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Date: Sun, 20 May 2007 16:25:03 -0600
From: Robert Hancock <hancockr@shaw.ca>
Subject: Re: sd_resume redundant?  [was: [PATCH] libata: implement
 ata_wait_after_reset()]
In-reply-to: <20070520115353.4428a735.randy.dunlap@oracle.com>
To: Randy Dunlap <randy.dunlap@oracle.com>
Cc: ide <linux-ide@vger.kernel.org>, Indan Zupancic <indan@nul.nu>,
       linux-kernel <linux-kernel@vger.kernel.org>,
       Tejun Heo <htejun@gmail.com>
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Randy Dunlap wrote:
> On Sun, 20 May 2007 11:45:03 -0600 Robert Hancock wrote:
> 
>> Indan Zupancic wrote:
>>>>> Everything seems to work fine without sd_resume(), so why is it needed?
>>>> Because not all disks spin up without being told to do so and like it or
>>>> not spinning disks up on resume is the default behavior.  As I wrote in
>>>> the other reply, it would be worthwhile to make it configurable.
>>> Not even after they receive a read command? Ugh.
>> ATA disks are supposed to spin up, yes. SCSI disks require a command to 
>> tell them to spin up if they're in the "stopped" state.
> 
> Good info, but linux-ide was dropped.  Is that due to lack of
> reply-to-all or is it a newsgroup thing or what?

That would be a newsgroup thing. It seems that sometimes CCs get dropped 
when the posts are forwarded to fa.linux.kernel where I normally read them.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/