Date: Sat, 05 Aug 2000 13:42:46 -0400 From: Laurence Berland <stuyman@confusion.net> To: Frank Pawlak <fpawlak@execpc.com> Cc: Joe Warner <jswarner@uswest.net>, freebsd-newbies@FreeBSD.ORG, freebsd-advocacy@FreeBSD.ORG Subject: Re: Newbie Learning Experience Message-ID: <398C5216.E9153917@confusion.net> References: <4.3.2.7.2.20000805110010.00b8d348@127.0.0.1>
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I'd think maybe you can submit it as a story for the september monthly
of daemon news. IMHO this is the sort of thing daemon news needs.
Frank Pawlak wrote:
>
> IMHO this is a great story. Perhaps this deserves a daemon news spot with
> some HOWTO implications.
>
> Regards,
> Frank
>
> At 08:32 AM 8/5/2000 -0600, Joe Warner wrote:
> >Hi all,
> >
> > I've had a real learning experience with my FreeBSD (3.4) system at
> >work over the past couple of days and at the risk of making myself look
> >like an idiot, I felt it important enough to share. Since I'm a newbie
> >and hope to help other newbies when facing similar situations, this
> >email is directed mainly at freebsd-newbies. However, I also felt it
> >important enough to share with freebsd-advocacy because of how amazed I
> >am with the OS. Instead of a little cartoon devil, maybe the mascot
> >should be the Energizer Bunny? FreeBSD keeps going and going and
> >going... 8^) Anyway, please bear with me. This is probably going to be
> >pretty lengthy, so for those of you don't like to read or are
> >uninterested, just close this email and delete it now. For the rest of
> >you, read on...
> > When I came into work last Thursday morning, I noticed that my PC
> >(Compaq Deskpro 2000), running FreeBSD 3.4 was at the login prompt and
> >my WIN NT machine was at the boot up password. I realized then that the
> >inevitable had happened....Power Outage! Thinking that power
> >outages/cold reboots meant death to most UNIX systems, I hurried to
> >prevent this from happening again and hooked up an APC Smart-UPS 1000
> >that we had sitting in one of our storage closets. Hooking it up to my
> >FreeBSD machine was easy enough. I just plugged the power cord into a
> >receptacle and then plugged the power from the CPU and monitor into the
> >back of the UPS. I finished by attaching the serial cable on the UPS to
> >the serial port on the back of the CPU (COM1) - There is only one serial
> >port available for Compaq Deskpro's. After hooking it up, I realized
> >that I would need to install some software that could communicate with
> >the UPS through the serial line and allow me to do a graceful shutdown
> >in the event of power loss. I went to APC's web site and though they
> >had their Powerchute software available for many commercial versions of
> >UNIX, I didn't see anything that was designed specifically for any of
> >the BSD's. They even had a Linux version and I learned later that at
> >least one person was running this successfully under Linux emulation on
> >his FreeBSD 3.4 system. I didn't want to run this under Linux emulation
> >if I didn't have to. Later, I came across an application in the ports
> >collection called UPSD - 2.0 that seemed to be designed specifically to
> >work with the APC Smart-UPS models. I loaded the 4th CD from the CD ROM
> >set and from /usr/ports/sysutils/upsd/ I typed make install and
> >installed it. I noticed that there wasn't any documentation included
> >with this port, not even a man page. It loaded only 2 files, the upsd
> >executable in /usr/local/sbin and the configuration file (upsd.conf) in
> >/usr/local/etc I su'd to root and attempted to spawn the daemon by
> >cd'ng to /usr/local/sbin and typing # ./upsd At this point, my whole
> >system locked up tighter than a drum! I couldn't kill X and couldn't
> >switch to another terminal. Nothing! I had to cold-reboot my system
> >again! After I booted back up, I looked at my logs and noticed a
> >message indicating there was a permission problem with /dev/cuaa0 This
> >device is owned by uucp and belongs to the dialer group. I su'd to root
> >again and adjusted the permissions so that other users would have access
> >and then tried to execute the program again. Same thing happened,
> >complete lockup! At this point, I was pretty frustrated and none the
> >information I had read in my books or the answers I received from
> >posting to FreeBSD-Questions seemed to help. I cd'd to
> >/usr/ports/sysutils/upsd and typed make deinstall and went home.
> > When I came in Friday morning, I noticed an email from someone who
> >said they were using a port called UPSMON - 2.1.3 with an APC Smart-UPS
> >on their FreeBSD system without any problems. This port wasn't on the
> >CD ROM set, so when I installed it, it had to fetch it from an ftp
> >site. No problem, right? Wrong! I installed this port and decided to
> >reboot. Big mistake! Now, during boot-up, my system would just hang
> >at:
> >
> >local package initialization: Cannot open /dev/cuaa0: Permission denied
> >upsmond<---(this is where it would hang)
> >
> > After hearing the voice of Ralph from the Simpsons in my head, going
> >Ha! Ha!.., I thought, now what do I do! After going through all my
> >books and documentation and trying to boot into single-user mode, fixit
> >mode from the 2nd cd in the cd rom set and even from kernel.GENERIC, I
> >realized I wasn't getting anywhere. My machine would always hang when
> >trying to launch the upsmond daemon during boot up. As a last resort, I
> >posted to FreeBSD-Questions and got the answer I was looking for. I was
> >told to go into single-user mode. At the beginning of the boot-up
> >process, there is a ten second count down that tells you to either hit
> >enter or wait for the count down to finish for system boot-up. Before
> >the counter finishes, you hit the space bar and you're presented with a
> >prompt where you can specify different boot options. I specified "boot
> >-s" for single user mode. In The Complete FreeBSD, it tells you to boot
> >into single-user mode and run fsck on / by issuing: fsck -y / <cr> I
> >ran this on / and /dev/wd0s1a, respectively. Then it tells you to mount
> >/ by typing: mount -u / I did this and it let me mount it. Lastly, it
> >says to mount /usr by typing: mount /usr It would let me mount this but
> >only with read access. I needed write access so that I could go into
> >/usr/local/etc/rc.d/ and either remove or change the upsmond.sh file in
> >there that was causing my system to hang. I got a response from someone
> >telling me to mount /usr by typing the following: mount -rwf /usr This
> >worked and I was able to edit upsmond.sh so that it was pointing to
> >/dev/cuaa1 and not cuaa0. This got my system booting. I found out
> >later that I could have successfully mounted /usr with r/w access if I
> >would have first fsck'd it by issuing: fsck -y /usr (I probably should
> >have done this for /var too)
> > I got my system booting again (Whew!) but still haven't figured out
> >why /dev/cuaa0 causes problems. I seems as if some kind of conflict is
> >going on, maybe something else is using this device? I haven't found
> >the answer to this yet. I got an email response back from APC, saying
> >they did have an application that would work with FreeBSD but I would
> >need to purchase their Simple UNIX Serial cable for $39.00 in order for
> >it to work. So, now I don't know if it's a device conflict or the cable
> >but I doubt I'll shell out the money for a new cable. Maybe my manager
> >will let me order it and reimburse me?
> > I've always thought that cold reboot/shutdowns were death to UNIX
> >systems, especially if you did it more than 5 or 6 times. I've
> >completely trashed my systems this way when I was using Red Hat 6.x and
> >Caldera 2.x in the past. Cold booted more than 5 times and got the
> >dreaded "kernel panic" message and had to reinstall. I ended up cold
> >booting my FreeBSD system more than 12 times the last couple of days and
> >it's still going! 8^) So, the moral of this story? FreeBSD is
> >forgiving, you just need to tell it how to forgive you! And...forgive
> >me for such a long story... 8^}
> >
> >Joe
> >
> >
> >--
> >
> > FreeBSD = The Power to Serve
> > ..Simply put = FreeBSD Rocks!
> >
> >
> >
> >
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>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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--
Laurence Berland
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Windows 98: n.
useless extension to a minor patch release for
32-bit extensions and a graphical shell for a
16-bit patch to an 8-bit operating system
originally coded for a 4-bit microprocessor,
written by a 2-bit company that can't stand for
1 bit of competition.
http://stuy.debate.net
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