I am still having trouble with a RAID configuration from Infortrend.
I have a couple of logical drives defined and several partions on
one of the logical drives. These are assigned to SCSI ID numbers so
each one should look to the computer as a separate scsi drive
(separate nexus). At the hardware level (>>>) this is the case and
it was the case under DU 4.0F.
With TU 5.0, however, all of these end up under a single HWID.
(An example of the hwmgr command output is appended to demonstrate.)
(None of this is in a clustered environment.)
>From the System Admin guide:
Ideally, the WWID for a device is unique, enabling the
identification of every SCSI device attached to the system.
However, some legacy devices (and even some new devices
available from third-party vendors) do not provide the
information required to create a unique WWID for a specific
device. For such devices, the operating system will attempt to
generate a WWID, and in the exteme [sic] case will use the
device nexus (the SCSI bus/target/lun) to create a WWID for the
device.
If the extreme case were occurring, then a WWID and thus new HWID
would be expected for each partition and/or logical drive.
However, all partitions of logical drives and second logical drives
all go under a single HWID and I cannot figure out how to access
or name the "other paths".
I haven't found any information in the manuals/documentation on
having more than one path under a HWID.
I would like to find some way of getting each nexus under its own
HWID number or find some way of addressing the other-than-first nexus
within the single HWID.
Any pointers or solutions of any kind would be appreciated.
(Without success, I have tried scanning for one nexus, using:
hwmgr -edit scsi -did 9 -uwwid "ift 3-0-0"
to try and set a new WWID, and then scanning for the next nexus.
It still put the second one in as a new path in the same HWID.)
thanks,
-mike
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Michael A. Crowley Director of Networking
mcrowley_at_mtholyoke.edu 216 Dwight Hall, Mount Holyoke College
413-538-2140 fax: 413-538-2331 South Hadley, MA 01075-6415
http://www.mtholyoke.edu/~mcrowley http://www.mtholyoke.edu/lits/network
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---------- Forwarded message ----------
Date: Tue, 15 Feb 2000 16:52:36 -0500 (EST)
From: Michael A. Crowley <mcrowley_at_MtHolyoke.edu>
To: net_at_MtHolyoke.edu
Subject: hwmgr
hwmgr -show scsi -did 9 -full
SCSI DEVICE DEVICE DRIVER NUM DEVICE FIRST
HWID: DEVICEID HOSTNAME TYPE SUBTYPE OWNER PATH FILE VALID PATH
-------------------------------------------------------------------------
88: 9 coral disk none 0 5 dsk12 [3/0/0]
WWID:04100028:"IFT 3102 002F101D"
BUS TARGET LUN PATH STATE
------------------------------
3 0 0 valid
3 1 0 valid
3 2 0 valid
3 3 0 valid
3 4 0 unknown
Received on Wed Feb 16 2000 - 21:14:44 NZDT