linux-kernel - Re: CONFIG_SCSI_WAIT

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Date:	Tue, 27 Mar 2007 11:34:17 -0500
From:	James Bottomley <James.Bottomley@...elEye.com>
To:	Hugh Dickins <hugh@...itas.com>
Cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org
Subject: Re: CONFIG_SCSI_WAIT_SCAN=m

On Tue, 2007-03-27 at 17:25 +0100, Hugh Dickins wrote:
> I'm not using an initrd, most of my kernel is builtin,
> just a few modules for occasional filesystems.
> 
> CONFIG_MODULES=y
> CONFIG_SCSI=y
> CONFIG_SCSI_SCAN_ASYNC=y
> CONFIG_SCSI_WAIT_SCAN=m
> 
> 2.6.21-rc5-mm2 VFS panics unable to find my root on /dev/sda2,
> but boots okay if I change drivers/scsi/Kconfig to "default y"
> instead of "default m" for SCSI_WAIT_SCAN.

Hmm ... it sounds like there's a missing scsi_complete_async_scans() in
your environment?  What's your configuration ... which SCSI drivers, and
which are modules?

scsi_wait_async_scan is supposed to be unnecessary unless you have
modular SCSI drivers that the initrd needs to wait for root on.

James


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