Same EMC LUNs with different SCSI device names on different systems
Sorry if this is the wrong forum, but 'Storage' seemed more hardware-oriented.
I have RHEL 5.3 on 3 servers running Oracle RAC clusterware. Qlogic HBAs to EMC Clariion using powerpath.
Presented 1 new LUN in Storage Group visible to all servers. Server RAC03, ran Qlogic scan, then 'powermt config', and 'fdisk emcpowerAA'. Repeated these steps individually for 5 more LUNs.
Now all 6 LUNs are visible (in the EMC Storage Group) to all 3 servers, but not defined on RAC01 and RAC02. I ran the Qlogic scan on 01 and 02, and the /dev/sdXX names are assigned 'down' instead of 'across':