Re: [Scst-devel] Fwd: Re: linuxcon 2010...

From: Bart Van Assche
Date: Wed Aug 18 2010 - 12:19:31 EST


On Wed, Aug 18, 2010 at 5:11 PM, James Bottomley
<James.Bottomley@xxxxxxx> wrote:
> On Wed, 2010-08-18 at 07:58 -0700, Chetan Loke wrote:
>> Hello James and others,
>>
>> --- On Tue, 8/17/10, James Bottomley <James.Bottomley@xxxxxxx> wrote:
>>
>> > From: James Bottomley <James.Bottomley@xxxxxxx>
>> > Subject: Re: [Scst-devel] Fwd: Re:  linuxcon 2010...
>> > To: "Vladislav Bolkhovitin" <vst@xxxxxxxx>
>> > Cc: "scst-devel" <scst-devel@xxxxxxxxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx
>> > Date: Tuesday, August 17, 2010, 8:30 PM
>> > On Mon, 2010-08-16 at 20:20 +0400,
>> > Vladislav Bolkhovitin wrote:
>> > > Hello James,
>> > >
>> > > Could you comment rumors that decision about future
>> > Linux SCSI target
>> > > subsystem is done as well as other related rumors:
>> >
>> > If this is related to LSF, the notes on the I/O track are
>> > here:
>> >
>> > http://lwn.net/Articles/400491/
>>
>>
>> During the open panel, my question was really specific -
>>
>> Q) What is the future of a SCSI-target subsystem in linux. Which
>>    target engine/subsystem can we expect?
>>
>> Your answer) There is place for only 1 target-subsystem in the Linux
>> scsi stack and in the LSF summit the decision was taken to merge LIO.
>> Has that
>> decision changed since the summit?
>
> The decision hasn't been taken to merge LIO, but based on what happened
> at the summit, I think it's the most viable candidate and will likely be
> merged by 2.6.37
>
>> As a scst-user what I would like to understand is, what was that
>> decision based on? Because the LSF summit was 'small by invitation'
>> only summit. The notes don't give us an insight on the selection
>> criteria/merits etc.
>
> The notes list 3, what's unclear about it?

Hello James,

Thanks for taking notes during the storage track and sharing these
notes (http://lwn.net/Articles/400589/). These notes are interesting
but do not reveal why LIO is preferred.

Also, the list with the three acceptance criteria is incomplete. A
very important criterion before any kernel code can be merged upstream
is whether or not there is a maintainer for that code. Someone who has
proven prior kernel coding experience and someone who understands the
new code thoroughly.

Bart.
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