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From: Bart Van Assche <bart.vanassche@wdc.com>
To: Danil Kipnis <danil.kipnis@profitbricks.com>,
	Sagi Grimberg <sagi@grimberg.me>
Cc: Jinpu Wang <jinpu.wang@profitbricks.com>,
	"roman.penyaev@profitbricks.com" <roman.penyaev@profitbricks.com>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
	"hch@infradead.org" <hch@infradead.org>,
	"ogerlitz@mellanox.com" <ogerlitz@mellanox.com>,
	"axboe@kernel.dk" <axboe@kernel.dk>
Subject: Re: [PATCH 00/24] InfiniBand Transport (IBTRS) and Network Block Device (IBNBD)
Date: Mon, 5 Feb 2018 10:38:45 -0800	[thread overview]
Message-ID: <9abc87a6-cb47-d3bf-65c6-6f386401bdb9@wdc.com> (raw)
In-Reply-To: <CAHg0HuxtvRvPcX8yZxcwSSP5XK6ZnLbxBkpx+X7QyDZtny3XZA@mail.gmail.com>

On 02/05/18 08:40, Danil Kipnis wrote:
> It just occurred to me, that we could easily extend the interface in
> such a way that each client (i.e. each session) would have on server
> side her own directory with the devices it can access. I.e. instead of
> just "dev_search_path" per server, any client would be able to only
> access devices under <dev_search_path>/session_name. (session name
> must already be generated by each client in a unique way). This way
> one could have an explicit control over which devices can be accessed
> by which clients. Do you think that would do it?

Hello Danil,

That sounds interesting to me. However, I think that approach requires 
to configure client access completely before the kernel target side 
module is loaded. It does not allow to configure permissions dynamically 
after the kernel target module has been loaded. Additionally, I don't 
see how to support attributes per (initiator, block device) pair with 
that approach. LIO e.g. supports the 
/sys/kernel/config/target/srpt/*/*/acls/*/lun_*/write_protect attribute. 
You may want to implement similar functionality if you want to convince 
more users to use IBNBD.

Thanks,

Bart.

  reply	other threads:[~2018-02-05 18:38 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-02-02 14:08 [PATCH 00/24] InfiniBand Transport (IBTRS) and Network Block Device (IBNBD) Roman Pen
2018-02-02 14:08 ` [PATCH 01/24] ibtrs: public interface header to establish RDMA connections Roman Pen
2018-02-02 14:08 ` [PATCH 02/24] ibtrs: private headers with IBTRS protocol structs and helpers Roman Pen
2018-02-02 14:08 ` [PATCH 03/24] ibtrs: core: lib functions shared between client and server modules Roman Pen
2018-02-05 10:52   ` Sagi Grimberg
2018-02-06 12:01     ` Roman Penyaev
2018-02-06 16:10       ` Jason Gunthorpe
2018-02-07 10:34         ` Roman Penyaev
2018-02-02 14:08 ` [PATCH 04/24] ibtrs: client: private header with client structs and functions Roman Pen
2018-02-05 10:59   ` Sagi Grimberg
2018-02-06 12:23     ` Roman Penyaev
2018-02-02 14:08 ` [PATCH 05/24] ibtrs: client: main functionality Roman Pen
2018-02-02 16:54   ` Bart Van Assche
2018-02-05 13:27     ` Roman Penyaev
2018-02-05 14:14       ` Sagi Grimberg
2018-02-05 17:05         ` Roman Penyaev
2018-02-05 11:19   ` Sagi Grimberg
2018-02-05 14:19     ` Roman Penyaev
2018-02-05 16:24       ` Bart Van Assche
2018-02-02 14:08 ` [PATCH 06/24] ibtrs: client: statistics functions Roman Pen
2018-02-02 14:08 ` [PATCH 07/24] ibtrs: client: sysfs interface functions Roman Pen
2018-02-05 11:20   ` Sagi Grimberg
2018-02-06 12:28     ` Roman Penyaev
2018-02-02 14:08 ` [PATCH 08/24] ibtrs: server: private header with server structs and functions Roman Pen
2018-02-02 14:08 ` [PATCH 09/24] ibtrs: server: main functionality Roman Pen
2018-02-05 11:29   ` Sagi Grimberg
2018-02-06 12:46     ` Roman Penyaev
2018-02-02 14:08 ` [PATCH 10/24] ibtrs: server: statistics functions Roman Pen
2018-02-02 14:08 ` [PATCH 11/24] ibtrs: server: sysfs interface functions Roman Pen
2018-02-02 14:08 ` [PATCH 12/24] ibtrs: include client and server modules into kernel compilation Roman Pen
2018-02-02 14:08 ` [PATCH 13/24] ibtrs: a bit of documentation Roman Pen
2018-02-02 14:08 ` [PATCH 14/24] ibnbd: private headers with IBNBD protocol structs and helpers Roman Pen
2018-02-02 14:08 ` [PATCH 15/24] ibnbd: client: private header with client structs and functions Roman Pen
2018-02-02 14:08 ` [PATCH 16/24] ibnbd: client: main functionality Roman Pen
2018-02-02 15:11   ` Jens Axboe
2018-02-05 12:54     ` Roman Penyaev
2018-02-02 14:08 ` [PATCH 17/24] ibnbd: client: sysfs interface functions Roman Pen
2018-02-02 14:08 ` [PATCH 18/24] ibnbd: server: private header with server structs and functions Roman Pen
2018-02-02 14:08 ` [PATCH 19/24] ibnbd: server: main functionality Roman Pen
2018-02-02 14:09 ` [PATCH 20/24] ibnbd: server: functionality for IO submission to file or block dev Roman Pen
2018-02-02 14:09 ` [PATCH 21/24] ibnbd: server: sysfs interface functions Roman Pen
2018-02-02 14:09 ` [PATCH 22/24] ibnbd: include client and server modules into kernel compilation Roman Pen
2018-02-02 14:09 ` [PATCH 23/24] ibnbd: a bit of documentation Roman Pen
2018-02-02 15:55   ` Bart Van Assche
2018-02-05 13:03     ` Roman Penyaev
2018-02-05 14:16       ` Sagi Grimberg
2018-02-02 14:09 ` [PATCH 24/24] MAINTAINERS: Add maintainer for IBNBD/IBTRS modules Roman Pen
2018-02-02 16:07 ` [PATCH 00/24] InfiniBand Transport (IBTRS) and Network Block Device (IBNBD) Bart Van Assche
2018-02-02 16:40   ` Doug Ledford
2018-02-05  8:45     ` Jinpu Wang
2018-06-04 12:14     ` Danil Kipnis
2018-02-02 17:05 ` Bart Van Assche
2018-02-05  8:56   ` Jinpu Wang
2018-02-05 11:36     ` Sagi Grimberg
2018-02-05 13:38       ` Danil Kipnis
2018-02-05 14:17         ` Sagi Grimberg
2018-02-05 16:40           ` Danil Kipnis
2018-02-05 18:38             ` Bart Van Assche [this message]
2018-02-06  9:44               ` Danil Kipnis
2018-02-06 15:35                 ` Bart Van Assche
2018-02-05 16:16     ` Bart Van Assche
2018-02-05 16:36       ` Jinpu Wang
2018-02-07 16:35       ` Christopher Lameter
2018-02-07 17:18         ` Roman Penyaev
2018-02-07 17:32           ` Bart Van Assche
2018-02-08 17:38             ` Danil Kipnis
2018-02-08 18:09               ` Bart Van Assche
2018-06-04 12:27                 ` Danil Kipnis
2018-02-05 12:16 ` Sagi Grimberg
2018-02-05 12:30   ` Sagi Grimberg
2018-02-07 13:06     ` Roman Penyaev
2018-02-05 16:58   ` Bart Van Assche
2018-02-05 17:16     ` Roman Penyaev
2018-02-05 17:20       ` Bart Van Assche
2018-02-06 11:47         ` Roman Penyaev
2018-02-06 13:12   ` Roman Penyaev
2018-02-06 16:01     ` Bart Van Assche
2018-02-07 12:57       ` Roman Penyaev
2018-02-07 16:35         ` Bart Van Assche

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