From: Bart Van Assche <bvanassche@acm.org>
To: Ming Lei <ming.lei@redhat.com>, Stephen Rust <srust@blockbridge.com>
Cc: Rob Townley <rob.townley@gmail.com>,
Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-rdma@vger.kernel.org,
linux-scsi@vger.kernel.org, martin.petersen@oracle.com,
target-devel@vger.kernel.org, Doug Ledford <dledford@redhat.com>,
Jason Gunthorpe <jgg@ziepe.ca>, Sagi Grimberg <sagi@grimberg.me>,
Max Gurtovoy <maxg@mellanox.com>
Subject: Re: Data corruption in kernel 5.1+ with iSER attached ramdisk
Date: Wed, 4 Dec 2019 16:16:15 -0800 [thread overview]
Message-ID: <683a4567-6b34-ac3b-93ff-74d788ac4242@acm.org> (raw)
In-Reply-To: <20191204230225.GA26189@ming.t460p>
On 12/4/19 3:02 PM, Ming Lei wrote:
> On Wed, Dec 04, 2019 at 12:23:39PM -0500, Stephen Rust wrote:
>> Presumably non-brd devices, ie: real scsi devices work for these test
>> cases because they accept un-aligned buffers?
>
> Right, not every driver supports such un-aligned buffer.
>
> I am not familiar with RDMA, but from the trace we have done so far,
> it is highly related with iser driver.
Hi Stephen,
Do you need the iSER protocol? I think that the NVMeOF and SRP drivers
also support RoCE and that these align data buffers on a 512 byte boundary.
Bart.
WARNING: multiple messages have this Message-ID (diff)
From: Bart Van Assche <bvanassche@acm.org>
To: Ming Lei <ming.lei@redhat.com>, Stephen Rust <srust@blockbridge.com>
Cc: Rob Townley <rob.townley@gmail.com>,
Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-rdma@vger.kernel.org,
linux-scsi@vger.kernel.org, martin.petersen@oracle.com,
target-devel@vger.kernel.org, Doug Ledford <dledford@redhat.com>,
Jason Gunthorpe <jgg@ziepe.ca>, Sagi Grimberg <sagi@grimberg.me>,
Max Gurtovoy <maxg@mellanox.com>
Subject: Re: Data corruption in kernel 5.1+ with iSER attached ramdisk
Date: Thu, 05 Dec 2019 00:16:15 +0000 [thread overview]
Message-ID: <683a4567-6b34-ac3b-93ff-74d788ac4242@acm.org> (raw)
In-Reply-To: <20191204230225.GA26189@ming.t460p>
On 12/4/19 3:02 PM, Ming Lei wrote:
> On Wed, Dec 04, 2019 at 12:23:39PM -0500, Stephen Rust wrote:
>> Presumably non-brd devices, ie: real scsi devices work for these test
>> cases because they accept un-aligned buffers?
>
> Right, not every driver supports such un-aligned buffer.
>
> I am not familiar with RDMA, but from the trace we have done so far,
> it is highly related with iser driver.
Hi Stephen,
Do you need the iSER protocol? I think that the NVMeOF and SRP drivers
also support RoCE and that these align data buffers on a 512 byte boundary.
Bart.
next prev parent reply other threads:[~2019-12-05 0:16 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAAFE1bd9wuuobpe4VK7Ty175j7mWT+kRmHCNhVD+6R8MWEAqmw@mail.gmail.com>
2019-11-28 1:57 ` Data corruption in kernel 5.1+ with iSER attached ramdisk Ming Lei
2019-11-28 1:57 ` Ming Lei
[not found] ` <CA+VdTb_-CGaPjKUQteKVFSGqDz-5o-tuRRkJYqt8B9iOQypiwQ@mail.gmail.com>
2019-11-28 2:58 ` Ming Lei
2019-11-28 2:58 ` Ming Lei
[not found] ` <CAAFE1bfsXsKGyw7SU_z4NanT+wmtuJT=XejBYbHHMCDQwm73sw@mail.gmail.com>
2019-11-28 4:25 ` Stephen Rust
2019-11-28 4:25 ` Stephen Rust
2019-11-28 5:51 ` Rob Townley
2019-11-28 5:51 ` Rob Townley
2019-11-28 9:12 ` Ming Lei
2019-11-28 9:12 ` Ming Lei
2019-12-02 18:42 ` Stephen Rust
2019-12-02 18:42 ` Stephen Rust
2019-12-03 0:58 ` Ming Lei
2019-12-03 0:58 ` Ming Lei
2019-12-03 3:04 ` Stephen Rust
2019-12-03 3:04 ` Stephen Rust
2019-12-03 3:14 ` Ming Lei
2019-12-03 3:14 ` Ming Lei
2019-12-03 3:26 ` Stephen Rust
2019-12-03 3:26 ` Stephen Rust
2019-12-03 3:50 ` Stephen Rust
2019-12-03 3:50 ` Stephen Rust
2019-12-03 12:45 ` Ming Lei
2019-12-03 12:45 ` Ming Lei
2019-12-03 19:56 ` Stephen Rust
2019-12-03 19:56 ` Stephen Rust
2019-12-04 1:05 ` Ming Lei
2019-12-04 1:05 ` Ming Lei
2019-12-04 17:23 ` Stephen Rust
2019-12-04 17:23 ` Stephen Rust
2019-12-04 23:02 ` Ming Lei
2019-12-04 23:02 ` Ming Lei
2019-12-05 0:16 ` Bart Van Assche [this message]
2019-12-05 0:16 ` Bart Van Assche
2019-12-05 14:44 ` Stephen Rust
2019-12-05 14:44 ` Stephen Rust
2019-12-05 2:28 ` Stephen Rust
2019-12-05 2:28 ` Stephen Rust
2019-12-05 3:05 ` Ming Lei
2019-12-05 3:05 ` Ming Lei
2019-12-05 9:17 ` Sagi Grimberg
2019-12-05 9:17 ` Sagi Grimberg
2019-12-05 14:36 ` Stephen Rust
2019-12-05 14:36 ` Stephen Rust
[not found] ` <CAAFE1beqFBQS_zVYEXFTD2qu8PAF9hBSW4j1k9ZD6MhU_gWg5Q@mail.gmail.com>
2020-03-25 0:15 ` Sagi Grimberg
2020-03-25 0:15 ` Sagi Grimberg
2020-03-30 17:08 ` Stephen Rust
2020-03-30 17:08 ` Stephen Rust
2020-03-31 1:07 ` Sagi Grimberg
2020-03-31 1:07 ` Sagi Grimberg
2020-04-01 0:38 ` Sagi Grimberg
2020-04-01 0:38 ` Sagi Grimberg
2020-04-02 20:03 ` Stephen Rust
2020-04-02 20:03 ` Stephen Rust
2020-04-02 22:16 ` Sagi Grimberg
2020-04-02 22:16 ` Sagi Grimberg
2019-12-04 2:39 ` Ming Lei
2019-12-04 2:39 ` Ming Lei
2019-12-03 4:15 ` Ming Lei
2019-12-03 4:15 ` Ming Lei
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=683a4567-6b34-ac3b-93ff-74d788ac4242@acm.org \
--to=bvanassche@acm.org \
--cc=axboe@kernel.dk \
--cc=dledford@redhat.com \
--cc=hch@lst.de \
--cc=jgg@ziepe.ca \
--cc=linux-block@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=martin.petersen@oracle.com \
--cc=maxg@mellanox.com \
--cc=ming.lei@redhat.com \
--cc=rob.townley@gmail.com \
--cc=sagi@grimberg.me \
--cc=srust@blockbridge.com \
--cc=target-devel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.