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Date: Thu, 15 Nov 2012 08:57:20 -0700 (MST)
From: Warren Block <wblock@wonkity.com>
To: Leslie Jensen <leslie@eskk.nu>
Subject: Re: One disk shown as two in gsmartcontrol
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On Thu, 15 Nov 2012, Leslie Jensen wrote:

>
> I'm configuring smartd on a newly installed system, 9.1-RC3
>
> The message below is in my /var/log/messages
>
>
> Nov 15 14:39:49 blj01 kernel: ada0: <Maxtor 6B300S0 BANC1G10> ATA-7 SATA 1.x 
> dev
> ice
> Nov 15 14:39:49 blj01 kernel: ada0: 150.000MB/s transfers (SATA, UDMA5, PIO 
> 8192
> bytes)
> Nov 15 14:39:49 blj01 kernel: ada0: 286188MB (586114704 512 byte sectors: 16H 
> 63
> S/T 16383C)
> Nov 15 14:39:49 blj01 kernel: ada0: Previously was known as ad18
>
>
> Using the GUI gsmartcontrol shows two disks but it's the same disk shown as 
> ada0 and as ad18.
>
> I use the following string in /usr/local/etc/smartd.conf
>
> /dev/ada0 -a -o on -S on -s (S/../.././11|L/../../6/15) -m name@mail.server
>
>
> Is this normal behaviour?

Yes.  It's a backwards-compatibility thing.