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From: Jens Axboe <axboe@kernel.dk>
To: Steve French <smfrench@gmail.com>, Milosz Tanski <milosz@adfin.com>
Cc: Volker Lendecke <Volker.Lendecke@sernet.de>,
	James Bottomley <James.Bottomley@hansenpartnership.com>,
	Jeremy Allison <jra@samba.org>, Jan Kara <jack@suse.cz>,
	Christoph Hellwig <hch@infradead.org>,
	linux-mm <linux-mm@kvack.org>,
	"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	"lsf-pc@lists.linux-foundation.org"
	<lsf-pc@lists.linux-foundation.org>
Subject: Re: [Lsf-pc] [LSF/MM TOPIC] async buffered diskio read for userspace apps
Date: Fri, 23 Jan 2015 19:17:05 -0700	[thread overview]
Message-ID: <54C300A1.7040202@kernel.dk> (raw)
In-Reply-To: <CAH2r5mv29sv1jz=Oh+BJY8hokZtLFMReVUZ=RLX-36yAwXOXoA@mail.gmail.com>

On 01/23/2015 04:15 PM, Steve French wrote:
> On Mon, Jan 19, 2015 at 10:20 AM, Milosz Tanski <milosz@adfin.com> wrote:
>> On Mon, Jan 19, 2015 at 11:10 AM, Volker Lendecke
>> <Volker.Lendecke@sernet.de> wrote:
>>> On Mon, Jan 19, 2015 at 08:31:27AM -0700, Jens Axboe wrote:
>>>> I didn't look at your code yet, but I'm assuming it's a self
>>>> contained IO engine. So we should be able to make that work, by only
>>>> linking the engine itself against libsmbclient. But sheesh, what a
>>>> pain in the butt, why can't we just all be friends.
>>>
>>> The published libsmbclient API misses the async features
>>> that are needed here. Milosz needs to go lower-level.
>>>
>>> Volker
>>
>> Volker, the sync code path works; in fact I pushed some minor
>> corrections to my branch this morning. And for now using FIO I can
>> generate multiple clients (threads / processes).
>>
>> I started working on the async features (SMB2 async read/write) for
>> client library the samba repo. There's a patch there for the first
>> step of it it there; see the other email I sent to you and Jeremy. I
>> was going to make sure it licensed under whatever it needs to get into
>> the samba repo... and since this is done on my own time I personally
>> don't care what license it's under provided it's not a PITA.
>
> Why not do the async read/write via the kernel client if the license
> is an issue?  It already has async SMB2/SMB3 operations
> (with a synchronous send/receive-like wrapper).

The license issue has been solved. Fio is cross platform, so would be 
preferable to have this work through libsmbclient, if at all possible.

-- 
Jens Axboe


  reply	other threads:[~2015-01-24  2:17 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-15 17:43 [LSF/MM TOPIC] async buffered diskio read for userspace apps Milosz Tanski
2015-01-15 18:30 ` Jeff Moyer
2015-01-16 15:40   ` Milosz Tanski
2015-01-15 22:31 ` [Lsf-pc] " Jan Kara
2015-01-16 15:44   ` Milosz Tanski
2015-01-16 16:55     ` Jeremy Allison
2015-01-19  3:49       ` Milosz Tanski
2015-01-19  7:12         ` Jeremy Allison
2015-01-19  7:34           ` James Bottomley
2015-01-19 14:18             ` Milosz Tanski
2015-01-19 15:31               ` Jens Axboe
2015-01-19 15:49                 ` James Bottomley
2015-01-19 16:48                   ` Jeremy Allison
2015-01-19 17:26                     ` James Bottomley
2015-01-19 17:32                       ` Jeremy Allison
2015-01-19 17:36                       ` Richard Sharpe
2015-01-19 20:00                     ` Jens Axboe
2015-01-19 16:10                 ` Volker Lendecke
2015-01-19 16:20                   ` Milosz Tanski
2015-01-19 16:50                     ` Jeremy Allison
2015-01-23 23:15                     ` Steve French
2015-01-24  2:17                       ` Jens Axboe [this message]
2015-01-24  5:53                         ` Jeremy Allison
2015-01-24 23:00                           ` Jens Axboe
2015-01-20 19:33                 ` Jens Axboe
2015-01-20 23:07                   ` Milosz Tanski
2015-01-20 23:22                     ` Milosz Tanski
2015-01-20 23:26                       ` Jens Axboe
2015-01-20 23:30                         ` Jens Axboe
2015-01-20 23:53                           ` Milosz Tanski
2015-01-21 21:17                             ` Jens Axboe
2015-01-23  0:03                               ` Milosz Tanski
2015-01-23  0:10                               ` Milosz Tanski
2015-01-19 17:04               ` Jeremy Allison
2015-01-19 17:18                 ` Richard Sharpe
2015-01-19 17:20                   ` Jeremy Allison

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