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This clone is for dealing with

# blkid -po udev /dev/sdX

not returning anything for some partitions.

I'm able to reproduce the problem on scsi_debug with sun label.

Device      Start     End Sectors   Size Id Type         Flags
/dev/sdc1       0  920753  920754 449.6M 83 Linux native      
/dev/sdc2  920754 1023059  102306    50M 82 Linux swap      u 
/dev/sdc3       0 1023059 1023060 499.6M  5 Whole disk        

fedora 22:

# blkid -po udev /dev/sdc2
ID_PART_ENTRY_SCHEME=sun
ID_PART_ENTRY_TYPE=0x82
ID_PART_ENTRY_FLAGS=0x1
ID_PART_ENTRY_NUMBER=2
ID_PART_ENTRY_OFFSET=920754
ID_PART_ENTRY_SIZE=102306
ID_PART_ENTRY_DISK=8:32

rhel7:
# blkid -po udev /dev/sdc2
<nothing>

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2093.html

*** Bug 1299589 has been marked as a duplicate of this bug. ***