IPMI fru read command not reliable

[augustofg]

When trying to read the FRU contents via ipmitool, it return different/incomplete data every time I tried:

$ ipmitool -I lan -H de-22rabpm-co-cratectrl -A none -T 0x82 -m 0x20 -t 126 fru read 0 /tmp/afcv3.1-fru.bin
Fru Size         : 220 bytes
Done
$ hexdump -C /tmp/afcv3.1-fru.bin 
00000000  00 1c bf 42 fd 7e 00 00  00 1c bf 42 fd 7e 00 00  |...B.~.....B.~..|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000000d0  00 00 00 00 00 00 00 00  00 00 00 00              |............|
000000dc

$ ipmitool -I lan -H de-22rabpm-co-cratectrl -A none -T 0x82 -m 0x20 -t 126 fru read 0 /tmp/afcv3.1-fru.bin
Fru Size         : 220 bytes
Done
$ hexdump -C /tmp/afcv3.1-fru.bin 
00000000  01 00 00 01 08 0f 00 e7  01 07 00 50 d0 b2 cf 43  |...........P...C|
00000010  72 65 6f 74 65 63 68 2d  41 74 6d 6f 73 00 c8 41  |reotech-Atmos..A|
00000020  46 43 3a 33 2e 31 00 c8  43 4e 30 30 30 37 38 00  |FC:3.1..CN00078.|
00000030  c4 41 46 43 00 c7 41 46  43 46 52 55 00 c1 00 76  |.AFC..AFCFRU...v|
00000040  01 07 00 c6 43 4e 50 45  4d 00 c4 00 00 00 00 00  |....CNPEM.......|
00000050  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000000d0  00 00 00 00 00 00 00 00  00 00 00 00              |............|
000000dc