Date: Wed, 27 Oct 2004 02:00:03 -0700 From: Sandy Rutherford <sandy@krvarr.bc.ca> To: questions@freebsd.org Cc: "Michael A. Alestock" <michaela@maa-net.net> Subject: Re: FreeBSD and UPS's Message-ID: <16767.25491.654445.94164@szamoca.krvarr.bc.ca> In-Reply-To: <20041026161139.I506@bsd.maa-net.net> References: <20041026161139.I506@bsd.maa-net.net>
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Michael, On Tue, 26 Oct 2004 you wrote: > I was just curious if FreeBSD supports any of the UPS's that have the > automated powerdown feature in the event of powerloss (APM)? I'm using apcupsd with an APC Back-UPS Pro 650 under FreeBSD 4.10. It works great, including automatic powerdown. There are some configuration issues with FreeBSD, which I quote: In the FreeBSD OS, there is no known way for a user program to get control when all the disks are synced. This is needed for apcupsd to be able to issue the killpower command to the UPS so that the UPS shuts off the power. To accomplish the same thing on FreeBSD systems, make sure you have a SmartUPS and that your UPS shutdown grace period is set sufficiently long so that you system will power down (usually 2 minutes), then use the kill-on-powerfail option on the apcupsd command line. You use the command `apctest' to set the UPS shutdown grace period in the UPS's EEPROM. It was straightforward. For smart UPS's with USB connections, I recall seeing some problems reports on the apcupsd email list regarding FreeBSD. However, my UPS uses a serial connection, so I didn't pay much attention. Sandy
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