Sharing lun between 2 LPAR


 
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Operating Systems AIX Sharing lun between 2 LPAR
# 1  
Old 12-07-2011
Question Sharing lun between 2 LPAR

Hi,

I would like to know how to share lun in between 2 lpars.

I have run tbe below command on vio server.

Code:
/usr/sbin/chdev -l hdisk1 -a reserve_policy=no_reserve

after above command I am able to assign lun on one Lpar. but it is not visible to other lpar.
even after this I have run the command
Code:
usr/sbin/chdev -l hdisk1 -a reserve_policy=no_reserve

on lpar on which it was visible.

wheather any other configuration needs to be done.

Moderator's Comments:
Mod Comment Please use code tags! You have 169 posts and still not able or too lazy to use them? Come on...

Last edited by zaxxon; 12-07-2011 at 03:36 AM.. Reason: code tags, see PM
# 2  
Old 12-07-2011
sharing lun between 2 LPAR

Hi

Is it HACMP or GPFS ?
# 3  
Old 12-07-2011
you map the lun to another lpar on the same vio?

then you need the -f flag with mkvdev

Code:
       -f
            Force the physical volume specified to be used as a backing device even if its already associated with a virtual SCSI adapter. If the specified backing device is an optical device, -f forces the optical device will be
            removed from the virtual SCSI adapter it is currently assigned to before reassigning it to the new virtual SCSI adapter.

# 4  
Old 12-08-2011
Hi,

There is another way you can create shared fcs as ehternet on VIO. Then your each lpar will have a fcs card and a wwn number, just mapp the wwn nuber of both laprs to the same lun on san and create a concurrent lv.

Regards

vjm
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