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SubjectRe: remove exofs and the T10 OSD code V2
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On 31/10/18 19:29, Bart Van Assche wrote:
> On Wed, 2018-10-31 at 18:34 +0200, Boaz Harrosh wrote:
>> On 27/10/18 11:20, Christoph Hellwig wrote:
>>> The only real user of the T10 OSD protocol, the pNFS object layout
>>> driver never went to the point of having shipping products, and we
>>> removed it 1.5 years ago. Exofs is just a simple example without
>>> real life users.
>>>
>>> The code has been mostly unmaintained for years and is getting in the
>>> way of block / SCSI changes, so I think it's finally time to drop it.
>>>
>>> Quote from Boaz:
>>>
>>> "As I said then. It is used in Universities for studies and experiments.
>>> Every once in a while. I get an email with questions and reports.
>>>
>>> But yes feel free to remove the all thing!!
>>
>> I think I'm changing my mind about this.
>> [ ... ]
>
> The osd driver was accepted in the upstream kernel in 2009. I have checked all
> commits in Linus' tree for the osd driver that went in since 2009. All changes
> made by other kernel developers than you are the result of tree-wide refactoring,
> compiler warning fixes, fixes for issues detected by static source code
> analyzers or spelling fixes. Hence my question: how big is the user base of the
> exofs and osd kernel drivers?
>

Not big at all. And none of them production setups. As I said mainly used
by academia.

Thanks
Boaz

> Thanks,
> Bart.

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