Qemu fails to open RBD image when auth_supported is not set to 'none'

Qemu fails to open RBD image when auth_supported is not set to 'none'

[Wido den Hollander]

Hi,

I just tried to start a VM with libvirt with the following disk:

<disk type='network' device='disk'>
   <driver name='qemu' type='raw' cache='none'/>
   <source protocol='rbd' name='rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7'>
     <host name='31.25.XX.XX' port='6789'/>
   </source>
   <target dev='vda' bus='virtio'/>
</disk>

That fails with: "Operation not supported"

I tried qemu-img:

qemu-img info 
rbd:rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7:mon_host=31.25.XX.XX\\:6789

Same result.

I then tried:

qemu-img info 
rbd:rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7:mon_host=31.25.XX.XX\\:6789:auth_supported=none

And that worked :)

This host does not have a local ceph.conf, all the parameters have to 
come from the command line.

I know that recently auth_supported defaults to "cephx", but that now 
break the libvirt integration since it doesn't set auth_supported to 
explicitly none when no auth section is present.

Should this be something that gets fixed in librados or in libvirt?

If it's libvirt, I'll write a patch for it :)

Wido

Re: Qemu fails to open RBD image when auth_supported is not set to 'none'

[Wido den Hollander]

On 06/25/2012 05:20 PM, Wido den Hollander wrote:
> Hi,
>
> I just tried to start a VM with libvirt with the following disk:
>
> <disk type='network' device='disk'>
>    <driver name='qemu' type='raw' cache='none'/>
>    <source protocol='rbd' name='rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7'>
>      <host name='31.25.XX.XX' port='6789'/>
>    </source>
>    <target dev='vda' bus='virtio'/>
> </disk>
>
> That fails with: "Operation not supported"
>
> I tried qemu-img:
>
> qemu-img info
> rbd:rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7:mon_host=31.25.XX.XX\\:6789
>
> Same result.
>
> I then tried:
>
> qemu-img info
> rbd:rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7:mon_host=31.25.XX.XX\\:6789:auth_supported=none
>
>
> And that worked :)
>
> This host does not have a local ceph.conf, all the parameters have to
> come from the command line.
>
> I know that recently auth_supported defaults to "cephx", but that now
> break the libvirt integration since it doesn't set auth_supported to
> explicitly none when no auth section is present.
>
> Should this be something that gets fixed in librados or in libvirt?

Thought about it, this is something in libvirt :)

>
> If it's libvirt, I'll write a patch for it :)

Just did so, very simple patch: 
https://www.redhat.com/archives/libvir-list/2012-June/msg01119.html

Wido

>
> Wido
> --
> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: Qemu fails to open RBD image when auth_supported is not set to 'none'

[Wido den Hollander]

On 06/25/2012 05:45 PM, Wido den Hollander wrote:
> On 06/25/2012 05:20 PM, Wido den Hollander wrote:
>> Hi,
>>
>> I just tried to start a VM with libvirt with the following disk:
>>
>> <disk type='network' device='disk'>
>>    <driver name='qemu' type='raw' cache='none'/>
>>    <source protocol='rbd'
>> name='rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7'>
>>      <host name='31.25.XX.XX' port='6789'/>
>>    </source>
>>    <target dev='vda' bus='virtio'/>
>> </disk>
>>
>> That fails with: "Operation not supported"
>>
>> I tried qemu-img:
>>
>> qemu-img info
>> rbd:rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7:mon_host=31.25.XX.XX\\:6789
>>
>> Same result.
>>
>> I then tried:
>>
>> qemu-img info
>> rbd:rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7:mon_host=31.25.XX.XX\\:6789:auth_supported=none
>>
>>
>>
>> And that worked :)
>>
>> This host does not have a local ceph.conf, all the parameters have to
>> come from the command line.
>>
>> I know that recently auth_supported defaults to "cephx", but that now
>> break the libvirt integration since it doesn't set auth_supported to
>> explicitly none when no auth section is present.
>>
>> Should this be something that gets fixed in librados or in libvirt?
>
> Thought about it, this is something in libvirt :)
>
>>
>> If it's libvirt, I'll write a patch for it :)
>
> Just did so, very simple patch:
> https://www.redhat.com/archives/libvir-list/2012-June/msg01119.html

libvirt 0.9.13 just got out. The good news is that the RBD storage pool 
is in this release, but the patch above did not make it in time.

We'll have to wait for 0.9.14 to get that one in.

>
> Wido
>
>>
>> Wido
>> --
>> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
> the body of a message to majordomo@vger.kernel.org
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Re: Qemu fails to open RBD image when auth_supported is not set to 'none'

[Wido den Hollander]

On 02-07-12 21:21, Wido den Hollander wrote:
>
>
> On 06/25/2012 05:45 PM, Wido den Hollander wrote:
>> On 06/25/2012 05:20 PM, Wido den Hollander wrote:
>>> Hi,
>>>
>>> I just tried to start a VM with libvirt with the following disk:
>>>
>>> <disk type='network' device='disk'>
>>>    <driver name='qemu' type='raw' cache='none'/>
>>>    <source protocol='rbd'
>>> name='rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7'>
>>>      <host name='31.25.XX.XX' port='6789'/>
>>>    </source>
>>>    <target dev='vda' bus='virtio'/>
>>> </disk>
>>>
>>> That fails with: "Operation not supported"
>>>
>>> I tried qemu-img:
>>>
>>> qemu-img info
>>> rbd:rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7:mon_host=31.25.XX.XX\\:6789
>>>
>>> Same result.
>>>
>>> I then tried:
>>>
>>> qemu-img info
>>> rbd:rbd/8489c04f-aab8-4796-a22a-ebaa7be247a7:mon_host=31.25.XX.XX\\:6789:auth_supported=none
>>>
>>>
>>>
>>>
>>> And that worked :)
>>>
>>> This host does not have a local ceph.conf, all the parameters have to
>>> come from the command line.
>>>
>>> I know that recently auth_supported defaults to "cephx", but that now
>>> break the libvirt integration since it doesn't set auth_supported to
>>> explicitly none when no auth section is present.
>>>
>>> Should this be something that gets fixed in librados or in libvirt?
>>
>> Thought about it, this is something in libvirt :)
>>
>>>
>>> If it's libvirt, I'll write a patch for it :)
>>
>> Just did so, very simple patch:
>> https://www.redhat.com/archives/libvir-list/2012-June/msg01119.html
>
> libvirt 0.9.13 just got out. The good news is that the RBD storage pool
> is in this release, but the patch above did not make it in time.

The patch just made it into libvirt: 
http://libvirt.org/git/?p=libvirt.git;a=commit;h=ccb94785007d33365d49dd566e194eb0a022148d

You will need this libvirt patch if you are going to run RBD without 
cephx enabled

Wido

>
> We'll have to wait for 0.9.14 to get that one in.
>
>>
>> Wido
>>
>>>
>>> Wido
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
> --
> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html