From: Luben Tuikov <luben_tuikov@adaptec.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>,
Sergey Panov <sipan@sipan.org>,
Stefan Richter <stefanr@s5r6.in-berlin.de>,
linux-scsi@vger.kernel.org,
Linux Kernel <linux-kernel@vger.kernel.org>,
Jeff Garzik <jgarzik@pobox.com>,
andrew.patterson@hp.com, Christoph Hellwig <hch@lst.de>,
"Moore, Eric Dean" <Eric.Moore@lsil.com>,
jejb@steeleye.com, Linus Torvalds <torvalds@osdl.org>
Subject: Re: ioctls, etc. (was Re: [PATCH 1/4] sas: add flag for locally attached PHYs)
Date: Mon, 24 Oct 2005 11:14:34 -0400 [thread overview]
Message-ID: <435CFA5A.2030104@adaptec.com> (raw)
In-Reply-To: <1130168495.12873.27.camel@localhost.localdomain>
On 10/24/05 11:41, Alan Cox wrote:
> On Llu, 2005-10-24 at 09:51 -0400, Luben Tuikov wrote:
>
>>controls and how. Understanding how the factory workers use it and what
>>they expect. Understanding the code (which may not be as easy). Then it
>>is rewritten so that it can be easily supported and maintained.
>
>
> Very very rarely, because it means down time and supporting two systems
> at once. Take a look at the australian customs fiasco or the british
> passport office disaster to see why (actually almost any large
> government IT project where politics dictated 'write new stuff so I can
> announce it in parliament').
>
> The smart factory update would occur piece by piece. Starting with the
> most pressing problems (ie fastest ROI) and working to a plan that ends
> up with the system modular and clean.
>
> You don't turn a steel plant off for a software upgrade.
There was 0 (zero) effective downtime to the factory.
Luben
--
http://linux.adaptec.com/sas/
http://www.adaptec.com/sas/
next prev parent reply other threads:[~2005-10-24 15:14 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <91888D455306F94EBD4D168954A9457C048F0E34@nacos172.co.lsil.com>
[not found] ` <20051020160155.GA14296@lst.de>
[not found] ` <4357CB03.4020400@adaptec.com>
[not found] ` <20051020170330.GA16458@lst.de>
[not found] ` <4357F7DE.7050004@adaptec.com>
[not found] ` <1129852879.30258.137.camel@bluto.andrew>
2005-10-21 0:46 ` ioctls, etc. (was Re: [PATCH 1/4] sas: add flag for locally attached PHYs) Jeff Garzik
2005-10-21 5:09 ` Mike Christie
2005-10-21 5:41 ` Douglas Gilbert
2005-10-21 6:19 ` Jeff Garzik
2005-10-21 18:37 ` Luben Tuikov
2005-10-21 17:48 ` Luben Tuikov
2005-10-21 18:04 ` Christoph Hellwig
2005-10-21 18:12 ` Luben Tuikov
2005-10-21 18:20 ` Matthew Wilcox
2005-10-22 2:30 ` Douglas Gilbert
2005-10-22 2:54 ` Jeff Garzik
2005-10-22 3:53 ` Jeff Garzik
2005-10-22 17:14 ` Luben Tuikov
2005-10-22 17:49 ` Francois Romieu
2005-10-22 16:51 ` Luben Tuikov
2005-10-21 18:18 ` Jeff Garzik
2005-10-21 18:50 ` Luben Tuikov
2005-10-21 18:54 ` Jeff Garzik
2005-10-21 19:13 ` Luben Tuikov
2005-10-21 19:23 ` Jeff Garzik
2005-10-21 22:20 ` Stefan Richter
2005-10-21 19:22 ` Luben Tuikov
2005-10-21 19:39 ` Jeff Garzik
2005-10-21 20:41 ` Luben Tuikov
2005-10-21 21:12 ` Jeff Garzik
2005-10-21 21:24 ` Luben Tuikov
2005-10-21 21:41 ` Jeff Garzik
2005-10-21 22:14 ` Luben Tuikov
2005-10-21 22:43 ` Jeff Garzik
2005-10-22 9:26 ` Stefan Richter
2005-10-22 17:23 ` Luben Tuikov
2005-10-22 10:42 ` Stefan Richter
2005-10-22 10:58 ` Christoph Hellwig
2005-10-22 15:28 ` Sergey Panov
2005-10-22 17:19 ` Christoph Hellwig
2005-10-22 17:38 ` Sergey Panov
2005-10-24 15:18 ` Luben Tuikov
2005-10-22 18:27 ` Alan Cox
2005-10-24 13:51 ` Luben Tuikov
2005-10-24 15:41 ` Alan Cox
2005-10-24 15:14 ` Luben Tuikov [this message]
2005-10-24 15:59 ` Regala
2005-10-24 16:13 ` Luben Tuikov
2005-10-22 17:30 ` Luben Tuikov
2005-10-22 18:19 ` Jeff Garzik
2005-10-22 17:49 ` Stefan Richter
2005-10-24 22:09 ` ioctls, etc. (was Re: [PATCH 1/4] sas: add flag for locally attachedPHYs) David Lang
2005-10-24 23:09 ` Stefan Richter
2005-10-22 11:12 ` David Lang
2005-10-22 17:39 ` Luben Tuikov
2005-10-22 17:41 ` Stefan Richter
2005-10-22 17:51 ` Christoph Hellwig
2005-10-22 18:21 ` Stefan Richter
2005-10-22 18:39 ` Sergey Panov
2005-10-22 13:27 ` ioctls, etc. (was Re: [PATCH 1/4] sas: add flag for locally attached PHYs) Stefan Richter
2005-10-22 16:09 ` Luben Tuikov
2005-10-21 19:41 ` Matthew Wilcox
2005-10-21 19:48 ` Luben Tuikov
2005-10-21 19:54 ` Matthew Wilcox
2005-10-21 20:05 ` Luben Tuikov
2005-10-21 19:46 ` Arjan van de Ven
2005-10-21 19:50 ` Luben Tuikov
2005-10-21 20:31 Salyzyn, Mark
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