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Full Discussion: Scan and create file systems in new LUNs
Operating Systems Linux Ubuntu Scan and create file systems in new LUNs Post 302956337 by fretagi on Tuesday 29th of September 2015 05:52:44 AM
Old 09-29-2015
Scan and create file systems in new LUNs
Hi

I have a system running
Code:
 uname -a
Linux cmoveldb02 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

and I was told by the NetApp Admin that he has provided 5 LUNs of 1Tb, 200Gb and remaining 3 of 300Gb, but I am not able to see the new LUNs.
I have type the following:
Code:
root@cmoveldb02:~# ls /dev/sd*
/dev/sda  /dev/sda1  /dev/sda2  /dev/sda5

them rebooted the system, after run the same command ls, which provided me with same results as above.

them checking on google, I found the following steps:
Code:
root@cmoveldb02:/var/log# fdisk -l 2>/dev/null | egrep '^Disk' | egrep -v 'dm-' | wc -l
6
root@cmoveldb02:/var/log#

them:
Code:
root@cmoveldb02:/var/log# ls /sys/class/fc_host
host11  host9
root@cmoveldb02:/var/log#

them:

Code:
root@cmoveldb02:/var/log# echo "1" > /sys/class/fc_host/host9/issue_lip
root@cmoveldb02:/var/log# echo "1" > /sys/class/fc_host/host11/issue_lip
root@cmoveldb02:/var/log#

Nothing appears to happen, them:

Code:
root@cmoveldb02:/var/log# fdisk -l 2>/dev/null | egrep '^Disk' | egrep -v 'dm-' | wc -l
6
root@cmoveldb02:/var/log#

so it still showing the same disks.....

Please can you help?
 

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LEARN ABOUT DEBIAN

rescan-scsi-bus

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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