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

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

Hi,

As far as I know, you unfortunately have to send back the entire page when it comes to SES.

Ben.

Quoted 17 lines · Jeff Johnson

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?