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Replacing LUN's

Jbandersonjr
Occasional Contributor

Replacing LUN's

The standard was 36 GB now it is 100GB.  When a new LUN is assigned if it is a new LUN trunk it appears as 100GB but if it is replacing one of the 36GB LUNs that have been removed the Host can only find 36GB while the SAN finds 100GB.  How can I force the HPUX 11.2 & 11.3 hosts to see the full 100GB?  I know I a few years ago when I moved from 8GB to 36GB I used a command that forced the host to see any disk replacement as a new disk and read the disk/LUN  I just don't remember how to do it anymore.  Does anybody know how to accomplish this other than the work around of creating multiple smaller LUNS to replace the old 36GB LUNs forcing the new LUNS to attach to a virgin trunk?

2 REPLIES
Viktor Balogh
Honored Contributor

Re: Replacing LUN's

Do you mean the vgmodify command?

 

# man 1m vgmodify

 

...

vgmodify(1M) vgmodify(1M)


NAME


vgmodify - handle physical volume size changes and modify configuration parameters of an existing LVM
volume group

....

****
Unix operates with beer.
Viktor Balogh
Honored Contributor

Re: Replacing LUN's

For replacing a LUN with a new one you can use the "scsi_mgr replace_wwid" command.

****
Unix operates with beer.