Error in Voting/OCR disk during CRS installation

My CRS installation story is still continuing, as soon as i get some error, a new blog post is ready :)

now during CRS installation in the screen where you have to supply Voting/OCR disk you might get following error i.e.

The specified shared raw partition /dev/rdsk/ora_ocr_raw_280m may not have correct permission. Verify that the partition is owned by Oracle User.

and when you check your disk's permission, it is telling you something else !

$ls -ltr /dev/rdsk/ora_ocr_raw_280m
crw-rw---- 1 oracle oinstall 85, 8194 Sep 6 08:51 /dev/rdsk/ora_ocr_raw_280m

does it mean the permission is correctly set ? NO NOT YET ;)

you need to check the permission of actual device ! i.e.

# ls -ltr ../../devices/scsi_vhci/ssd@g50060e800000000000005ba500000020:a,raw
crw-r----- 1 root sys 118, 504 Aug 28 16:35 ../../devices/scsi_vhci/ssd@g50060e800000000000005ba500000020:a,raw

so from here you can see that the actual device is owned by root:sys which is causing this permission error...you need to change the permission of actual device to oracle:oinstall. i.e.

#chown -R -h oracle:oinstall ../../devices/scsi_vhci/ssd@g50060e800000000000005ba500000020:a,raw

# ls -ltr ../../devices/scsi_vhci/ssd@g50060e800000000000005ba500000020:a,raw

crw-r----- 1 oracle oinstall 118, 504 Sep 4 14:55 ../../devices/scsi_vhci/ssd@g50060e800000000000005ba500000020:a,raw


NOTE: in both voting & ocr you should use slice 0 of the disk.

cheers