From owner-freebsd-scsi@FreeBSD.ORG  Sat Aug 28 15:29:59 2010
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Date: Sat, 28 Aug 2010 07:59:49 -0700
From: Matthew Jacob <mj@feral.com>
Organization: Feral Software
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	Sat, 28 Aug 2010 07:59:54 -0700 (PDT)
Subject: Re: camcontrol rescan all - locks system
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  On 8/28/2010 5:20 AM, Dan Langille wrote:
> Hi,
>
> Running FreeBSD 8.1 stable on this particular box.  I ran a camcontrol 
> devlist and didn't see my external tape library listed.  I powered it 
> up and ran a 'camcontrol rescan all'.  Now the system is froxen.  Not 
> crashed, but nearly frozen.  It responds to pings.  New ssh sessions 
> are  not connecting.  Existing ssh sessions take one command and do 
> not respond.  The console takes my login id, but does not prompt for 
> the password.
>
> I could reboot, but I'm about to go out for a bit and figured I'd ask 
> here and see what happens in my absence.

And more details....?