From: Christoph Hellwig <hch@infradead.org>
To: Frederic TEMPORELLI <frederic.temporelli@ext.bull.net>
Cc: linux-scsi@vger.kernel.org
Subject: Re: increase SD_STATS ?
Date: Fri, 19 Aug 2005 10:27:11 +0100 [thread overview]
Message-ID: <20050819092711.GA28752@infradead.org> (raw)
In-Reply-To: <43059223.4020205@ext.bull.net>
On Fri, Aug 19, 2005 at 10:02:43AM +0200, Frederic TEMPORELLI wrote:
> Hi,
>
>
> Due to SD_STATS=256 (/drivers/scsi/sd.c)
> there's a limit on the max /dev/sd devices.
>
> Now, we have a large FC fabric, with more than 3500 LUNs...
> => Of course, we have an Oops when an HBA is connected to the fabric
> (still sd.c, BUG in function sd_iostats_bump when sd>SD_STATS)
>
> What (bad) side-effects can be expected if we increase SD_STATS (4096
> should be nice, may be 8192) ?
>From you description it looks like you are using some odd 2.4.x vendor
tree. Just upgrade to latest 2.6 and these limitations will go away.
next prev parent reply other threads:[~2005-08-19 9:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-19 8:02 increase SD_STATS ? Frederic TEMPORELLI
2005-08-19 9:27 ` Christoph Hellwig [this message]
2005-08-19 10:20 ` Frederic TEMPORELLI
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