linux-kernel - SCSI vs SATA

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Message-ID: <5d75f4610707230352j69b2ba53g1564e420fc64ea49@mail.gmail.com>
Date:	Mon, 23 Jul 2007 17:52:31 +0700
From:	"BuraphaLinux Server" <buraphalinuxserver@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: SCSI vs SATA

Hello,

    I have had a hard time determining if /dev/sda is SCSI or SATA
from my boot scripts.  It matters for smartd which needs an added
parameter -d sat in the configuration file for SATA drives.  Finally I
came up with this, but I wonder if there is a better way?  It appears
that
vendor is "ATA     " (5 trailing spaces) for SATA.  If the kernel is
ever fixed to show proper vendor information (Maxtor, Seagate,
whatever) then how can I know if /dev/sda is SCSI or SATA from a bash
script?  When flaming me, please also include the proper solution.
Thanks.

#!  /bin/bash
drive="sda"
vendor=$(</sys/block/${drive}/device/vendor)
if [[ "${vendor}" = "ATA     " ]]
then
  printf "SATA\n"
else
  printf "SCSI\n"
fi
exit 0
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