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Date:      Thu, 06 Oct 2011 08:59:45 -0700
From:      Matthew Jacob <mj@feral.com>
To:        Andrew Boyer <aboyer@averesystems.com>
Cc:        freebsd-scsi@freebsd.org
Subject:   Re: Initialization timeouts in MPT driver
Message-ID:  <4E8DD071.9060705@feral.com>
In-Reply-To: <CDA323AC-295D-4DA8-A8C2-B550664947F3@averesystems.com>

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On 10/6/2011 8:43 AM, Andrew Boyer wrote:
> When using mpt with a 1068e, a bad SATA SSD can prevent all other SATA drives from being recognized.  It takes about 45s for the controller to respond to the IOC initialization request with a bad drive installed, but the timeout for SAS controllers is 30s.

That's one way to do it. But it can fail also.

In my own version of the mpt2 driver, I changed the logic and allowed 
for ioc port initialization to complete at a later time. Dunno what mps 
does (never use it). Perhaps the same thing could be done for mpt. That 
said, this is probably not an unreasonable change.


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