From: Tejun Heo <htejun@gmail.com>
To: Jose Alberto Reguero <jareguero@telefonica.net>
Cc: linux-ide@vger.kernel.org
Subject: Re: Problem with ahci and a external sata disk
Date: Sun, 09 Mar 2008 14:17:12 +0900 [thread overview]
Message-ID: <47D372D8.2010708@gmail.com> (raw)
In-Reply-To: <200803080220.20565.jareguero@telefonica.net>
Jose Alberto Reguero wrote:
> [root@jar Pls]# hdparm -I /dev/sdd
>
> /dev/sdd:
>
> ATA device, with non-removable media
> Model Number: ST3750640AS
> Serial Number: 5QD3Q2AZ
> Firmware Revision: 3.AFM
>
> How can be so diferent that the one make with esata?
That's because your enclosure is emulating IDENTIFY command when
attached via SATA. It's emulating USB mass storage device when
connected via USB but your enclosure is good enough to implement ATA
command passthrough and as hdparm issues IDENTIFY using command
passthrough, it gets to the actual drive and returns the result directly.
--
tejun
next prev parent reply other threads:[~2008-03-09 5:17 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-19 15:46 Problem with ahci and a external sata disk Jose Alberto Reguero
2008-03-06 7:53 ` Tejun Heo
2008-03-07 13:03 ` Jose Alberto Reguero
2008-03-07 14:15 ` Jose Alberto Reguero
2008-03-07 22:33 ` Jose Alberto Reguero
2008-03-08 0:42 ` Tejun Heo
2008-03-08 10:03 ` Jose Alberto Reguero
2008-03-08 1:20 ` Jose Alberto Reguero
2008-03-09 5:17 ` Tejun Heo [this message]
2008-03-10 19:26 ` Mark Lord
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