From: Ravi Shankar <ravi.v.shankar@oracle.com>
Cc: "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>
Subject: Re: mpt2sas: /sysfs sas_address entries do not show individual port sas addresses.
Date: Thu, 18 Aug 2011 10:57:51 -0700 [thread overview]
Message-ID: <4E4D529F.9090908@oracle.com> (raw)
In-Reply-To: <4E4BDFD7.3060109@interlog.com>
>
>
> Do you know a reason why it is not preferably for every
> phy on a SAS HBA to respond with the same SAS address?
>
>
> As a practical matter a SAS HBA needs a single SAS address,
> preferably printed on the board or its box. Then if you
> manage to wipe its SAS address (e.g. by erasing its flash
> to move from IR to IT firmware) then you know which SAS
> address to re-instate :-)
>
HBA SAS phy could have same SAS address when they are directly connected.
however when connected to expanders, each logical port/phy need unique SAS
address.
next prev parent reply other threads:[~2011-08-18 17:58 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-17 10:42 mpt2sas: /sysfs sas_address entries do not show individual port sas addresses Benjamin ESTRABAUD
2011-08-17 15:35 ` Douglas Gilbert
2011-08-17 15:50 ` Benjamin ESTRABAUD
2011-08-18 17:57 ` Ravi Shankar [this message]
2011-08-18 19:52 ` Douglas Gilbert
2011-08-19 12:30 ` Benjamin ESTRABAUD
2011-08-19 14:58 ` Douglas Gilbert
2011-08-19 17:49 ` Benjamin ESTRABAUD
2011-08-19 19:06 ` Ravi Shankar
2011-08-21 1:05 ` Douglas Gilbert
2011-08-23 19:39 ` Ravi Shankar
2011-08-24 14:12 ` Benjamin ESTRABAUD
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