From: Ed Cashin <ecashin@coraid.com>
To: Tejun Heo <tj@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>, taeuber@bbaw.de
Subject: Re: aoeblk_make_request() chokes on zero-length barriers
Date: Wed, 3 Mar 2010 10:30:15 -0500 [thread overview]
Message-ID: <20100303153015.GD3268@coraid.com> (raw)
In-Reply-To: <4B8DE160.5070506@kernel.org>
On Wed, Mar 03, 2010 at 01:11:12PM +0900, Tejun Heo wrote:
> Hello, Ed L. Cashin.
>
> This is reported on openSUSE 11.2 by Lars Tauber on bnc581271[1] but
> upstream code seems to have the same problem. If a bio doesn't have
> bi_io_vec, aoeblk_make_request() triggers BUG() but in recent kernels
> the block layer will happily send down zero-length barrier bios w/o
> bi_io_vec set.
It looks like the opensuse 11.x kernel doesn't have the
change that made aoe return -EOPNOTSUPP for barriers.
It's commit 18d8217bc441630c3c5ec7416c5a65c69e8a0979,
appearing in v2.6.32-rc1.
I have most of a barrier implementation for aoe done
but got sidetracked. I'd welcome any volunteers who
would like to do testing. Please email me directly.
--
Ed Cashin <ecashin@coraid.com>
next prev parent reply other threads:[~2010-03-03 15:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-03 4:11 aoeblk_make_request() chokes on zero-length barriers Tejun Heo
2010-03-03 15:30 ` Ed Cashin [this message]
2010-03-03 15:56 ` Tejun Heo
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=20100303153015.GD3268@coraid.com \
--to=ecashin@coraid.com \
--cc=linux-kernel@vger.kernel.org \
--cc=taeuber@bbaw.de \
--cc=tj@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.