AIC J4024-02, User Manual

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Chapter 3. Sub-system Configuration Setup J4024-02 User Manual
3.6.5.6 How to enable/disable the enclosure alarm by your software
Enclosure control element
BYTE/BIT 7 6 5 4 3 2 1 0
0
COMMON CONTROL
SELECT PRDFAIL DISABLE RST SWAP Reserved
1
RQST
IDENT
Reserved
2
POWER CYCLE
REQUEST
POWER CYCLE DELAY
3 POWER OFF DURATION
REQUEST
FAILURE
REQUEST
WARNING
The system alarm LED is used for the enclosure alarm and power alarm. The
"REQUEST FAILURE" and “REQUEST WARNING” for Enclosure are defined in the bit1,
byte3 and bit0, byte3 of the "Enclosure control element" in the SES specification.
Setting either bit can enable the enclosure alarm. Clearing both bits disables the
enclosure alarm. We use the software package "sg3_utils" on Linux for example, and
have a SAS HBA and a cable to connect your host with the expander.
(A) Show the device for AIC Expander Controller (canister)
$ sg_map -i
/dev/sg2 AIC 12G 4U24SAS3swap 0c0b
(B) Enable the enclosure alarm
$ sg_ses --descriptor=EnclosureElement01 --set=3:1:1 /dev/sg2
or
$ sg_ses --descriptor=EnclosureElement01 --set=3:0:1 /dev/sg2
(C) Disable the enclosure alarm
$ sg_ses --descriptor=EnclosureElement01 --clear=3:1:1 /dev/sg2
and
$ sg_ses --descriptor=EnclosureElement01 --clear=3:0:1 /dev/sg2