Re: E250 LED indicators
I have a mostly written driver that support environmental monitoring and
LEDs on the E250. It will handle temperature and fan monitoring, and
can control all the LEDs (currently is only twiddles the activity LED).
The bigger issue that has been keeping this driver off the list to date
is that the current PCF8584 (I2C bus controller) support must be
rewritten to support multi-master operation and I've not mustered the
enthusiasm to do it yet. Without such support, collisions result
infrequently in misread or miswritten data that results in possibly
bogus overheat conditions or LED states on the front status panel.
And since you asked, I'll poke a sore spot....
Another issue is the difference between the Solaris driver and existing
Linux envctrl driver(s). When the power-off temperature threshold is
met, Linux does a friendly shutdown. Solaris does a hard power-off,
which I feel is appropriate if we implement notification at the warning
threshold (bbc-envctrl and my envctrltwo do this, but envctrl does not).
However, due to the oft-lamented issue of sparc and sparc64 refusing to
power-down a system completely if it is on a serial console, you gain
little benefit from halting to OBP. DaveM-- I'll float you a sysctl
patch for sparc64 and sparc if you'd consider it and find the current
"protection" valuable, otherwise perhaps machine_power_off should
actually power-off, machine_halt should halt and userspace commands
should get smarter about whether they ask the system to halt or
power-off. As I recall, the Red Hat patches to /sbin/shutdown do
provide the distinction, though the userspace may not have "closed the
loop" to do the right thing by default on serial console installs.
To make a long answer short-- I can send you the work-in-progress driver
off-list, but I recommend running it in debug mode so that shutdowns are
not actually performed, otherwise you may get false positives. Let me know.
Costas Magkos wrote:
Hi debian people,
I have a Sun Enterprise E250 running sarge. E250 has a front panel with
LEDs used as health and fault indicators, which apparently work only
when the system is running Solaris.
Does anyone know of a workaround for them to work under debian?
Thanx in advance.
Internet Systematics Lab