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From: Viacheslav Dubeyko <slava@dubeyko.com>
To: "Matias Bjørling" <m@bjorling.me>, lsf-pc@lists.linux-foundation.org
Cc: Linux FS Devel <linux-fsdevel@vger.kernel.org>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	Vyacheslav.Dubeyko@wdc.com, linux-nvme@lists.infradead.org
Subject: Re: [LSF/MM TOPIC][LSF/MM ATTEND] OCSSDs - SMR, Hierarchical Interface, and Vector I/Os
Date: Tue, 03 Jan 2017 09:35:21 -0800	[thread overview]
Message-ID: <1483464921.2440.19.camel@dubeyko.com> (raw)
In-Reply-To: <e42ff0c8-6568-d211-331f-7bfa6af94e2e@bjorling.me>

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WARNING: multiple messages have this Message-ID (diff)
From: Viacheslav Dubeyko <slava@dubeyko.com>
To: "Matias Bjørling" <m@bjorling.me>, lsf-pc@lists.linux-foundation.org
Cc: Linux FS Devel <linux-fsdevel@vger.kernel.org>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	linux-nvme@lists.infradead.org, Vyacheslav.Dubeyko@wdc.com
Subject: Re: [LSF/MM TOPIC][LSF/MM ATTEND] OCSSDs - SMR, Hierarchical Interface, and Vector I/Os
Date: Tue, 03 Jan 2017 09:35:21 -0800	[thread overview]
Message-ID: <1483464921.2440.19.camel@dubeyko.com> (raw)
In-Reply-To: <e42ff0c8-6568-d211-331f-7bfa6af94e2e@bjorling.me>

Hi Matias,

On Tue, 2017-01-03 at 09:56 +0100, Matias Bjørling wrote:
> On 01/03/2017 12:12 AM, Viacheslav Dubeyko wrote:
> > 
> > On Mon, 2017-01-02 at 22:06 +0100, Matias Bjørling wrote:
> > > 
> > > Hi,
> > > 
> > > The open-channel SSD subsystem is maturing, and drives are
> > > beginning
> > > to 
> > > become available on the market. 
> > What do you mean? We still have nothing on the market. I haven't
> > opportunity to access to any of such device. Could you share your
> > knowledge where and what device can be bought on the market?
> > 
> Hi Vyacheslav,
> 
> You are right that they are not available off the shelf at a
> convenient
> store. You may contact one of these vendors for availability: CNEX
> Labs
> (Westlake LightNVM SDK), Radian Memory Systems (RMS-325), and/or EMC
> (OX
> Controller + Dragon Fire card).

We, Western Digital, contacted with CNEX Labs about a half year ago.
Our request was refused. Also we contacted with Radian Memory Systems
about a year ago. Our negotiations finished with no sucess at all. And
I doubt that EMC will share with us something. So, such situation looks
really weird, especially for the case of open-source community. We
cannot access or test any Open-channel SSD nor for money nor under NDA.
Usually, open-source means that everybody has access to hardware and we
can discuss implementation, architecture or approach without any
restrictions. But we haven't access to hardware right now. I understand
the business model and blah, blah, blah. But it looks like that,
finally, we have nothing like Open-channel SSD on the market, from my
personal point of view. And I suppose that it's really tricky way to
discuss software interface or any other details about something that
doesn't exist at all. Because if I cannot take and test some hardware
then I cannot build my own opinion about this technology.

Thanks,
Vyacheslav Dubeyko.


WARNING: multiple messages have this Message-ID (diff)
From: slava@dubeyko.com (Viacheslav Dubeyko)
Subject: [LSF/MM TOPIC][LSF/MM ATTEND] OCSSDs - SMR, Hierarchical Interface, and Vector I/Os
Date: Tue, 03 Jan 2017 09:35:21 -0800	[thread overview]
Message-ID: <1483464921.2440.19.camel@dubeyko.com> (raw)
In-Reply-To: <e42ff0c8-6568-d211-331f-7bfa6af94e2e@bjorling.me>

Hi Matias,

On Tue, 2017-01-03@09:56 +0100, Matias Bj?rling wrote:
> On 01/03/2017 12:12 AM, Viacheslav Dubeyko wrote:
> > 
> > On Mon, 2017-01-02@22:06 +0100, Matias Bj?rling wrote:
> > > 
> > > Hi,
> > > 
> > > The open-channel SSD subsystem is maturing, and drives are
> > > beginning
> > > to?
> > > become available on the market.?
> > What do you mean? We still have nothing on the market. I haven't
> > opportunity to access to any of such device. Could you share your
> > knowledge where and what device can be bought on the market?
> > 
> Hi Vyacheslav,
> 
> You are right that they are not available off the shelf at a
> convenient
> store. You may contact one of these vendors for availability: CNEX
> Labs
> (Westlake LightNVM SDK), Radian Memory Systems (RMS-325), and/or EMC
> (OX
> Controller + Dragon Fire card).

We, Western Digital, contacted with CNEX Labs about a half year ago.
Our request was refused. Also we contacted with?Radian Memory Systems
about a year ago. Our negotiations finished with no sucess at all. And
I doubt that EMC will share with us something. So, such situation looks
really weird, especially for the case of open-source community. We
cannot access or test any Open-channel SSD nor for money nor under NDA.
Usually, open-source means that everybody has access to hardware and we
can discuss implementation, architecture or approach without any
restrictions. But we haven't access to hardware right now. I understand
the business model and blah, blah, blah. But it looks like that,
finally, we have nothing like Open-channel SSD on the market, from my
personal point of view. And I suppose that it's really tricky way to
discuss software interface or any other details about something that
doesn't exist at all. Because if I cannot take and test some hardware
then I cannot build my own opinion about this technology.

Thanks,
Vyacheslav Dubeyko.

  reply	other threads:[~2017-01-03 17:35 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-02 21:06 [LSF/MM TOPIC][LSF/MM ATTEND] OCSSDs - SMR, Hierarchical Interface, and Vector I/Os Matias Bjørling
2017-01-02 21:06 ` Matias Bjørling
2017-01-02 21:06 ` Matias Bjørling
2017-01-02 23:12 ` Viacheslav Dubeyko
2017-01-02 23:12   ` Viacheslav Dubeyko
2017-01-02 23:12   ` Viacheslav Dubeyko
2017-01-03  8:56   ` Matias Bjørling
2017-01-03  8:56     ` Matias Bjørling
2017-01-03 17:35     ` Viacheslav Dubeyko [this message]
2017-01-03 17:35       ` Viacheslav Dubeyko
2017-01-03 17:35       ` Viacheslav Dubeyko
2017-01-03 19:10       ` Matias Bjørling
2017-01-03 19:10         ` Matias Bjørling
2017-01-04  2:59         ` Slava Dubeyko
2017-01-04  2:59           ` Slava Dubeyko
2017-01-04  2:59           ` Slava Dubeyko
2017-01-04  7:24           ` Damien Le Moal
2017-01-04  7:24             ` Damien Le Moal
2017-01-04 12:39             ` Matias Bjørling
2017-01-04 12:39               ` Matias Bjørling
2017-01-04 16:57             ` Theodore Ts'o
2017-01-04 16:57               ` Theodore Ts'o
2017-01-10  1:42               ` Damien Le Moal
2017-01-10  1:42                 ` Damien Le Moal
2017-01-10  4:24                 ` Theodore Ts'o
2017-01-10  4:24                   ` Theodore Ts'o
2017-01-10 13:06                   ` Matias Bjorling
2017-01-10 13:06                     ` Matias Bjorling
2017-01-11  4:07                     ` Damien Le Moal
2017-01-11  4:07                       ` Damien Le Moal
2017-01-11  6:06                       ` Matias Bjorling
2017-01-11  6:06                         ` Matias Bjorling
2017-01-11  7:49                       ` Hannes Reinecke
2017-01-11  7:49                         ` Hannes Reinecke
2017-01-05 22:58             ` Slava Dubeyko
2017-01-05 22:58               ` Slava Dubeyko
2017-01-05 22:58               ` Slava Dubeyko
2017-01-06  1:11               ` Theodore Ts'o
2017-01-06  1:11                 ` Theodore Ts'o
2017-01-06 12:51                 ` Matias Bjørling
2017-01-06 12:51                   ` Matias Bjørling
2017-01-06 12:51                   ` Matias Bjørling
2017-01-09  6:49                 ` Slava Dubeyko
2017-01-09  6:49                   ` Slava Dubeyko
2017-01-09  6:49                   ` Slava Dubeyko
2017-01-09 14:55                   ` Theodore Ts'o
2017-01-09 14:55                     ` Theodore Ts'o
2017-01-09 14:55                     ` Theodore Ts'o
2017-01-06 13:05               ` Matias Bjørling
2017-01-06 13:05                 ` Matias Bjørling
2017-01-06 13:05                 ` Matias Bjørling
2017-01-06  1:09             ` Jaegeuk Kim
2017-01-06  1:09               ` Jaegeuk Kim
2017-01-06 12:55               ` Matias Bjørling
2017-01-06 12:55                 ` Matias Bjørling
2017-01-06 12:55                 ` Matias Bjørling
2017-01-12  1:33 ` [LSF/MM " Damien Le Moal
2017-01-12  2:18   ` [Lsf-pc] " James Bottomley
2017-01-12  2:18     ` James Bottomley
2017-01-12  2:35     ` Damien Le Moal
2017-01-12  2:35       ` Damien Le Moal
2017-01-12  2:38       ` James Bottomley
2017-01-12  2:38         ` James Bottomley

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