Solved...
Problem : The HP library is unable to find the scsi address from OS end , either the scsi was changed ( or ) the HW / new tape drive was replaced with existing faulty tape drive where the OS is unable to recognized the New HW
Resolution :
issue the “ioscan –fnC tape” to check the tape drives are visible from OS end , you can see some of the tape drives are with “NO_HW” , the OS is not able to recognized the HW ( Hardware ) which is new / replaced.
The SCSIMGR is pointing to the old hardware where the hardware is not existing, we need to replace the WWID ( World wide Identification number ) of newly replace tape drive with existing.
Below error message from syslog.log from location “ /var/adm/syslog “
ieoesh21 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 = 11) The lun path is (class = lunpath, instance 67).Run 'scsimgr replace_wwid' command to validate the change
Below are the new HW paths.
0/0/10/1/0/4/1.0x100000e002437ae1
0/0/10/1/0/4/1.0x100000e002437ae1
( class = tgtpath, instance = 11) The lun path is (class = lunpath, instance 67).Run 'scsimgr replace_wwid' command to validate the change
Issue the below command to replace the WWID with target path with instance 11 as shown in above error
scsimgr -f replace_wwid -C lunpath -I 11
scsimgr -f replace_wwid -C lunpath -I 12
ieoesh21# scsimgr -f replace_wwid -C lunpath -I 11
scsimgr: Successfully validated binding of LUN paths with new LUN.
ieoesh21# scsimgr -f replace_wwid -C lunpath -I 12
From
Chanchal Haldar
hp DP admin