Fujitsu PRIMEQUEST 1000 Series User Manual page 618

"SK/ASC/ASCQ=5/0x24/0x00 (Illegal Request: Invalid field in CDB)" was
returned as a result from Mode Sense (Page 8). The cache status is unknown
because the Mode sense (Page 8) process failed.
%v: (Example) FUJITSU
%m: (Example) MAP3367NC
%ser: (Example) 01234567
Corrective action:
If a single drive is used, replace the disk. If an ETERNUS machine is used,
examine it.
Severity:
Warning
Action:
(R/M/T/S)
14087
sd:%s Device error (asking for cache data failed) vendor=%v model=%m
serial-no=%ser
Meaning:
An error other than "SK/ASC/ASCQ=5/0x24/0x00 (Illegal Request: Invalid field in
CDB)" was returned as a result from Mode Sense (Page 8). The cache status is
unknown because the Mode sense (Page 8) process failed.
%s:sd[a-z]* or %h:%c:%i:%l
%h: host number; %c: channel number; %i: id; %l: lun number
%v: (Example) FUJITSU
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