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2010-08-06

Permalink 14:43:49, Categories: Life, 42 words   English (EU)

HDLM remove LUN or offlined path to a given LUN

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 " - "

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2010-06-04

Permalink 13:34:38, Categories: Life, 23 words   English (EU)

grep for numbers

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

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

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2010-03-15

Permalink 16:15:12, Categories: Life, 20 words   English (EU)

Linux RDAC Multipath driver check multipath

To check LUN status on a linux with RDAC multipath instaled

do:

mppUtil -S

and check

/proc/mpp

directory structure

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2010-03-12

Permalink 12:33:04, Categories: Life, 40 words   English (EU)

Upgrade RedHat 4.5 to RedHat 5.4

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

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2009-11-02

Permalink 12:03:10, Categories: Techs, 36 words   English (EU)

HDLM on linux Check Paths

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

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