From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: Lukasz Kosewski <lkosewsk@gmail.com>,
linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org,
linux-scsi@vger.kernel.org
Subject: Re: [PATCH 2/3] Add disk hotswap support to libata RESEND #5
Date: Thu, 29 Sep 2005 00:20:51 +0100 [thread overview]
Message-ID: <1127949651.26686.11.camel@localhost.localdomain> (raw)
In-Reply-To: <433AEAAE.2070003@pobox.com>
For PATA the requirements I'm aware of are
- Interface for user to say "am about to swap"
- Interface for user to say "have swapped"
- Must quiesce both master and slave before swap (or one per cable)
- Must reset to PIO_SLOW and then recompute modes for both devices
becuse it is possible that changing one changes the other timings
- The above is true for *unplug* too. A straight unplug may speed up the
other drive!
- Post hotswap need to reconfigure both drives as if from scratch
next prev parent reply other threads:[~2005-09-28 23:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-27 1:01 [PATCH 2/3] Add disk hotswap support to libata RESEND #5 Lukasz Kosewski
2005-09-27 19:42 ` Bernhard C. Schrenk
2005-09-27 21:47 ` Lukasz Kosewski
2005-09-28 19:10 ` Jeff Garzik
2005-09-28 23:20 ` Alan Cox [this message]
2005-10-03 15:19 ` Lukasz Kosewski
2005-10-03 15:53 ` Jeff Garzik
2005-10-03 16:09 ` Alan Cox
2005-10-03 14:30 ` Lukasz Kosewski
2005-10-03 15:47 ` Jeff Garzik
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