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.
next prev parent reply other threads:[~2004-08-11 16:44 UTC|newest]
Thread overview: 41+ 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
2004-08-10 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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