CLSF:Checksum failed for disk messages in OCCSD.trc

Applies to:
Oracle Database - Enterprise Edition - Version 12.1.0.2 and later

Symptoms

During Grid infrastructure start， following error message was reported in the ocssd.trc,but GI stack can start successfully .

2018-01-22 19:10:23.541587 : SKGFD:3921823488: Handle 0x7fddd4244910 from lib :UFS:: for disk :/dev/raw/raw4:

2018-01-22 19:10:23.541642 : CLSF:3921823488: checksum failed for disk:/dev/raw/raw1:  <<<<<<<<<<<<<<<<<<<<
2018-01-22 19:10:23.541645 : CLSF:3921823488: Error: obj 2147483648 blk 0 name 'hard_kfbh' flags 0x65 first 1 <<<<<<<<<<<<<
2018-01-22 19:10:23.541646 : CLSF:3921823488: 0: expected 1 actual 1
2018-01-22 19:10:23.541652 : CLSF:3921823488: 1: expected 2 actual 130
2018-01-22 19:10:23.541653 : CLSF:3921823488: 2: expected 1 actual 1
2018-01-22 19:10:23.541654 : CLSF:3921823488: 3: expected 0 actual 0
2018-01-22 19:10:23.541655 : CLSF:3921823488: 4: expected 0 actual 0
2018-01-22 19:10:23.541656 : CLSF:3921823488: 5: expected 1 actual 1
2018-01-22 19:10:23.541657 : CLSF:3921823488: 6: expected 4215732672 actual 4215732672
2018-01-22 19:10:23.541658 : CLSF:3921823488: bh: ptr 0x7fddd4240200 size 512
2018-01-22 19:10:23.541661 : SKGFD:3921823488: bh: dump of 0x0x7fddd4240200, len 512
2018-01-22 19:10:23.541667 : SKGFD:3921823488: 0x0x7fddd4240200 01 82 01 01 00 00 00 00 - 00 00 00 80 c0 f9 46 fb ..............F.
2018-01-22 19:10:23.541725 : SKGFD:3921823488: 0x0x7fddd4240210 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541731 : SKGFD:3921823488: 0x0x7fddd4240220 4f 52 43 4c 44 49 53 4b - 00 00 00 00 00 00 00 00 ORCLDISK........
2018-01-22 19:10:23.541734 : SKGFD:3921823488: 0x0x7fddd4240230 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541738 : SKGFD:3921823488: 0x0x7fddd4240240 00 00 10 0c 00 00 01 03 - 44 41 54 41 5f 30 30 30 ........DATA_000
2018-01-22 19:10:23.541742 : SKGFD:3921823488: 0x0x7fddd4240250 30 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 0...............
2018-01-22 19:10:23.541746 : SKGFD:3921823488: 0x0x7fddd4240260 00 00 00 00 00 00 00 00 - 44 41 54 41 00 00 00 00 ........DATA....
2018-01-22 19:10:23.541750 : SKGFD:3921823488: 0x0x7fddd4240270 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541753 : SKGFD:3921823488: 0x0x7fddd4240280 00 00 00 00 00 00 00 00 - 44 41 54 41 5f 30 30 30 ........DATA_000
2018-01-22 19:10:23.541757 : SKGFD:3921823488: 0x0x7fddd4240290 30 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 0...............
2018-01-22 19:10:23.541760 : SKGFD:3921823488: 0x0x7fddd42402a0 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541764 : SKGFD:3921823488: 0x0x7fddd42402b0 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541768 : SKGFD:3921823488: 0x0x7fddd42402c0 00 00 00 00 00 00 00 00 - d1 86 f8 01 00 dc 6c 20 ..............l
2018-01-22 19:10:23.541771 : SKGFD:3921823488: 0x0x7fddd42402d0 d3 86 f8 01 00 d4 ec 28 - 00 02 00 10 00 00 10 00 .......(........
2018-01-22 19:10:23.541775 : SKGFD:3921823488: 0x0x7fddd42402e0 80 bc 01 00 00 3c 00 00 - 03 00 00 00 01 00 00 00 .....<..........
2018-01-22 19:10:23.541778 : SKGFD:3921823488: 0x0x7fddd42402f0 02 00 00 00 0a 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541782 : SKGFD:3921823488: 0x0x7fddd4240300 00 00 10 0a d1 86 f8 01 - 00 2c 6b 20 e0 00 00 00 .........,k ....
2018-01-22 19:10:23.541785 : SKGFD:3921823488: 0x0x7fddd4240310 00 01 00 00 37 00 00 00 - 01 00 00 00 01 00 00 00 ....7...........
2018-01-22 19:10:23.541789 : SKGFD:3921823488: 0x0x7fddd4240320 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541792 : SKGFD:3921823488: 0x0x7fddd4240330 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541796 : SKGFD:3921823488: 0x0x7fddd4240340 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541799 : SKGFD:3921823488: 0x0x7fddd4240350 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541803 : SKGFD:3921823488: 0x0x7fddd4240360 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541806 : SKGFD:3921823488: 0x0x7fddd4240370 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541810 : SKGFD:3921823488: 0x0x7fddd4240380 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541813 : SKGFD:3921823488: 0x0x7fddd4240390 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541817 : SKGFD:3921823488: 0x0x7fddd42403a0 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541820 : SKGFD:3921823488: 0x0x7fddd42403b0 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541824 : SKGFD:3921823488: 0x0x7fddd42403c0 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541827 : SKGFD:3921823488: 0x0x7fddd42403d0 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541831 : SKGFD:3921823488: 0x0x7fddd42403e0 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541834 : SKGFD:3921823488: 0x0x7fddd42403f0 00 00 00 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ................
2018-01-22 19:10:23.541835 : CLSF:3921823488: Read ASM header off dev:/dev/raw/raw1:224:256
2018-01-22 19:10:23.541846 : SKGFD:3921823488: Lib :UFS:: closing handle 0x7fddd423fc80 for disk :/dev/raw/raw1:

Cause

Because of the way voting files are accessed, it is possible that the disk header of ASM is being written to when it is being read. So, checksum failures are allowed. We just dump it to for diagnostic reasons.

This issue was discussed in following Bug 17372452 SOLSP64-12.1-CSS:OCSSD LOG REPORTED CHECKSUM FAILED AFTER INSTALL GI
Solution

These messages can be safely ignored.Enhancement request for removing this message was created.

References
BUG:17372452 - SOLSP64-12.1-CSS:OCSSD LOG REPORTED CHECKSUM FAILED AFTER INSTALL GI[This section is not visible to customers.]

BUG:17331041 - LNX64-12.1-CSS-SCS:CHECKSUM FAILED FOR DISK USED FOR VF[This section is not visible to customers.]