Need help on scsimgr replace_wwid .. what is the use of this.

[sapoguheman]

Hello All,

Issue is i am not able to se few new luns on server.Need some inputs regarding this errors found in the syslog. 

What is the command scsimgr replace_wwid used for ?

Feb  6 13:28:35 ocdbv1 vmunix: class : lunpath, instance 10

Feb  6 13:28:35 ocdbv1 vmunix: Evpd inquiry page 83h/80h failed or the current page 83h/80h data do not match the previous known page 83h/80h data on LUN id 0x0 probed beneath the target path (class = tgtpath, instance = 3) The lun path is (class = lunpath, instance 10).Run 'scsimgr replace_wwid' command to validate the change

Feb  6 13:28:35 ocdbv1 vmunix: class : lunpath, instance 11

Feb  6 13:28:35 ocdbv1 vmunix: Evpd inquiry page 83h/80h failed or the current page 83h/80h data do not match the previous known page 83h/80h data on LUN id 0x0 probed beneath the target path (class = tgtpath, instance = 1) The lun path is (class = lunpath, instance 11).Run 'scsimgr replace_wwid' command to validate the change

Feb  6 13:28:35 ocdbv1 vmunix: class : lunpath, instance 30

Feb  6 13:28:35 ocdbv1 vmunix: Evpd inquiry page 83h/80h failed or the current page 83h/80h data do not match the previous known page 83h/80h data on LUN id 0x0 probed beneath the target path (class = tgtpath, instance = 4) The lun path is (class = lunpath, instance 30).Run 'scsimgr replace_wwid' command to validate the change

Feb  6 13:28:35 ocdbv1 vmunix: class : lunpath, instance 31

Feb  6 13:28:35 ocdbv1 vmunix: Evpd inquiry page 83h/80h failed or the current page 83h/80h data do not match

[karthikbalu · Accepted solution]

This comand should update the lunpath with the new WWID. Run the below command.

scsimgr replace_wwid -C lunpath -I 10

scsimgr replace_wwid -C lunpath -I 11

scsimgr replace_wwid -C lunpath -I 30

scsimgr replace_wwid -C lunpath -I 31

-Karthik Balu.