qemu needs target kernel sets CONFIG_SCSI_VIRTIO=y to boot vmdk qcow2 and vdi

qemu needs target kernel sets CONFIG_SCSI_VIRTIO=y to boot vmdk qcow2 and vdi

[Robert Yang]

Hi Bruce and Darren,

We need enable target kernel's CONFIG_SCSI_VIRTIO=y to make native qemu
can boot hdddirect, vmdk, qcow2 and vdi, otherwise, the scsi drive can't
work in qemu since our vm image's root default to /dev/sda2, or we can
change it default to /dev/hda2, then we don't have to make any changes
on kernel, but I prefer scsi since ide is going to be out of date.

I've tried to enable it by menuconfig, it works well, would you please
enable it by default ?


$ diff .config.old .config -Nur
--- .config.old 2016-02-25 01:04:25.816381913 -0800
+++ .config     2016-02-25 01:16:31.332232759 -0800
@@ -1479,7 +1479,7 @@
  # CONFIG_SCSI_DEBUG is not set
  # CONFIG_SCSI_PMCRAID is not set
  # CONFIG_SCSI_PM8001 is not set
-# CONFIG_SCSI_VIRTIO is not set
+CONFIG_SCSI_VIRTIO=y
  # CONFIG_SCSI_DH is not set
  # CONFIG_SCSI_OSD_INITIATOR is not set
  CONFIG_ATA=y

$ du bzImage bzImage_new
6752    bzImage
6756    bzImage_new

It nearly has no impact on the size.

-- 
Thanks

Robert

Re: qemu needs target kernel sets CONFIG_SCSI_VIRTIO=y to boot vmdk qcow2 and vdi

[Burton, Ross]

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On 25 February 2016 at 10:36, Robert Yang <liezhi.yang@windriver.com> wrote:

> We need enable target kernel's CONFIG_SCSI_VIRTIO=y to make native qemu
> can boot hdddirect, vmdk, qcow2 and vdi, otherwise, the scsi drive can't
> work in qemu since our vm image's root default to /dev/sda2, or we can
> change it default to /dev/hda2, then we don't have to make any changes
> on kernel, but I prefer scsi since ide is going to be out of date.
>

Are there any other virtio drivers that we really should be enabling in the
qemu kernels?

Ross

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Re: qemu needs target kernel sets CONFIG_SCSI_VIRTIO=y to boot vmdk qcow2 and vdi

[Bruce Ashfield]

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On Thu, Feb 25, 2016 at 7:10 AM, Burton, Ross <ross.burton@intel.com> wrote:

>
> On 25 February 2016 at 10:36, Robert Yang <liezhi.yang@windriver.com>
> wrote:
>
>> We need enable target kernel's CONFIG_SCSI_VIRTIO=y to make native qemu
>> can boot hdddirect, vmdk, qcow2 and vdi, otherwise, the scsi drive can't
>> work in qemu since our vm image's root default to /dev/sda2, or we can
>> change it default to /dev/hda2, then we don't have to make any changes
>> on kernel, but I prefer scsi since ide is going to be out of date.
>>
>
> Are there any other virtio drivers that we really should be enabling in
> the qemu kernels?
>

We already have a fragment for this, and a set of virtio drivers enabled ..
which
is why I find this entire thread confusing :)

Bruce


>
> Ross
>
> --
> _______________________________________________
> Openembedded-core mailing list
> Openembedded-core@lists.openembedded.org
> http://lists.openembedded.org/mailman/listinfo/openembedded-core
>
>


-- 
"Thou shalt not follow the NULL pointer, for chaos and madness await thee
at its end"

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Re: qemu needs target kernel sets CONFIG_SCSI_VIRTIO=y to boot vmdk qcow2 and vdi

[Robert Yang]

On 02/25/2016 08:42 PM, Bruce Ashfield wrote:
>
>
> On Thu, Feb 25, 2016 at 7:10 AM, Burton, Ross <ross.burton@intel.com
> <mailto:ross.burton@intel.com>> wrote:
>
>
>     On 25 February 2016 at 10:36, Robert Yang <liezhi.yang@windriver.com
>     <mailto:liezhi.yang@windriver.com>> wrote:
>
>         We need enable target kernel's CONFIG_SCSI_VIRTIO=y to make native qemu
>         can boot hdddirect, vmdk, qcow2 and vdi, otherwise, the scsi drive can't
>         work in qemu since our vm image's root default to /dev/sda2, or we can
>         change it default to /dev/hda2, then we don't have to make any changes
>         on kernel, but I prefer scsi since ide is going to be out of date.
>
>
>     Are there any other virtio drivers that we really should be enabling in the
>     qemu kernels?
>
>
> We already have a fragment for this, and a set of virtio drivers enabled .. which

Yes, others are fine AFAIK.

// Robert

> is why I find this entire thread confusing :)
>
> Bruce
>
>
>     Ross
>
>     --
>     _______________________________________________
>     Openembedded-core mailing list
>     Openembedded-core@lists.openembedded.org
>     <mailto:Openembedded-core@lists.openembedded.org>
>     http://lists.openembedded.org/mailman/listinfo/openembedded-core
>
>
>
>
> --
> "Thou shalt not follow the NULL pointer, for chaos and madness await thee at its
> end"

Re: qemu needs target kernel sets CONFIG_SCSI_VIRTIO=y to boot vmdk qcow2 and vdi

[Bruce Ashfield]

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On Thu, Feb 25, 2016 at 5:36 AM, Robert Yang <liezhi.yang@windriver.com>
wrote:

> Hi Bruce and Darren,
>
> We need enable target kernel's CONFIG_SCSI_VIRTIO=y to make native qemu
> can boot hdddirect, vmdk, qcow2 and vdi, otherwise, the scsi drive can't
> work in qemu since our vm image's root default to /dev/sda2, or we can
> change it default to /dev/hda2, then we don't have to make any changes
> on kernel, but I prefer scsi since ide is going to be out of date.
>

The IDE fragment was on for compatibility reasons, but we dropped that
compatibility about a year ago. I was under the impression that we had
fully dropped all the IDE fragments.


>
> I've tried to enable it by menuconfig, it works well, would you please
> enable it by default ?
>


Send a patch to the linux-yocto mailing list to change the virtio
configuration
fragment.

You are already set up to test it out, so it is much easier.

I don't see why this shouldn't follow the normal patch flow for
configuration
frag changes.

Cheers,

Bruce


>
>
> $ diff .config.old .config -Nur
> --- .config.old 2016-02-25 01:04:25.816381913 -0800
> +++ .config     2016-02-25 01:16:31.332232759 -0800
> @@ -1479,7 +1479,7 @@
>  # CONFIG_SCSI_DEBUG is not set
>  # CONFIG_SCSI_PMCRAID is not set
>  # CONFIG_SCSI_PM8001 is not set
> -# CONFIG_SCSI_VIRTIO is not set
> +CONFIG_SCSI_VIRTIO=y
>  # CONFIG_SCSI_DH is not set
>  # CONFIG_SCSI_OSD_INITIATOR is not set
>  CONFIG_ATA=y
>
> $ du bzImage bzImage_new
> 6752    bzImage
> 6756    bzImage_new
>
> It nearly has no impact on the size.
>
> --
> Thanks
>
> Robert
> --
> _______________________________________________
> Openembedded-core mailing list
> Openembedded-core@lists.openembedded.org
> http://lists.openembedded.org/mailman/listinfo/openembedded-core
>



-- 
"Thou shalt not follow the NULL pointer, for chaos and madness await thee
at its end"

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Re: qemu needs target kernel sets CONFIG_SCSI_VIRTIO=y to boot vmdk qcow2 and vdi

[Bruce Ashfield]

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On Thu, Feb 25, 2016 at 7:42 AM, Bruce Ashfield <bruce.ashfield@gmail.com>
wrote:

>
>
> On Thu, Feb 25, 2016 at 5:36 AM, Robert Yang <liezhi.yang@windriver.com>
> wrote:
>
>> Hi Bruce and Darren,
>>
>> We need enable target kernel's CONFIG_SCSI_VIRTIO=y to make native qemu
>> can boot hdddirect, vmdk, qcow2 and vdi, otherwise, the scsi drive can't
>> work in qemu since our vm image's root default to /dev/sda2, or we can
>> change it default to /dev/hda2, then we don't have to make any changes
>> on kernel, but I prefer scsi since ide is going to be out of date.
>>
>
> The IDE fragment was on for compatibility reasons, but we dropped that
> compatibility about a year ago. I was under the impression that we had
> fully dropped all the IDE fragments.
>

Adding Cal and Saul, since we are working through all these configs in
another effort, so I wanted to get their thoughts as well.

I had a chance to go back and look at the configs, and even though I can
find the email where it has been proposed, and I've agreed, to shoot
CONFIG_IDE
in the head, and use generic SCSI instead .. config IDE is still in
 common-pc-drivers.cfg
which means that x86 board, and the x86 kvm guest are picking it up.

Cal/Saul: does this match what you are seeing ?


>
>>
>> I've tried to enable it by menuconfig, it works well, would you please
>> enable it by default ?
>>
>
>
> Send a patch to the linux-yocto mailing list to change the virtio
> configuration
> fragment.
>
> You are already set up to test it out, so it is much easier.
>
> I don't see why this shouldn't follow the normal patch flow for
> configuration
> frag changes.
>

Back to this. We just need a patch to the linux-yocto list, for the
configuration
change, and we can evaluate it like any other patch!

Cheers,

Bruce


>
> Cheers,
>
> Bruce
>
>
>>
>>
>> $ diff .config.old .config -Nur
>> --- .config.old 2016-02-25 01:04:25.816381913 -0800
>> +++ .config     2016-02-25 01:16:31.332232759 -0800
>> @@ -1479,7 +1479,7 @@
>>  # CONFIG_SCSI_DEBUG is not set
>>  # CONFIG_SCSI_PMCRAID is not set
>>  # CONFIG_SCSI_PM8001 is not set
>> -# CONFIG_SCSI_VIRTIO is not set
>> +CONFIG_SCSI_VIRTIO=y
>>  # CONFIG_SCSI_DH is not set
>>  # CONFIG_SCSI_OSD_INITIATOR is not set
>>  CONFIG_ATA=y
>>
>> $ du bzImage bzImage_new
>> 6752    bzImage
>> 6756    bzImage_new
>>
>> It nearly has no impact on the size.
>>
>> --
>> Thanks
>>
>> Robert
>> --
>> _______________________________________________
>> Openembedded-core mailing list
>> Openembedded-core@lists.openembedded.org
>> http://lists.openembedded.org/mailman/listinfo/openembedded-core
>>
>
>
>
> --
> "Thou shalt not follow the NULL pointer, for chaos and madness await thee
> at its end"
>



-- 
"Thou shalt not follow the NULL pointer, for chaos and madness await thee
at its end"

[-- Attachment #2: Type: text/html, Size: 5390 bytes --]

Re: qemu needs target kernel sets CONFIG_SCSI_VIRTIO=y to boot vmdk qcow2 and vdi

[Robert Yang]

On 02/25/2016 08:42 PM, Bruce Ashfield wrote:
>
>
> On Thu, Feb 25, 2016 at 5:36 AM, Robert Yang <liezhi.yang@windriver.com
> <mailto:liezhi.yang@windriver.com>> wrote:
>
>     Hi Bruce and Darren,
>
>     We need enable target kernel's CONFIG_SCSI_VIRTIO=y to make native qemu
>     can boot hdddirect, vmdk, qcow2 and vdi, otherwise, the scsi drive can't
>     work in qemu since our vm image's root default to /dev/sda2, or we can
>     change it default to /dev/hda2, then we don't have to make any changes
>     on kernel, but I prefer scsi since ide is going to be out of date.
>
>
> The IDE fragment was on for compatibility reasons, but we dropped that
> compatibility about a year ago. I was under the impression that we had
> fully dropped all the IDE fragments.
>
>
>     I've tried to enable it by menuconfig, it works well, would you please
>     enable it by default ?
>
>
>
> Send a patch to the linux-yocto mailing list to change the virtio configuration
> fragment.
>
> You are already set up to test it out, so it is much easier.
>
> I don't see why this shouldn't follow the normal patch flow for configuration
> frag changes.

Sorry, the problem was that I didn't know how to send patch for yocto kernel:-).
I will send the patch to linux-yocto.

// Robert

>
> Cheers,
>
> Bruce
>
>
>
>     $ diff .config.old .config -Nur
>     --- .config.old 2016-02-25 01:04:25.816381913 -0800
>     +++ .config     2016-02-25 01:16:31.332232759 -0800
>     @@ -1479,7 +1479,7 @@
>       # CONFIG_SCSI_DEBUG is not set
>       # CONFIG_SCSI_PMCRAID is not set
>       # CONFIG_SCSI_PM8001 is not set
>     -# CONFIG_SCSI_VIRTIO is not set
>     +CONFIG_SCSI_VIRTIO=y
>       # CONFIG_SCSI_DH is not set
>       # CONFIG_SCSI_OSD_INITIATOR is not set
>       CONFIG_ATA=y
>
>     $ du bzImage bzImage_new
>     6752    bzImage
>     6756    bzImage_new
>
>     It nearly has no impact on the size.
>
>     --
>     Thanks
>
>     Robert
>     --
>     _______________________________________________
>     Openembedded-core mailing list
>     Openembedded-core@lists.openembedded.org
>     <mailto:Openembedded-core@lists.openembedded.org>
>     http://lists.openembedded.org/mailman/listinfo/openembedded-core
>
>
>
>
> --
> "Thou shalt not follow the NULL pointer, for chaos and madness await thee at its
> end"