LKML Archive on
help / color / mirror / Atom feed
From: "adam radford" <>
To: "Matteo Tescione" <>
Subject: Re: max_sectors_kb problem
Date: Thu, 20 Mar 2008 14:45:01 -0800	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Wed, Mar 19, 2008 at 4:55 PM, Matteo Tescione <> wrote:
> Hello Folks,
>  I'm running kernel with the 3ware 9650se 8port in raid10 with 256K
>  of stripesize.
>  The question is: why linux kernel (2.6.24 but it's the same in older
>  kernels) see only 128K as it's max_sectors_kb ?
>  It's limited by max_hw_segments_kb which i think should be 256 with a 256 k
>  stripe.
>  It seems hardcoded somewhere, altough in 3w-9xxx.c i can't find it.
>  I'm running firmware FE9X and driver version
>  Can someone help me?

This is hardcoded in the 3w-9xxx driver to 128k.   The controller firmware
is only guaranteed to work with that size.  If you change it, you may
incur data corruption, hangs, or both.  Hacker beware.


      reply	other threads:[~2008-03-20 22:45 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-20  0:55 Matteo Tescione
2008-03-20 22:45 ` adam radford [this message]

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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \
    --subject='Re: max_sectors_kb problem' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).