Best approach for using sg_ses to control locate/fault leds?

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Greetings,

I am using sg_ses to poll a SAS JBOD for locate and fault led status and light leds if needed. So far the only method I can figure out how to accomplish this is by reading page 2 of the SES management device in the jbod chassis, dumping the raw hex output to a file, setting the select and RQST IDENT or RQST FAULT bits and sending back the entire 480 bytes with modified bits.

Turn locate led on:
sg_ses --page=0x2 /dev/sg18 -f --raw > /tmp/out
...twittle bits in /tmp/out with editor of choice...
sg_ses --control --page=2 -d - /dev/sg18 < /tmp/out

Is there a utility, a '--element=' arg or another method by which only the four bytes of the element control diag page can be sent instead of all 480 bytes?

--Jeff

--
------------------------------
Jeff Johnson
Manager
Aeon Computing

jeff.johnson@xxxxxxxxxxxxxxxxx
www.aeoncomputing.com
t: 858-412-3810   f: 858-412-3845
m: 619-204-9061

4905 Morena Boulevard, Suite 1313 - San Diego, CA 92117

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