linux-kernel - Re: 3Ware delayed device mounting errors with newer 9500 series adapters

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Message-Id: <20061021233904.c2f40a5f.akpm@osdl.org>
Date:	Sat, 21 Oct 2006 23:39:04 -0700
From:	Andrew Morton <akpm@...l.org>
To:	"Jeffrey V. Merkey" <jmerkey@...fmountaingroup.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>, linuxraid@...c.com,
	linux-scsi@...r.kernel.org
Subject: Re: 3Ware delayed device mounting errors with newer 9500 series
 adapters

On Sat, 21 Oct 2006 11:03:10 -0600
"Jeffrey V. Merkey" <jmerkey@...fmountaingroup.com> wrote:

> 
> Adam,
> 
> We have been getting 3Ware 9500 series adapters in the past 60 days 
> which exhibit a delayed behavior during mounting of FS from
> /etc/fstab.   The adapters older than this do not exhibit this behavior. 
> 
> During bootup, if the driver is compiled as a module rather than in 
> kernel, mount points such as /var in fstab fail to detect the devices
> until the system fully boots, at which point the /dev/sdb etc. devices 
> showup.  It happens on both ATA cabled drives and drives
> cabled with multi-lane controller backplanes.
> 
> The problem is easy to reproduce.  Install ES4, point the /var directory 
> during install to one of the array devices in disk druid, and after
> the install completes, /var/ will not mount during bootup and all sorts 
> of errors stream off the screen.  I can reproduce the problem
> with several systems in our labs and upon investigating the adapter 
> revisions, I find that adapters ordered in the past 60 days exhibit
> the problem.   Compiling the driver in kernel gets around the problem, 
> indicating its timing related.
> 

cc's added.
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