[CentOS-devel] removing inaffective SAN partitions from the system .....

Jagan Kommineni Jagan.Kommineni at ludwig.edu.au
Mon Apr 19 03:32:23 UTC 2010


Dear All,

     I have installed CentOS release 5.2 (Final). EMC SAN partition is mounted by using EMC Powerpath for resolving multiple paths. I was able write and read data over to SAN partition without any issues.

     Subsequently I have unmounted EMC SAN partition from the system and deleted LUN using Navisphere user interface. After rebooting system, I still see SAN mappings in system.

Here is the affected partition mappings ....

==============================
cat /proc/partitions
==============================
major minor  #blocks  name
   8    16    1048576 sdb
   8    48    1048576 sdd
   8    80    1048576 sdf
   8   112    1048576 sdh
============================


When I try to print information using parted, I am getting the following information ....
=========================================================================================
#parted /dev/sdb
GNU Parted 1.8.1
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print                                                            
Error: Unable to open /dev/sdb - unrecognised disk label.                 
(parted)                      
=============================================

I would like to get rid of partition mappings from the system. Anyone has any solution for this problem please.    

with regards,


Dr. Jagan Kommineni
Ludwig Institute for Cancer Research
Parkville



Dr. Jagan Kommineni
Ludwig Institute for Cancer Research
Parkville



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