linux-kernel - Re: sd_resume redundant? [was: [PATCH] libata: implement ata_wait_after

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Message-Id: <20070520115353.4428a735.randy.dunlap@oracle.com>
Date:	Sun, 20 May 2007 11:53:53 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Robert Hancock <hancockr@...w.ca>, ide <linux-ide@...r.kernel.org>
Cc:	Indan Zupancic <indan@....nu>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Tejun Heo <htejun@...il.com>
Subject: Re: sd_resume redundant?  [was: [PATCH] libata: implement
 ata_wait_after_reset()]

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?


---
~Randy
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