From: James Stevenson <james@stev.org>
To: Per Andreas Buer <perbu@linpro.no>
Cc: linux-kernel@vger.kernel.org
Subject: Re: iostats broken for devices with major number > DK_MAX_DISK (16)
Date: 12 Nov 2002 23:01:03 +0000 [thread overview]
Message-ID: <1037142064.1570.0.camel@god.stev.org> (raw)
In-Reply-To: <PERBUMSGID-ul64ramh6g5.fsf@nfsd.linpro.no>
On Tue, 2002-11-12 at 20:35, Per Andreas Buer wrote:
> Hi,
>
> sorry for the intrusion. I noticed iostats didn't display statistics for
> devices on Mylex RAID constrollers. Det statistics are completely
> missing in /proc/stat. The reason seems to be an assumption that disks
> have major numbers which are below 16
> (http://lxr.linux.no/source/include/linux/kernel_stat.h#L15) which is
> used by http://lxr.linux.no/source/fs/proc/proc_misc.c#L344.
>
> Devices on Mylex-controllers have major number 48. Would it break
> anything if DK_MAX_MAJOR if set higher (e.g. 64)?
>
> AFAIK this goes for both 2.4 and the 2.5 series.
i have been runing with 2.4.x kernel with this number
set higher i have still yet to see any problem with it
other than using more memory.
next prev parent reply other threads:[~2002-11-12 22:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-12 20:35 Per Andreas Buer
2002-11-12 23:01 ` James Stevenson [this message]
2002-11-12 23:25 ` Cliff White
2002-11-12 23:40 ` James Stevenson
2002-11-12 23:41 ` Rick Lindsley
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