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2010-08-06

HDLM remove LUN or offlined path to a given LUN - Categories: Life - pidiaquez @ 14:43:49

In order to completly remove a LUN , first offline all paths, the run the following command


	dlmcfgmgr -u /dev/sddlmab

Same instruction is used to remove all offlined path to a LUN and update LUNs with paths pointing to no device " - "

grep for numbers - Categories: Life - pidiaquez @ 13:34:38

grep for lines containing numbers , with the exception of those who have a slash

egrep [0123456789] month | grep -v "/" | grep -v A | tr -d .

Linux RDAC Multipath driver check multipath - Categories: Life - pidiaquez @ 16:15:12

To check LUN status on a linux with RDAC multipath instaled

do:

mppUtil -S

and check

/proc/mpp

directory structure

Upgrade RedHat 4.5 to RedHat 5.4 - Categories: Life - pidiaquez @ 12:33:04

I tried to upgrade from the 5.4 DVD, however it didn't gave me the "upgrade option"

googled for a while and found the following "secret word" that enabled the upgrade option.

I used the following parameter during the boot.

linux upgradeany

HDLM on linux Check Paths - Categories: Techs - pidiaquez @ 12:03:10

To check paths to the LUNs

/opt/DynamicLinkManager/bin/dlnkmgr view -path

To install HDLM driver if you have the license file .plk

Copy the .plk license file to /var/tmp/hdlm_license and install hdlm