From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7 Description of problem: devlabel was failing to add symlinks to both of multipathed devices, but didnt, and I found this issue during troubleshooting: devlabel should print the similar UUID/Page 80 identifiers for multipathed devices when queried with printid option. In this case, devlabel showed different outputs when the two paths to the same device where queried. devlabel calls scsi_unique_id, and in this scsi_unique_id is showing different page80 identifiers when I queried those devices. I've uploaded the details at this URL : http://evuraan.blogspot.com/2005/09/devlabel-shows-different-page80.html Version-Release number of selected component (if applicable): devlabel: 0.48.03 How reproducible: Always Steps to Reproduce: 1.Create multipathed devices 2.Query using "devlabel printid -d $DEV1 and devlabel printid -d $DEV2 3.Or, query your alt paths using scsi_unique_id $DEV1 and scsi_unique_id $DEV2 Actual Results: Attached scsi disk sdb at scsi0, channel 0, id 0, lun 2 Attached scsi disk sdg at scsi1, channel 0, id 0, lun 2 sdb and sdg are alt paths to the same device. Querying using devlabel gave: # devlabel printid -d /dev/sdb S80:373031303731303231303330EMCSYMMETRIX # devlabel printid -d /dev/sdg S80:373031303731303231333031EMCSYMMETRIX They are being treated as two different devices. Expected Results: Their page80 identifiers should have been the same like this o/p from a different machine (where sdv and sdk are the alt devices) # devlabel printid -d /dev/sdv S80:373230393737363534303030EMCSYMMETRIX # devlabel printid -d /dev/sdk S80:373230393737363534303030EMCSYMMETRIX # scsi_unique_id /dev/sdv model: EMC SYMMETRIX page80: 373230393737363534303030 page83 type6: 00018772097753594d363534... # scsi_unique_id /dev/sdk model: EMC SYMMETRIX page80: 373230393737363534303030 page83 type6: 00018772097753594d363534.... Additional info: I've uploaded the same info at http://evuraan.blogspot.com/2005/09/devlabel-shows-different-page80.html
C-bit of Symmetrix was turned off, and hence this problem.