June 2005 - WLUG - wlug.mailman3.com

udev device removal not removing file
by Karl Hiramoto 16 Jun '05

16 Jun '05

I have some USB serial port devices that show up in /dev/tts/USB0 and /dev/tts/USB1 for example.. I have 4 gentoo boxes, and on one of them when I remove the device file does not disappear, on the other boxes the file disappear. What could be causing this? Adding a device is no problem, only the removal does not remove the device file /dev/tts/USB1 for example dmesg shows the device addition and removal just fine. I copied /etc/udev/* from a working machine where removal happens fine the one with problems with device removal and there was no change. They are all running the same kernel, hotplugg, baselayout.. This is an issue for me as i have a program of my own that looks for /dev/tts/USB* Any ideas out there? Thanks.

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AMD64 and 32-bit apps
by Carlton C. Stedman II 15 Jun '05

15 Jun '05

Recently I've begun considering migrating over to the amd64 platform (my motherboard just died on my athlon xp system, much to my chagrin) and figure this is a good place to ask for users experiences. I'm not worried about my video card drivers, since NVIDIA has great amd64 support, at least, so I'm told. My main concern is that I need to install some 32-bit emulation libraries and kernel modules, so I've read, to compile 32-bit apps, and that some compiled 32-bit apps will only work under a 32-bit environment, requiring me to setup a seperate environment to chroot into. I'm running gentoo and I'm up to the task, just wondering if anyone has any experience in this specifically and anything I should be concerned about or not to worry too much about. Thanks. -- Carlton C. Stedman II, sageman(a)wpi.edu "To iterate is human, to recurse, divine." -- L. Peter Deutch

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Reminder: WLUG Meeting, Wed June 15, 7:00 PM
by Andy Stewart 14 Jun '05

14 Jun '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 HI everybody, This is a reminder about the WLUG meeting to be held on Wednesday, June 15, 2005 at 7:00 PM in the Access Grid room on the WPI Campus in Worcester, MA USA. This meeting is open to anyone who is interested in Linux. Tim Keller will be our guest speaker, and he'll be talking about Logical Volume Management (LVM). More details can be found on the WLUG home page. I will have two books for the no cost raffle: Succeeding with Open Source by Bernard Golden Published by Addison-Wesley 2005 PHP5 Power Programming by Gutmans, Bakken, and Rethans Published by Prentice Hall 2005 The raffle winner is requested to write a review of the book and to post it somewhere on the Internet, and to copy the publisher. We had discussed the possibility of a summer barbecue in lieu of the July meeting. I think someone said we could have the party at their place, but I can't remember who said that. If this person was serious, please contact me via email and we can work out the particulars. It'll be a nice way to celebrate WLUG's 8th anniversary (we started July 1997)! After the meeting, we'll go out for pizza/soda at the Tech Pizza restaurant on Highland Street. Its a small place, but the 8-10 of us that go seem to be having a good time, and we've never had to wait for a table. :-) It may be hot in there this time of year...we'll have to scope it out. See you on Wednesday! Andy - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA, USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFCrj4THl0iXDssISsRAhttAJsG8rEhMLYrtzolhdFWpnwTBYFWFQCgh/xB RA6vaXZaqh7HUbT8Et7x1zM= =he7f -----END PGP SIGNATURE-----

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RE: [Wlug] HOWTO debug hard lockups
by Keller, Tim 12 Jun '05

12 Jun '05

Andy, Your lockup's sound like an SMP issue. I'd try booting a non SMP kernel and then seeing if you can duplicate the lockup... I say this because I was getting practically the same behavior with a duel Xeon machine running FC3. The machine would just up and die in the same way your machine is. Just my $.02. Tim. -----Original Message----- From: wlug-bounces(a)mail.wlug.org [mailto:wlug-bounces@mail.wlug.org] On Behalf Of Andy Stewart Sent: Wednesday, June 08, 2005 7:15 PM To: jmoyer(a)redhat.com; Worcester Linux Users Group Subject: Re: [Wlug] HOWTO debug hard lockups -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jeff Moyer wrote: > ==> Regarding Re: [Wlug] HOWTO debug hard lockups; Andy Stewart <andystewart(a)comcast.net> adds: > > andystewart> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > > andystewart> Jeff Moyer wrote: >>>==> Regarding [Wlug] HOWTO debug hard lockups; Andy Stewart >>><andystewart(a)comcast.net> adds: >>> > andystewart> HI gang, > andystewart> My dual Opteron machine is not happy. I cannot get more than > andystewart> 7 straight days of uptime without getting a hard lock, > andystewart> requiring a reboot. (My definition of hard lock is: machine > andystewart> responds neither to keyboard input, mouse input, nor network > andystewart> pings). > andystewart> I can stimulate hard locks by running OpenOffice 1.1.3 (I had > andystewart> 3 tonight, and 3-4 on a previous occasion while running > andystewart> OpenOffice). It makes no sense to me that an application run > andystewart> as a normal user could lockup a machine. > andystewart> I've tried setting "nmi_watchdog=1" to see if I could get an > andystewart> "oops" when it hard locks - no dice. Do you know any other > andystewart> tricks I could try to see if it is the kernel which is locking > andystewart> up? I'm running SuSE's version of 2.6.8. >>>Did you verify that NMIs are being delivered? After boot, cat >>>/proc/interrupts and make sure the NMI line is non-zero. Also note >>>that, at least with upstream and Red Hat kernels, the nmi_watchdog >>>defaults to 1 for Opterons (i.e. you shouldn't need to manually set it). > > andystewart> HI Jeff, > > andystewart> Well, this is weird, I'm seeing a ZERO count for NMIs, so that > andystewart> makes me think they are NOT being delivered. How would I go > andystewart> about solving *that* little problem? I did a "cat > > Well, you can try booting with nmi_watchdog=2. This will try to use the > local APIC to deliver nmi's, but I haven't actually seen a dual processor > system that required this (all of them I've seen work with nmi_watchdog=1). > It is worth a try, however. With nmi_watchdog=1, I see the following output from "dmesg | grep -i nmi" with the 2.6.11.11 kernel I very recently installed: Bootdata ok (command line is root=/dev/sda3 vga=0x31a selinux=0 console=tty0 resume=/dev/sda2 desktop elevator=as nmi_watchdog=1 splash=verbose) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1]) ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1]) Kernel command line: root=/dev/sda3 vga=0x31a selinux=0 console=tty0 resume=/dev/sda2 desktop elevator=as nmi_watchdog=1 splash=verbose activating NMI Watchdog ... done. testing NMI watchdog ... CPU#1: NMI appears to be stuck (0)! I'll try nmi_watchdog=2 shortly. Thanks, Andy - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA, USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFCp3v8Hl0iXDssISsRAoDJAJ0TonNTSEAd+4W0GRPwTW/UoGFssACdEEq9 8IgEFJ7VAL/FVeyPXrEapHg= =jcjE -----END PGP SIGNATURE----- _______________________________________________ Wlug mailing list Wlug(a)mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug

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Job opportunity in Natick for experienced Unix admin
by Simoncini, Matthew 08 Jun '05

08 Jun '05

List, I work for a large consulting company in Natick, MA. and we're looking for a couple of experienced (mid level) Unix administrators to join our team. Some of the skills that are required include: Unix experience (Sun Solaris 8 or higher) Veritas volume manager Veritas cluster services Storage management experience (preferably EMC Clarion or DMX) Backup management experience (preferably EMC EDM) Team player Desire to learn and grow If you or anyone you know is looking for a position as a Unix Administrator, please contact me off list at matthewsmbox-resumes(a)yahoo.com <mailto:matthewsmbox-resumes@yahoo.com> . Thanks. Matthew

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MySQL curses management tool?
by John Stoffel 08 Jun '05

08 Jun '05

Hi all, A quick googling didn't help, so I'm turning to you all. I'm looking for a mysql management tool which is CLI/curses based and more powerful/easier to use when compared to the mysqlaccess and mysqladmin stuff. Basically, something to help me manage DBs, users and permissions over an SSH connection. I know I could use some of the X tools, but I'd prefer not too if possible. Thanks, John

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Back issues of Linux Journal magazine available
by Andy Stewart 07 Jun '05

07 Jun '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 HI everybody, I am cleaning out a closet and have some back issues of Linux Journal magazine that I'd like to give to somebody who wants them. They are all in great shape, all have been read, and (for you collectors) most probably do not have the mail in subscription cards (I like to use those as bookmarks). Aug 1995 (issue 16) - Dec 1995 All issues from 1996 All issues from 1997, incl Buyer's Guide All issues from 1998, incl Buyer's Guide All issues from 1999, incl "Enterprise Solutions" supplement If nobody wants them by next Monday, I'll send them to recycling. I'd be happy to bring them to the next WLUG meeting if somebody specifically says they want them. Later, Andy - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA, USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFCpOXZHl0iXDssISsRApXfAJ9UODjZ7meFzPZ/YesyBbsKDPBlUgCeM8Pa Ovvq9jm+aPlUetgGUSG94pQ= =WsE0 -----END PGP SIGNATURE-----

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USB External DVD RW drive recommendations
by Andrew Robert 06 Jun '05

06 Jun '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Everyone, I am looking at the possibility of getting an external USB DVD-RW drive but want to be sure on its compatibily to Linux, specifically Fedora Core 3. Does anyone have any recommendations as to what might be a good choice? - -- Thank you, Andrew Robert Systems Architect Information Technologies MFS Investment Management Phone: 617-954-5882 Pager: 781-945-1742 E-mail: arobert(a)mfs.com Linux User Number: #201204 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFCpAzG3PP5iSKX574RArBkAJ0Rf1x7rVih4pCMNYcpMFDWGIM8TgCgmfQj KqW2WL0gUGDDqflyUstow54= =JTsT -----END PGP SIGNATURE-----

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Seeking Socket 478 heat sink retaining bracket w/screws
by Andy Stewart 06 Jun '05

06 Jun '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 HI everybody, If anybody has this little plastic dohickey for holding the heat sink to the motherboard, and would like to get rid of it, I'm can use one of these for a socket 478 CPU. I am willing to buy you pizza/beer or give you bribe money to obtain one. I'll even trade you the last 5 Ubuntu Linux CDs I own if that's what it takes. :-) Since my MB has the screw threads, I don't think the dohickey with the plastic holding things will work for me, but the version with screws will work. Thanks in advance, Andy P.S. "dohickey" really is a word according to dictionary.com (it is synonymous with "thingamajig"). - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA, USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFCo7K/Hl0iXDssISsRAvx9AJ4/oh2XObmcpc2pedFNHGlmrYI4OgCfdgeU 9A0jpx2SVC6f8stSfLFH2nc= =rk+i -----END PGP SIGNATURE-----

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WLUG Website updated
by Andy Stewart 06 Jun '05

06 Jun '05

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 HI everybody, I've just updated the WLUG website to include the slides from the May 2005 WLUG talk about "Linux on Appliances" given by Jason Schonberg. I also noticed that the entire slides page was broken (it should be fixed now). Also, I posted many details about the June 2005 WLUG talk, to be given by Tim Keller. Check it out! Later, Andy - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA, USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFCo7DRHl0iXDssISsRAl9WAJ9HwXUaR22lKILHHL8mWyRhfLQD2ACeI8og RzsOQzRd2Ynhb3GWwX9MhxA= =IoeU -----END PGP SIGNATURE-----

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