From: Douglas Gilbert <dougg@torque.net>
To: "Moore, Eric" <Eric.Moore@lsil.com>
Cc: linux-scsi@vger.kernel.org
Subject: Re: [PATCH 2/8] fusion - mptsas, increase discovery timout to 300 seconds
Date: Tue, 17 Jan 2006 13:45:11 +1000 [thread overview]
Message-ID: <43CC6847.8050708@torque.net> (raw)
In-Reply-To: <F331B95B72AFFB4B87467BE1C8E9CF5F1AAC7E@NAMAIL2.ad.lsil.com>
Moore, Eric wrote:
> Increase the port enable timeout only for SAS from 30 to 300 seconds.
> A customer request for the handling large topologies.
Eric,
I have seen various reports concerning SAS HBAs taking
"forever" to initialize/discover (various HBA manufacturers,
various OSes). Perhaps you could enlighten me why these
timeouts need to be so large.
Also if a SAS domain does not contain a fanout expander,
doesn't that limit the domain to around 128 or 256
SCSI devices (sum of scsi initiator and target ports)?
If so, perhaps the timeout could be one of two values,
a larger value if a fanout expander was found in
the most recent discover process.
Doug Gilbert
next prev parent reply other threads:[~2006-01-17 3:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-17 1:53 [PATCH 2/8] fusion - mptsas, increase discovery timout to 300 seconds Moore, Eric
2006-01-17 3:45 ` Douglas Gilbert [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-01-17 16:54 Moore, Eric
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