
>>> Hi folks,
>>>
>> Hi,
>>
>>> I know you're rebuilding livbirt for the SIG. Would it be
>>> possible to enable RBD
>>> support in it?
>>>
>> Yes, we should definitely enable RBD / Ceph support in libvirt!
>>
>>
>>
>>> I know quite a few cases (in the Cloudstack community) that
>>> switched to Ubuntu
>>> particularly because CEPH support was missing.
>>> The recommendation is to rebuild the rpms, but this is not a
>>> viable thing for
>>> everyone. E.g.
>>> http://blog.widodh.nl/2015/04/rebuilding-libvirt-under-centos-7-1-with-rbd-storage-pool-support/
>>>
>>>
>>> Another thing that I noticed on the CentOS ml recently is an
>>> alleged lack of
>>> hooks, https://www.libvirt.org/hooks.html
>>>
>>> And last but not least, where could I find the libvirt (s)rpms
>>> that the SIG
>>> produces?
>>>
>>> Lucian
>>>
>>
>> -- Pasi




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Re: [CentOS-virt] 3.18.21-16 upgrade, kernel panic, unable to mount root fs

2015-11-02 Thread PJ Welsh 
This caused me an overnight issue on a secondary Xen server. I'm glad to
not be the only one to have the issue :)
I'm even more glad someone spotted the issue quickly. Thank you!

pjwelsh

On Sun, Nov 1, 2015 at 4:27 PM, Karel Hendrych 
wrote:

> Indeed, a good catch. Module initramfs line was missing at 3.18.21 grub
> config.
>
> Thanks!
> --
> Karel
>
>
> On 1.11.2015 21:46, Sarah Newman wrote:
>
>> On 11/01/2015 12:07 PM, Karel Hendrych wrote:
>>
>>> Hi, just a heads-up: 3.18.21 didn't boot up on HP ML310e Gen8 v2, SATA
>>> drives in AHCI mode, / on software raid 1, no LVM. It ended up in kernel
>>> panic
>>> with unable to mount root fs. Attached. No difference in grub kernel/xen
>>> settings.
>>>
>>> I didn't investigate the things deeper so far. 4.4.3-3/3.18.17 is
>>> booting fine.
>>>
>>> Any similar experience?
>>>
>>
>> Check the module line for the initramfs is present in grub.conf. It's
>> gone missing in all our recent upgrades, but I wasn't sure if it was an
>> upstream
>> problem or our own.
>>
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Re: [CentOS-virt] Libvirt enhancement requests http://libvirt.org/sources/

2015-11-02 Thread Jean-Marc LIGER 


Le 02/11/2015 18:28, Johnny Hughes a écrit :

On 10/31/2015 04:34 PM, Jean-Marc LIGER wrote:

Hi Lucian,

It seems to be upstream libvirt-1.2.15-2 with options with_xen and
with_libxl enabled.
http://cbs.centos.org/koji/buildinfo?buildID=1348


Right, and we can use that version, or a newer one and enable rbd as well.


You might use this preview one :
http://people.redhat.com/~rjones/libguestfs-RHEL-7.2-preview/libvirt-1.2.17-3.el7.src.rpm

I personally rebuild libvirt from last official releases which enable 
ceph by default for el7 :

http://libvirt.org/sources/

My dogfooding tests still **can be found here :
https://copr.fedoraproject.org/coprs/jmliger/virt7-upstream/


The next question is, is there a difference between the generic rbd and
building against ceph-devel.  (As in, is one ceph only and the other
generic only or can you use both when built against ceph-devel, etc)

Since qemu-kvm-ev enables ceph, if we can also enable ceph in libvirt,
seems like a win to me, if it also does rbd the same as building against
librados2-devel and librbd1-devel.


Maybe I'm wrong but ceph-devel seems to have been replaced by librados2-devel 
and librbd1-devel in el7.


These may only work with CentOS 7 as well .. have to look at if those
build in CentOS 6.7.


Which ceph release forCentOS 6.7Hammer or Firefly ?
Jean-Marc Liger


Thoughts?

Thanks,
Johnny Hughes



Regards,
Jean-Marc

Le 28/10/2015 09:38, Nux! a écrit :

Pasi,

Where are these RPMs, how are they built, what exactly are the
differences vs the stock ones?

Regards,
Lucian

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

- Original Message -

From: "Pasi Kärkkäinen" 
To: "Discussion about the virtualization on CentOS"

Sent: Wednesday, 28 October, 2015 08:36:18
Subject: Re: [CentOS-virt] Libvirt enhancement requests
On Tue, Oct 27, 2015 at 05:19:16PM +, Nux! wrote:

To clarify my own request:

RBD (for CEPH) support is available in the version bundled in RHEL
7.2 Beta, so
we'll have it in CentOS 7.2 (or whatever will be the identifying
number).

The hooks seems just like a matter of creating files in the correct
location.

..So, all is good in the world once again.


Except the VirtSIG provides a different version/build of libvirt
rpms, so we
still need to enable RBD/Ceph support separately in VirtSIG provided
version..


-- Pasi


Regards,
Lucian

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

- Original Message -

From: "Nux!" 
To: "Discussion about the virtualization on CentOS"

Sent: Tuesday, 27 October, 2015 15:22:27
Subject: Re: [CentOS-virt] Libvirt enhancement requests
So... how exactly do we proceed?

Anyone from the Virt SIG, please stand up?

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

- Original Message -

From: "Pasi Kärkkäinen" 
To: "Discussion about the virtualization on CentOS"

Sent: Sunday, 25 October, 2015 11:02:22
Subject: Re: [CentOS-virt] Libvirt enhancement requests
On Wed, Oct 21, 2015 at 05:44:20PM +0100, Nux! wrote:

Hi folks,


Hi,


I know you're rebuilding livbirt for the SIG. Would it be
possible to enable RBD
support in it?


Yes, we should definitely enable RBD / Ceph support in libvirt!




I know quite a few cases (in the Cloudstack community) that
switched to Ubuntu
particularly because CEPH support was missing.
The recommendation is to rebuild the rpms, but this is not a
viable thing for
everyone. E.g.
http://blog.widodh.nl/2015/04/rebuilding-libvirt-under-centos-7-1-with-rbd-storage-pool-support/


Another thing that I noticed on the CentOS ml recently is an
alleged lack of
hooks, https://www.libvirt.org/hooks.html

And last but not least, where could I find the libvirt (s)rpms
that the SIG
produces?

Lucian


-- Pasi



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Re: [CentOS-virt] Libvirt enhancement requests

2015-11-02 Thread Jean-Marc LIGER 


Le 02/11/2015 18:28, Johnny Hughes a écrit :

On 10/31/2015 04:34 PM, Jean-Marc LIGER wrote:

Hi Lucian,

It seems to be upstream libvirt-1.2.15-2 with options with_xen and
with_libxl enabled.
http://cbs.centos.org/koji/buildinfo?buildID=1348


Right, and we can use that version, or a newer one and enable rbd as well.


You might use this preview one :
http://people.redhat.com/~rjones/libguestfs-RHEL-7.2-preview/libvirt-1.2.17-3.el7.src.rpm

I personally rebuild libvirt from last official releases which enable 
ceph by default for el7 :

http://libvirt.org/sources/

My dogfooding tests still **can be found here :
https://copr.fedoraproject.org/coprs/jmliger/virt7-upstream/


The next question is, is there a difference between the generic rbd and
building against ceph-devel.  (As in, is one ceph only and the other
generic only or can you use both when built against ceph-devel, etc)

Since qemu-kvm-ev enables ceph, if we can also enable ceph in libvirt,
seems like a win to me, if it also does rbd the same as building against
librados2-devel and librbd1-devel.


Maybe I'm wrong but ceph-devel seems to have been replaced by librados2-devel 
and librbd1-devel in el7.


These may only work with CentOS 7 as well .. have to look at if those
build in CentOS 6.7.


Which ceph release forCentOS 6.7Hammer or Firefly ?
Jean-Marc Liger


Thoughts?

Thanks,
Johnny Hughes



Regards,
Jean-Marc

Le 28/10/2015 09:38, Nux! a écrit :

Pasi,

Where are these RPMs, how are they built, what exactly are the
differences vs the stock ones?

Regards,
Lucian

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

- Original Message -

From: "Pasi Kärkkäinen"
To: "Discussion about the virtualization on CentOS"

Sent: Wednesday, 28 October, 2015 08:36:18
Subject: Re: [CentOS-virt] Libvirt enhancement requests
On Tue, Oct 27, 2015 at 05:19:16PM +, Nux! wrote:

To clarify my own request:

RBD (for CEPH) support is available in the version bundled in RHEL
7.2 Beta, so
we'll have it in CentOS 7.2 (or whatever will be the identifying
number).

The hooks seems just like a matter of creating files in the correct
location.

..So, all is good in the world once again.


Except the VirtSIG provides a different version/build of libvirt
rpms, so we
still need to enable RBD/Ceph support separately in VirtSIG provided
version..


-- Pasi


Regards,
Lucian

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

- Original Message -

From: "Nux!"
To: "Discussion about the virtualization on CentOS"

Sent: Tuesday, 27 October, 2015 15:22:27
Subject: Re: [CentOS-virt] Libvirt enhancement requests
So... how exactly do we proceed?

Anyone from the Virt SIG, please stand up?

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

- Original Message -

From: "Pasi Kärkkäinen"
To: "Discussion about the virtualization on CentOS"

Sent: Sunday, 25 October, 2015 11:02:22
Subject: Re: [CentOS-virt] Libvirt enhancement requests
On Wed, Oct 21, 2015 at 05:44:20PM +0100, Nux! wrote:

Hi folks,


Hi,


I know you're rebuilding livbirt for the SIG. Would it be
possible to enable RBD
support in it?


Yes, we should definitely enable RBD / Ceph support in libvirt!




I know quite a few cases (in the Cloudstack community) that
switched to Ubuntu
particularly because CEPH support was missing.
The recommendation is to rebuild the rpms, but this is not a
viable thing for
everyone. E.g.
http://blog.widodh.nl/2015/04/rebuilding-libvirt-under-centos-7-1-with-rbd-storage-pool-support/


Another thing that I noticed on the CentOS ml recently is an
alleged lack of
hooks,https://www.libvirt.org/hooks.html

And last but not least, where could I find the libvirt (s)rpms
that the SIG
produces?

Lucian


-- Pasi



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