Re: Strange UPS behavior
On Wed, 2003-05-07 at 23:20, Mark L. Kahnt wrote:
> On Wed, 2003-05-07 at 21:31, ZephyrQ wrote:
> > For the past few months, my UPS has 'blinked out' on me. The rest of
> > the power in the house was fine, but the items plugged into the UPS have
> > tripped, causing the usual confusion and 20+ minute boot up sequence (12
> > partitions, 90+ Gigs of hda/b including manually running fsck on my /var
> > partition).
> > Thanx.
> >
> To be clear on this - the power from the UPS to the devices plugged into
> it is failing, so you don't get a clean shutdown? That sounds like the
> circuitry between the power regulator portion and the power distribution
> area of the UPS has a faulty point. If it is still under warranty,
> contact the manufacturer - the puppy is broken. The UPS should help you
> avoid outages or permit clean shutdowns when they do happen - it
> shouldn't introduce its own outages to the mix.
Yes...the problem is from the UPS. I works fine for the 1-5 second
'cutouts' we get out here in rural Arkansas. But I will be
working/playing/browsing along and it will 'trip' and beep--causing me
to reboot from a turned off machine.
A related question, will grounding/lack of grounding cause this? I
just discovered that the room I use has a ceiling fan NOT
grounded...and that the CPU isn't grounded either (even though plugged
into the UPS).
> Does the UPS unit work roughly correctly when you pull the plug from the
> wall? The only alternative that comes to mind is that the circuits might
> be sensing a brown-out or power surge, switching to battery during the
> power trouble, and the battery is not working - hence it just drops
> power to the devices immediately. What make is the UPS, and what
> software are you using to monitor it?
It's a Connext Battery Backup 300. No software monitoring as there
wasn't any linux stuff for it available when I bought it (back in my
SuSE days...). To be honest, I've never really pursued it when moving
to Debian.
> Beyond that, switch to a journal-based file system on those larger
> volumes to speed up recovery. I use ext3 on /var, and it has yet to have
> a discernable problem, either with lost data, or a huge journal to
> replay.
I've been wondering, is the switch to ext3 going to cause many
problems? I don't have a lot of time to fix problems right now...
Thanx for the help.
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