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Message-ID: <45459B10.6080702@gmail.com>
Date: Mon, 30 Oct 2006 15:26:24 +0900
From: Tejun Heo <htejun@gmail.com>
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To: Phillip Susi <psusi@cfl.rr.com>
CC: linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: Background scan of sata drives
References: <453EDF44.3090308@cfl.rr.com>
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Phillip Susi wrote:
> I seem to recall seeing mention flow by on the lkml at some point that 
> sata disks are now scanned in the background rather than blocking in the 
> modprobe, but that there is a new dummy module you can load that just 
> blocks until all drives have been scanned.  I tried but was unable to 
> find the thread that mentioned this, so does anyone know what that 
> module was?

Scanning during boot and module loading is blocking.  modprobe will wait 
in the kernel until the initial scan is complete.  But user initiated 
scan (echo - - - > /sys/class/scsi_host/hostX/scan) doesn't wait for 
completion.  Patch to make user scan blocking is pending.

-- 
tejun
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