Re: [Lsf-pc] [LSF/MM TOPIC] async buffered diskio read for userspace apps
From: Jens Axboe <axboe@kernel.dk>
Date: 2015-01-24 23:00:46
Also in:
linux-fsdevel
On 01/23/2015 10:53 PM, Jeremy Allison wrote:
On Fri, Jan 23, 2015 at 07:17:05PM -0700, Jens Axboe wrote:quoted
On 01/23/2015 04:15 PM, Steve French wrote:quoted
On Mon, Jan 19, 2015 at 10:20 AM, Milosz Tanski [off-list ref] wrote:quoted
On Mon, Jan 19, 2015 at 11:10 AM, Volker Lendecke [off-list ref] wrote:quoted
On Mon, Jan 19, 2015 at 08:31:27AM -0700, Jens Axboe wrote:quoted
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. VolkerVolker, 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.How did the license issue get solved ? Did I miss some email on that ?
Only the cifs engine is linked with libsmbclient, so that particular engine can be licensed as v2 or later (or v3, u to Milosz). -- Jens Axboe -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>