When will Linux support new RAID controllers

When will Linux support new RAID controllers

[David F.]

It seems that Linux will not see any HD on Intel's 100 Series or newer
chipsets (Z170, etc.) when in RAID mode.  (typically these systems
have M2 NVMe devices ). This is problematic when wanting to use Linux
on the system without having to disable RAID and when on their with
Windows.   Maybe not a linux-raid issue, but is Linux RAID issue
within the kernel device support.

Re: When will Linux support new RAID controllers

[Christoph Hellwig]

On Thu, Nov 09, 2017 at 10:24:54AM -0800, David F. wrote:
> It seems that Linux will not see any HD on Intel's 100 Series or newer
> chipsets (Z170, etc.) when in RAID mode.  (typically these systems
> have M2 NVMe devices ). This is problematic when wanting to use Linux
> on the system without having to disable RAID and when on their with
> Windows.   Maybe not a linux-raid issue, but is Linux RAID issue
> within the kernel device support.

Dan (on Cc) posted some patches to support the awkwared so called
"RAID" mode (it really should be Intel landgrab mode) in the client
chipsets more than a year ago.

It needed a bit of a rework to be present as a fake PCIe root port
instead of the platform driver magic, so I wonder what happened to
it - Dan any chance to get back to it?

Re: When will Linux support new RAID controllers

[Dennis Mungai]

That feature would be especially important on systems where the
BIOS/UEFI environment offers no option to toggle back the AHCI mode.
This "RAID" Intel features is also known as "Intel Premium RST mode"
on all current Clevo systems, and on such a platform (the Clevo
P751DM2-G, marketed by the likes of Schenker and Origin PC) is based
on this platform.

-Dennis.

On 10 November 2017 at 16:19, Christoph Hellwig <hch@infradead.org> wrote:
> On Thu, Nov 09, 2017 at 10:24:54AM -0800, David F. wrote:
>> It seems that Linux will not see any HD on Intel's 100 Series or newer
>> chipsets (Z170, etc.) when in RAID mode.  (typically these systems
>> have M2 NVMe devices ). This is problematic when wanting to use Linux
>> on the system without having to disable RAID and when on their with
>> Windows.   Maybe not a linux-raid issue, but is Linux RAID issue
>> within the kernel device support.
>
> Dan (on Cc) posted some patches to support the awkwared so called
> "RAID" mode (it really should be Intel landgrab mode) in the client
> chipsets more than a year ago.
>
> It needed a bit of a rework to be present as a fake PCIe root port
> instead of the platform driver magic, so I wonder what happened to
> it - Dan any chance to get back to it?
>
> _______________________________________________
> Linux-nvme mailing list
> Linux-nvme@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-nvme

Re: When will Linux support new RAID controllers

[David F.]

A patch would be great.  There has been several cases where no option
to use AHCI mode available, or where a box seller would offer Linux as
an alternate boot option against Windows in RAID mode (on the mobo)
but could no longer provide Linux with their systems (without
additional costs for add-in raid controller).

On Fri, Nov 10, 2017 at 5:31 AM, Dennis Mungai <dmngaie@gmail.com> wrote:
> That feature would be especially important on systems where the
> BIOS/UEFI environment offers no option to toggle back the AHCI mode.
> This "RAID" Intel features is also known as "Intel Premium RST mode"
> on all current Clevo systems, and on such a platform (the Clevo
> P751DM2-G, marketed by the likes of Schenker and Origin PC) is based
> on this platform.
>
> -Dennis.
>
> On 10 November 2017 at 16:19, Christoph Hellwig <hch@infradead.org> wrote:
>> On Thu, Nov 09, 2017 at 10:24:54AM -0800, David F. wrote:
>>> It seems that Linux will not see any HD on Intel's 100 Series or newer
>>> chipsets (Z170, etc.) when in RAID mode.  (typically these systems
>>> have M2 NVMe devices ). This is problematic when wanting to use Linux
>>> on the system without having to disable RAID and when on their with
>>> Windows.   Maybe not a linux-raid issue, but is Linux RAID issue
>>> within the kernel device support.
>>
>> Dan (on Cc) posted some patches to support the awkwared so called
>> "RAID" mode (it really should be Intel landgrab mode) in the client
>> chipsets more than a year ago.
>>
>> It needed a bit of a rework to be present as a fake PCIe root port
>> instead of the platform driver magic, so I wonder what happened to
>> it - Dan any chance to get back to it?
>>
>> _______________________________________________
>> Linux-nvme mailing list
>> Linux-nvme@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-nvme

Re: When will Linux support new RAID controllers

[David F.]

Hi,

Any word if the patch is available?

Is this going mainline anytime soon?


On Fri, Nov 10, 2017 at 11:06 AM, David F. <df7729@gmail.com> wrote:
> A patch would be great.  There has been several cases where no option
> to use AHCI mode available, or where a box seller would offer Linux as
> an alternate boot option against Windows in RAID mode (on the mobo)
> but could no longer provide Linux with their systems (without
> additional costs for add-in raid controller).
>
> On Fri, Nov 10, 2017 at 5:31 AM, Dennis Mungai <dmngaie@gmail.com> wrote:
>> That feature would be especially important on systems where the
>> BIOS/UEFI environment offers no option to toggle back the AHCI mode.
>> This "RAID" Intel features is also known as "Intel Premium RST mode"
>> on all current Clevo systems, and on such a platform (the Clevo
>> P751DM2-G, marketed by the likes of Schenker and Origin PC) is based
>> on this platform.
>>
>> -Dennis.
>>
>> On 10 November 2017 at 16:19, Christoph Hellwig <hch@infradead.org> wrote:
>>> On Thu, Nov 09, 2017 at 10:24:54AM -0800, David F. wrote:
>>>> It seems that Linux will not see any HD on Intel's 100 Series or newer
>>>> chipsets (Z170, etc.) when in RAID mode.  (typically these systems
>>>> have M2 NVMe devices ). This is problematic when wanting to use Linux
>>>> on the system without having to disable RAID and when on their with
>>>> Windows.   Maybe not a linux-raid issue, but is Linux RAID issue
>>>> within the kernel device support.
>>>
>>> Dan (on Cc) posted some patches to support the awkwared so called
>>> "RAID" mode (it really should be Intel landgrab mode) in the client
>>> chipsets more than a year ago.
>>>
>>> It needed a bit of a rework to be present as a fake PCIe root port
>>> instead of the platform driver magic, so I wonder what happened to
>>> it - Dan any chance to get back to it?
>>>
>>> _______________________________________________
>>> Linux-nvme mailing list
>>> Linux-nvme@lists.infradead.org
>>> http://lists.infradead.org/mailman/listinfo/linux-nvme

Re: When will Linux support new RAID controllers

[Christoph Hellwig]

I guess poor Dan got a gag order from the people responsible for this
mess at Intel or something, as he's usually quick to reply and very
helpful.

On Mon, Dec 04, 2017 at 06:01:10PM -0800, David F. wrote:
> Hi,
> 
> Any word if the patch is available?
> 
> Is this going mainline anytime soon?
> 
> 
> On Fri, Nov 10, 2017 at 11:06 AM, David F. <df7729@gmail.com> wrote:
> > A patch would be great.  There has been several cases where no option
> > to use AHCI mode available, or where a box seller would offer Linux as
> > an alternate boot option against Windows in RAID mode (on the mobo)
> > but could no longer provide Linux with their systems (without
> > additional costs for add-in raid controller).
> >
> > On Fri, Nov 10, 2017 at 5:31 AM, Dennis Mungai <dmngaie@gmail.com> wrote:
> >> That feature would be especially important on systems where the
> >> BIOS/UEFI environment offers no option to toggle back the AHCI mode.
> >> This "RAID" Intel features is also known as "Intel Premium RST mode"
> >> on all current Clevo systems, and on such a platform (the Clevo
> >> P751DM2-G, marketed by the likes of Schenker and Origin PC) is based
> >> on this platform.
> >>
> >> -Dennis.
> >>
> >> On 10 November 2017 at 16:19, Christoph Hellwig <hch@infradead.org> wrote:
> >>> On Thu, Nov 09, 2017 at 10:24:54AM -0800, David F. wrote:
> >>>> It seems that Linux will not see any HD on Intel's 100 Series or newer
> >>>> chipsets (Z170, etc.) when in RAID mode.  (typically these systems
> >>>> have M2 NVMe devices ). This is problematic when wanting to use Linux
> >>>> on the system without having to disable RAID and when on their with
> >>>> Windows.   Maybe not a linux-raid issue, but is Linux RAID issue
> >>>> within the kernel device support.
> >>>
> >>> Dan (on Cc) posted some patches to support the awkwared so called
> >>> "RAID" mode (it really should be Intel landgrab mode) in the client
> >>> chipsets more than a year ago.
> >>>
> >>> It needed a bit of a rework to be present as a fake PCIe root port
> >>> instead of the platform driver magic, so I wonder what happened to
> >>> it - Dan any chance to get back to it?
> >>>
> >>> _______________________________________________
> >>> Linux-nvme mailing list
> >>> Linux-nvme@lists.infradead.org
> >>> http://lists.infradead.org/mailman/listinfo/linux-nvme
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---end quoted text---

Re: When will Linux support new RAID controllers

[Alan Cox]

On Mon, 4 Dec 2017 18:01:10 -0800
"David F." <df7729@gmail.com> wrote:

> Hi,
> 
> Any word if the patch is available?
> 
> Is this going mainline anytime soon?

I am not aware of anyone in Intel working on it or planning to work on it
at this point. Nothing stops someone outside of Intel doing that from the
code that was released.

For things that need BIOS changes whatever the vendor my experience has
always been that you make the most impact by talking to the actual system
vendor (who controls the BIOS), including telling them why you didn't buy
their machine. At the end of the day businesses make decisions based on
dollars.

Alan

Re: When will Linux support new RAID controllers

[Dennis Mungai]

Eventually, a driver will roll out. The question is when.



On 7 December 2017 at 17:16, Alan Cox <gnomes@lxorguk.ukuu.org.uk> wrote:
> On Mon, 4 Dec 2017 18:01:10 -0800
> "David F." <df7729@gmail.com> wrote:
>
>> Hi,
>>
>> Any word if the patch is available?
>>
>> Is this going mainline anytime soon?
>
> I am not aware of anyone in Intel working on it or planning to work on it
> at this point. Nothing stops someone outside of Intel doing that from the
> code that was released.
>
> For things that need BIOS changes whatever the vendor my experience has
> always been that you make the most impact by talking to the actual system
> vendor (who controls the BIOS), including telling them why you didn't buy
> their machine. At the end of the day businesses make decisions based on
> dollars.
>
> Alan

Re: When will Linux support new RAID controllers

[David F.]

Where is the code/patch that was released?  If nobody knows about it,
nobody can work on it.

"I am not aware of anyone in Intel working on it or planning to work on it
at this point. Nothing stops someone outside of Intel doing that from the
code that was released."

On Thu, Dec 7, 2017 at 6:18 AM, Dennis Mungai <dmngaie@gmail.com> wrote:
> Eventually, a driver will roll out. The question is when.
>
>
>
> On 7 December 2017 at 17:16, Alan Cox <gnomes@lxorguk.ukuu.org.uk> wrote:
>> On Mon, 4 Dec 2017 18:01:10 -0800
>> "David F." <df7729@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> Any word if the patch is available?
>>>
>>> Is this going mainline anytime soon?
>>
>> I am not aware of anyone in Intel working on it or planning to work on it
>> at this point. Nothing stops someone outside of Intel doing that from the
>> code that was released.
>>
>> For things that need BIOS changes whatever the vendor my experience has
>> always been that you make the most impact by talking to the actual system
>> vendor (who controls the BIOS), including telling them why you didn't buy
>> their machine. At the end of the day businesses make decisions based on
>> dollars.
>>
>> Alan