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Operating Systems Linux Red Hat How to Find what HBA is configured on Linux? Post 302505942 by titanic4u on Friday 18th of March 2011 04:36:35 AM
Old 03-18-2011
Here is little info, hope it helps:
(1) how do I know what is the LUN ID.
-> Depands on the driver which you are using.
for example: if using linux native multipathing then "multipath -ll" will show you the Lun & their details.
If using, third party drivers related to SAN:
for example - Rdac/mpp from IBM then u can use mppUtil -a <storage name>, will show u all the details of Luns...

(3) how do I scan for new LUNs.
again if using linux native multipath then run "rescan-scsi-bus.sh" avaialbe from sg3_utils rpm.
If using third party, for example Rdac of IBM: run "mppBusScan" and it will detect the new LUNs.

Hope it helps....

~Titans~
This User Gave Thanks to titanic4u For This Post:
 

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RESCAN-SCSI-BUS.SH(8)					      System Manager's Manual					     RESCAN-SCSI-BUS.SH(8)

NAME
rescan-scsi-bus.sh - rescan the SCSI bus. SYNOPSIS
rescan-scsi-bus.sh [ -l ] [ -w ] [ -c ] [ -r ] [ host... ] DESCRIPTION
rescan-scsi-bus.sh is a program that is used to rescan the SCSI bus using the SCSI add-single-device feature of the Linux SCSI layer. OPTIONS
-l Activates scanning for LUNs 0 .. 7 (default: 0). -L NUM Activates scanning for LUNs 0 .. LUN (default: 0). --luns=LIST Scan only LUNs in LIST. -w Enables scanning for device IDs 0 .. 15 (default: 0 .. 7). --ids=LIST Scan only device IDs in LIST. -i, --issue-lip Issue a FibreChannel LIP reset (default: disabled). -r, --remove Enables removing of devices (default: disabled). --forceremove Remove and readd every device (dangerous). -c Enables scanning of channels 0 1 (default: 0). --channels=LIST Scan only channels in LIST. host, --hosts=LIST If host adapters are given, only these are scanned (default: all). --nooptscan Don't stop looking for LUNs if 0 is not found. --color Use coloured prefixes OLD/NEW/DEL. LIST is a comma separated list of single values and ranges (no spaces allowed), e.g. 0,2-3,8,10-15. AUTHOR
rescan-scsi-bus.sh was written by Kurt Garloff <garloff@suse.de>. COPYRIGHT
This program is free software. You can use it under the terms of the GNU GPL (General Public License) Version 2 (or any later version, at your option). Note, that the GNU GPL implies, that there is NO WARRANTY at all. Full text of the GPL can be found in /usr/share/common- licenses/GPL file. AVAILABILITY
rescan-scsi-bus.sh is available from http://www.garloff.de/kurt/linux/scsidev/ March 1998 RESCAN-SCSI-BUS.SH(8)
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