Storage Foundation for Oracle® RAC 8.0.2 Administrator's Guide - Solaris

Shared disks not visible in SF Oracle RAC cluster

If the shared disks in /dev/rdsk are not visible, perform the following tasks:

Make sure that all shared LUNs are discovered by the HBA and SCSI layer. This can be verified by running the ls -ltr command on any of the disks under /dev/rdsk/*.

For example:

# ls -ltr /dev/rdsk/disk_name
lrwxrwxrwx   1 root     root          81 Aug 18 11:58 
c2t5006016141E02D28d4s2 
-> ../../devices/pci@7c0/pci@0/pci@8/SUNW,qlc@0/fp@0,
0/ssd@w5006016141e02d28,4:c,raw
lrwxrwxrwx   1 root     root          81 Aug 18 11:58 
c2t5006016141E02D28d3s2 
-> ../../devices/pci@7c0/pci@0/pci@8/SUNW,qlc@0/fp@0,
0/ssd@w5006016141e02d28,3:c,raw
lrwxrwxrwx   1 root     root          81 Aug 18 11:58 
c2t5006016141E02D28d2s2 
-> ../../devices/pci@7c0/pci@0/pci@8/SUNW,qlc@0/fp@0,
0/ssd@w5006016141e02d28,2:c,raw
lrwxrwxrwx   1 root     root          81 Aug 18 11:58 
c2t5006016141E02D28d1s2 
-> ../../devices/pci@7c0/pci@0/pci@8/SUNW,qlc@0/fp@0,
0/ssd@w5006016141e02d28,1:c,raw

If all LUNs are not discovered by SCSI, the problem might be corrected by specifying dev_flags or default_dev_flags and max_luns parameters for the SCSI driver.

If the LUNs are not visible in /dev/rdsk/* files, it may indicate a problem with SAN configuration or zoning.

Perform the following additional steps: