From: Steve Ralston <sjralston1@cox.net>
To: "Qi, Yanling" <yqi@lsil.com>
Cc: 'linux-scsi-reflector' <linux-scsi@vger.kernel.org>
Subject: Re: An array failover driver
Date: Thu, 19 Dec 2002 16:24:32 -0600 [thread overview]
Message-ID: <3E024720.1030005@cox.net> (raw)
In-Reply-To: EB1DF7EA0D32D611B79C0002A51363F194A7BE@exw-ks.ks.lsil.com
On 12/19/2002 03:56 PM, Qi, Yanling wrote:
>Hi All,
>
>I am going to develop a multiple-pathing driver to support our storage array
>hardware on Linux(2.4 and later). I prefer the driver sit on the top of HBA
>drivers (fibre channel adapter drivers) and below middle level (the unifying
>layer). In other words, insert my pseudo driver into middle level and lower
>level drivers. The driver will take care of path failover. I am still in
>research phase. Do you have any suggestions?
>
>
I've been there & done that, for drivers/message/fusion drivers (aka for
FC9x9 HABs).
The dynamic multi-pathing failover driver I wrote acted as sort of a shim,
sitting logically between the scsi midlayer and {mptbase+mptscsih}
driver(s),
sort of exactly as you describe above. The source is available via:
ftp://ftp.lsil.com/pub/symchips/fibre_ch/Metastor/dmpath-2.01x25.tar.gz
Which HBA driver are you looking at doing this for?
prev parent reply other threads:[~2002-12-19 22:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-19 21:56 An array failover driver Qi, Yanling
2002-12-19 22:17 ` Steven Dake
2002-12-19 22:24 ` Steve Ralston [this message]
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