KFED-00322: invalid content encountered during block traversal:

KFED-00322: invalid content encountered during block traversal: [kfbtTraverseBlock][Invalid OSM block type][][0]

$kfed read AFD:TEST01
kfbh.endian:                          0 ; 0x000: 0x00
kfbh.hard:                            0 ; 0x001: 0x00
kfbh.type:                            0 ; 0x002: KFBTYP_INVALID
kfbh.datfmt:                          0 ; 0x003: 0x00
kfbh.block.blk:                       0 ; 0x004: blk=0
kfbh.block.obj:                       0 ; 0x008: file=0
kfbh.check:                   240973086 ; 0x00c: 0x0e5cf51e
kfbh.fcn.base:                        0 ; 0x010: 0x00000000
kfbh.fcn.wrap:                        0 ; 0x014: 0x00000000
kfbh.spare1:                          0 ; 0x018: 0x00000000
kfbh.spare2:                          0 ; 0x01c: 0x00000000
000000000 00000000 00000000 00000000 0E5CF51E [..............\.]
000000010 00000000 00000000 00000000 00000000 [................]
000000020 4C43524F 4B534944 54534554 00003130 [ORCLDISKTEST01..]
000000030 00000000 00000000 00000000 00000000 [................]
        Repeat 14 times
000000120 00000000 00000000 0601A8C0 5B1E32B1 [.............2.[]
000000130 00000000 00000000 00000000 00000000 [................]
Repeat 236 times
KFED-00322: invalid content encountered during block traversal: [kfbtTraverseBlock][Invalid OSM block type][][0]

Reason

Trying to read a disk device using KFED, which was/is never part of an ASM diskgroup

Solution: KFED can read only disk device which is/was part of an ASM diskgroup.
Add the disk to ASM Diskgroup and read the disk device using KFED
$asmcmd afd_lsdsk |grep TEST01
TEST01 ENABLED /dev/xvdj
Now lets add the disk in a diskgroup and then try to read it using KFED
$asmca -silent -createDiskGroup -diskGroupName DG_TEST -diskList AFD:TEST01 -redundancy EXTERNAL
Disk groups created successfully. Check /u01/oragrid/oraBase/cfgtoollogs/asmca/asmca-180611AM104623.log for details.
$kfed read AFD:TEST01

kfbh.endian:                          1 ; 0x000: 0x01
kfbh.hard:                          130 ; 0x001: 0x82
kfbh.type:                            1 ; 0x002: KFBTYP_DISKHEAD
kfbh.datfmt:                          1 ; 0x003: 0x01
kfbh.block.blk:                       0 ; 0x004: blk=0
kfbh.block.obj:              2147483648 ; 0x008: disk=0
kfbh.check:                  2042651808 ; 0x00c: 0x79c064a0
kfbh.fcn.base:                        0 ; 0x010: 0x00000000
kfbh.fcn.wrap:                        0 ; 0x014: 0x00000000
kfbh.spare1:                          0 ; 0x018: 0x00000000
kfbh.spare2:                          0 ; 0x01c: 0x00000000
kfdhdb.driver.provstr:   ORCLDISKTEST01 ; 0x000: length=14
kfdhdb.driver.reserved[0]:   1414743380 ; 0x008: 0x54534554
kfdhdb.driver.reserved[1]:        12592 ; 0x00c: 0x00003130
kfdhdb.driver.reserved[2]:            0 ; 0x010: 0x00000000
kfdhdb.driver.reserved[3]:            0 ; 0x014: 0x00000000
kfdhdb.driver.reserved[4]:            0 ; 0x018: 0x00000000
kfdhdb.driver.reserved[5]:            0 ; 0x01c: 0x00000000
kfdhdb.compat:                203424000 ; 0x020: 0x0c200100
kfdhdb.dsknum:                        0 ; 0x024: 0x0000
kfdhdb.grptyp:                        1 ; 0x026: KFDGTP_EXTERNAL
kfdhdb.hdrsts:                        3 ; 0x027: KFDHDR_MEMBER
kfdhdb.dskname:                  TEST01 ; 0x028: length=6
kfdhdb.grpname:                 DG_TEST ; 0x048: length=7
kfdhdb.fgname:                   TEST01 ; 0x068: length=6

.......................................................................................

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