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From: Nathan Bryant <nbryant@optonline.net>
To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, Pavel Machek <pavel@ucw.cz>,
	Linux SCSI Reflector <linux-scsi@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Jeff Garzik <jgarzik@pobox.com>
Subject: Re: [PATCH] SCSI midlayer power management
Date: Wed, 11 Aug 2004 12:43:09 -0400	[thread overview]
Message-ID: <411A4C9D.4040902@optonline.net> (raw)
In-Reply-To: <1092241693.1590.1.camel@mulgrave>

James Bottomley wrote:
> On Wed, 2004-08-11 at 10:21, Alan Cox wrote:
> 
>>In addition we are not doing SCSI target so multi-initiator is ok.
>>One question James - what are the rules for power management with
>>SCSI when we provide termpwr to a shared bus ?

Well there are (at least) two reasons to do shared bus: IP over SCSI and 
cluster filesystems. At least for cluster filesystems I think the answer 
is "don't suspend your machine" for the foreseeable future - what 
happens if your machine goes to sleep while holding cluster FS locks, 
etc. I doubt any CFS vendors are going to bother to support this any 
time soon, since it's a HA/server feature and power management is really 
a desktop/laptop feature.

  reply	other threads:[~2004-08-11 16:43 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-08-10 23:58 [PATCH] SCSI midlayer power management Nathan Bryant
2004-08-11  8:09 ` Pavel Machek
2004-08-11 13:13   ` Nathan Bryant
2004-08-11 13:37     ` James Bottomley
2004-08-11 15:21       ` Alan Cox
2004-08-11 16:28         ` James Bottomley
2004-08-11 16:43           ` Nathan Bryant [this message]
2004-08-11 23:36       ` Benjamin Herrenschmidt
2004-08-12  7:45         ` Pavel Machek
2004-08-12 10:38           ` Benjamin Herrenschmidt
2004-08-12 12:48         ` James Bottomley
2004-08-12 13:14           ` Pavel Machek
2004-08-12 16:29             ` James Bottomley
2004-08-12 19:11               ` Pavel Machek
2004-08-12 19:34                 ` James Bottomley
2004-08-12 20:26                   ` Pavel Machek
2004-08-12 20:31                     ` James Bottomley
2004-08-12 20:37                       ` Pavel Machek
2004-08-12 20:42                         ` James Bottomley
2004-08-12 20:48                           ` Pavel Machek
2004-08-12 20:52                           ` Nathan Bryant
2004-08-12 20:40                       ` Nathan Bryant
2004-08-12 23:05                       ` Benjamin Herrenschmidt
2004-08-12 22:36                   ` Nigel Cunningham
2004-08-12 22:43                     ` Nigel Cunningham
2004-08-12 23:04                   ` Benjamin Herrenschmidt
2004-08-12 13:41           ` Nathan Bryant
2004-08-12 16:45             ` Patrick Mansfield
2004-08-12 23:02           ` Benjamin Herrenschmidt
2004-08-11 20:19     ` Pavel Machek
2004-08-11 20:50       ` Nathan Bryant
2004-08-11 22:16     ` Nigel Cunningham
2004-08-11 22:48       ` Nathan Bryant
2004-08-12  7:43         ` Pavel Machek
2004-08-12  9:39         ` Nigel Cunningham
2004-08-12 13:43           ` Nathan Bryant
  -- strict thread matches above, loose matches on Subject: below --
2004-08-16 13:29 James.Smart
2004-08-16 13:29 ` James.Smart
2004-08-10 23:56 Nathan Bryant
2004-08-11  9:53 ` Alan Cox
2004-08-11 12:55   ` Nathan Bryant
2004-08-11 13:39   ` James Bottomley

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