- WLUG - wlug.mailman3.com

SuSE 9.2 (x86/x86_64) needs a new home.

by Adam Keck

Hello All, I have a retail boxed SuSE 9.2 Professional that I never used. Would anyone like to give it a better home? $10.00 takes it. I can bring it the next meeting. -Adam

July 9, 2005

Disregard last message

by Eric Martin

did a lot more searching and I just find out now that I was incorrect. V2.6of the WUSB11 uses and amtel chip. My apologies.

July 9, 2005

FC3 Wireless Question

by Eric Martin

Ok, this is to all of the Fedora / Red Hat users. I just loaded FC3 on a new machine, and the only way to get network on it is wireless. I'm trying to use a linksys wusb11 (99.9999% positive it uses the prism2 chipset) . No matter what I do, I can't get /proc/net/dev to show a wireless device. I compiled the modules myself, tried hermes modules, even tried ndiswrapper althogh I can't get that to work. any help is appreciated. Eric

July 9, 2005

CAcert.org

by Minkov, Ross

I am an assurer with CAcert.org. If anyone is interested in joining see http://www.cacert.org/ for details. Regards, Ross

July 8, 2005

Re: [Wlug] Is there a simple Unix shell command to list dates backwards?

by douglas.r.aker＠verizon.com

Thanks Theo, this is exactly what I was looking for. I actually emailed Thomas Esken (GNU gcal developer), and the best gcal example he could come up was... gcal -f/dev/null -Hno -#0*d1#999 -c-Qxld20- %20070706 But this command works only up until the beginning of any calendar year, i.e. it doesn't easily cross year boundaries like your suggestion does. FYI: I need this sort of command in order to generate charts (using XML:SVG) that display metrics from some DB2 Connect gateways that I admin. The title of one chart might be: Total Daily Connections, last 100 days. If data for any day is missing, I want the chart to reflect that. Currently, the charts I'm creating handle missing days poorly, they simply cover up gaps in the data with the next previous day's metric. Thanks again, Doug p.s. SVG is interesting: http://www.w3.org/Graphics/SVG/ "Theo Van Dinter" <felicity(a)kluge.n To: "Worcester Linux Users Group" <wlug(a)mail.wlug.org> et> cc: Sent by: Subject: Re: [Wlug] Is there a simple Unix shell command to list dates backwards? wlug-bounces@mail .wlug.org 07/05/2005 05:43 PM Please respond to "Worcester Linux Users Group" On Tue, Jul 05, 2005 at 05:23:24PM -0400, douglas.r.aker(a)verizon.com wrote: > I'm looking for a standard Unix shell command that can list an arbitrary > number of day dates backwards from today. For example, something like > this: > > $ unixcommand -7 > Tuesday July 5 2005 > Monday July 4 2005 > Sunday July 3 2005 [...] > Command must transit months, years, leap-years, etc. Nothing comes to mind, but I'd do something like: $ perl -e 'for($i=0;$i<=$ARGV[0];$i++){ print scalar(localtime(time-86400*$i)),"\n"; }' 7 Tue Jul 5 17:31:35 2005 Mon Jul 4 17:31:35 2005 Sun Jul 3 17:31:35 2005 [...] Or if you need that other specific format: #!/usr/bin/perl my @mon = qw/January February March April May June July August September October November December/; my @day = qw/Sunday Monday Tuesday Wednesday Thursday Friday Saturday/; my $time = time; my $count = $ARGV[0]; while($count--) { my @lt = localtime($time); print join(" ", $day[$lt[6]], $mon[$lt[4]], $lt[3], 1900+$lt[5]),"\n"; $time -= 86400; } $ perl script 7 Tuesday July 5 2005 Monday July 4 2005 Sunday July 3 2005 [...] -- Randomly Generated Tagline: "I love deadlines. I like the whooshing sound they make as they fly by." - Douglas Adams _______________________________________________ Wlug mailing list Wlug(a)mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug #### C.DTF has been removed from this note on July 06 2005 by Doug Aker

July 6, 2005

Re: [Wlug] Is there a simple Unix shell command to list dates backwards?

by Robert Breznak

I can't offer any help, but I am curious what you are doing. Thanks, Bob On Jul 5, 2005, at 5:23 PM, douglas.r.aker(a)verizon.com wrote: > > > > > I'm looking for a standard Unix shell command that can list an > arbitrary > number of day dates backwards from today. For example, something like > this: > > $ unixcommand -7 > Tuesday July 5 2005 > Monday July 4 2005 > Sunday July 3 2005 > Saturday July 2 2005 > Friday July 1 2005 > Thursday June 30 2005 > Wednesday June 29 2005 > > Command must transit months, years, leap-years, etc. > > Does gcal, or any other Unix command, have this capability? > > Thanks, > Doug > > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug >

July 5, 2005

Re: [Wlug] Is there a simple Unix shell command to list dates backwards?

by Theo Van Dinter

On Tue, Jul 05, 2005 at 05:23:24PM -0400, douglas.r.aker(a)verizon.com wrote: > I'm looking for a standard Unix shell command that can list an arbitrary > number of day dates backwards from today. For example, something like > this: > > $ unixcommand -7 > Tuesday July 5 2005 > Monday July 4 2005 > Sunday July 3 2005 [...] > Command must transit months, years, leap-years, etc. Nothing comes to mind, but I'd do something like: $ perl -e 'for($i=0;$i<=$ARGV[0];$i++){ print scalar(localtime(time-86400*$i)),"\n"; }' 7 Tue Jul 5 17:31:35 2005 Mon Jul 4 17:31:35 2005 Sun Jul 3 17:31:35 2005 [...] Or if you need that other specific format: #!/usr/bin/perl my @mon = qw/January February March April May June July August September October November December/; my @day = qw/Sunday Monday Tuesday Wednesday Thursday Friday Saturday/; my $time = time; my $count = $ARGV[0]; while($count--) { my @lt = localtime($time); print join(" ", $day[$lt[6]], $mon[$lt[4]], $lt[3], 1900+$lt[5]),"\n"; $time -= 86400; } $ perl script 7 Tuesday July 5 2005 Monday July 4 2005 Sunday July 3 2005 [...] -- Randomly Generated Tagline: "I love deadlines. I like the whooshing sound they make as they fly by." - Douglas Adams

July 5, 2005

Is there a simple Unix shell command to list dates backwards?

by douglas.r.aker＠verizon.com

I'm looking for a standard Unix shell command that can list an arbitrary number of day dates backwards from today. For example, something like this: $ unixcommand -7 Tuesday July 5 2005 Monday July 4 2005 Sunday July 3 2005 Saturday July 2 2005 Friday July 1 2005 Thursday June 30 2005 Wednesday June 29 2005 Command must transit months, years, leap-years, etc. Does gcal, or any other Unix command, have this capability? Thanks, Doug

July 5, 2005

Re: [Wlug] Are any of us involved in a freshmeat project?

by Robert L Krawitz

Date: Fri, 01 Jul 2005 13:47:36 -0400 From: Andy Stewart <andystewart(a)comcast.net> Freshmeat and Sourceforge are places which host projects. They provide disk space for project files, mailing lists, and a project web page. As you've noted, there are innumerable projects of myriad varieties. Freshmeat just provides listing services (unless things have changed recently). Sourceforge provides hosting. A few years ago, I participated by writing a users' guide for a project called Gimp-Print (now being renamed to Gutenprint). I liked using the software but noted that it lacked documentation for the user. I also knew the project lead since we were employed by the same company. I wrote the users' guide and contributed it to the project using the GNU Free Documentation License. At that time, my proverbial itch was thus scratched. I still like and use the software frequently, but alas I have not had time to properly update the manual. You would be more than welcome to return if you like :-) -- Robert Krawitz <rlk(a)alum.mit.edu> Tall Clubs International -- http://www.tall.org/ or 1-888-IM-TALL-2 Member of the League for Programming Freedom -- mail lpf(a)uunet.uu.net Project lead for Gimp Print -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton

July 1, 2005

Re: [Wlug] Are any of us involved in a freshmeat project?

by Robert Breznak

In the Linux community, there are tons of way to help out. It all depends on your expertise and your interests. If you are interested in web based projects, you might want to check out any of the PHP projects. Although they are not usually directly related to *nix, they use the same licensing and run on the common LAMP setup. One way to improve the *nix community is to write documentation. As I am a big fan of FreeBSD I occasionally write tutorials on install and setup of common applications, packages, etc. Bob Breznak On Jul 1, 2005, at 1:47 PM, Andy Stewart wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Ken Jones wrote: > >> I am interested in contributing to the LINUX effort. When I go to >> <http://freshmeat.net/browse/18/> and am overwhelmed by the >> choices and >> by the lingo. Are any us WLUG folks involved in any of these? I >> know >> our tastes and skills may not match. I may not be able to directly >> contribute, but it would feel good to get an insight into the >> workings >> and the process. >> >> Ken Jones >> _______________________________________________ >> Wlug mailing list >> Wlug(a)mail.wlug.org >> http://mail.wlug.org/mailman/listinfo/wlug >> >> > > HI Ken, > > Freshmeat and Sourceforge are places which host projects. They > provide > disk space for project files, mailing lists, and a project web > page. As > you've noted, there are innumerable projects of myriad varieties. > > A few years ago, I participated by writing a users' guide for a > project > called Gimp-Print (now being renamed to Gutenprint). I liked using > the > software but noted that it lacked documentation for the user. I also > knew the project lead since we were employed by the same company. I > wrote the users' guide and contributed it to the project using the GNU > Free Documentation License. At that time, my proverbial itch was thus > scratched. I still like and use the software frequently, but alas I > have not had time to properly update the manual. > > What suits your fancy? Is there some program which you'd like to > write > and contribute to the community? It need not be anything grandiose - > often simpler is better. Part of the Unix philosophy is to do one > thing, and to do it *very* well. Or, perhaps there is a piece of > software you like to use which needs help with the documentation. > Writing good bug reports also helps a project. > > Yet another way to contribute to Linux is to teach others about Linux. > I teach an adult education class twice yearly. I know of one other > WLUG > member who also does this. > > Depending on your time, talents, and interest, there are many ways to > contribute. What do you think you would *like* to do? > > 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 > > iD8DBQFCxYG4Hl0iXDssISsRAqmyAJ0WZ/4JaF0T4WZkFrfwWnXm4bHBjwCfdh26 > GXBAg1b1rYE8okey8BqFH8s= > =tMZm > -----END PGP SIGNATURE----- > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug >

July 1, 2005

Re: [Wlug] Are any of us involved in a freshmeat project?

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Ken Jones wrote: > I am interested in contributing to the LINUX effort. When I go to > <http://freshmeat.net/browse/18/> and am overwhelmed by the choices and > by the lingo. Are any us WLUG folks involved in any of these? I know > our tastes and skills may not match. I may not be able to directly > contribute, but it would feel good to get an insight into the workings > and the process. > > Ken Jones > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > HI Ken, Freshmeat and Sourceforge are places which host projects. They provide disk space for project files, mailing lists, and a project web page. As you've noted, there are innumerable projects of myriad varieties. A few years ago, I participated by writing a users' guide for a project called Gimp-Print (now being renamed to Gutenprint). I liked using the software but noted that it lacked documentation for the user. I also knew the project lead since we were employed by the same company. I wrote the users' guide and contributed it to the project using the GNU Free Documentation License. At that time, my proverbial itch was thus scratched. I still like and use the software frequently, but alas I have not had time to properly update the manual. What suits your fancy? Is there some program which you'd like to write and contribute to the community? It need not be anything grandiose - often simpler is better. Part of the Unix philosophy is to do one thing, and to do it *very* well. Or, perhaps there is a piece of software you like to use which needs help with the documentation. Writing good bug reports also helps a project. Yet another way to contribute to Linux is to teach others about Linux. I teach an adult education class twice yearly. I know of one other WLUG member who also does this. Depending on your time, talents, and interest, there are many ways to contribute. What do you think you would *like* to do? 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 iD8DBQFCxYG4Hl0iXDssISsRAqmyAJ0WZ/4JaF0T4WZkFrfwWnXm4bHBjwCfdh26 GXBAg1b1rYE8okey8BqFH8s= =tMZm -----END PGP SIGNATURE-----

July 1, 2005

Are any of us involved in a freshmeat project?

by Ken Jones

I am interested in contributing to the LINUX effort. When I go to <http://freshmeat.net/browse/18/> and am overwhelmed by the choices and by the lingo. Are any us WLUG folks involved in any of these? I know our tastes and skills may not match. I may not be able to directly contribute, but it would feel good to get an insight into the workings and the process. Ken Jones

July 1, 2005

Re: [Wlug] Moving boot drive from hdb to hda

by Michael Long

> At first glance I would say it's probably /etc/fstab. > Thanks for pointing this out. Another quick edit and all is working now. -mike

June 29, 2005

Re: [Wlug] Moving boot drive from hdb to hda

by Andrew Mellors

At first glance I would say it's probably /etc/fstab. -Andy On 6/28/05, Michael Long <mlong(a)datalong.com> wrote: > I am in the process of recovering my system from a bad drive and have almost > succeeded. My system had 2 drives both were very similar in that they each had a > version of linux installed with a swap partition and primary partition. The hda > drive died in a way that made the mbr unavailable. I switch the drives making hdb > hda. I then booted into a rescue mode (Suse) and modified the /boot/grub/menu.lst > file and replaced the references for hdb with hda. It now reads > > kernel (hd0,1)/boot/vmlinuz root=/dev/hda2 vga=0x31a splash=silent desktop > resume=/dev/hda1 showopts > initrd (hd0,1)/boot/initrd > > I also modified the /boot/grub/device.map file. Upon rebooting the system it comes > up allows me to choose at the grub menu and proceeds to boot. The boot messages > are: > > Checking root file system... > fsck 1.34 (25-Jul-2003) > Failed to open the device '/dev/hdb2': No such device or address > Warning... fsck.reiserfs for device /dev/hdb2 exited with signal 6. > < more messages > > file system is currently mounted read-only. > > The correct file system is mounted and I can remount it as read-write. There > appears to be another reference to hdb2 somewhere. Any ideas how to fix this? > > Thanks, > Mike > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- -Andy

June 29, 2005

Moving boot drive from hdb to hda

by Michael Long

I am in the process of recovering my system from a bad drive and have almost succeeded. My system had 2 drives both were very similar in that they each had a version of linux installed with a swap partition and primary partition. The hda drive died in a way that made the mbr unavailable. I switch the drives making hdb hda. I then booted into a rescue mode (Suse) and modified the /boot/grub/menu.lst file and replaced the references for hdb with hda. It now reads kernel (hd0,1)/boot/vmlinuz root=/dev/hda2 vga=0x31a splash=silent desktop resume=/dev/hda1 showopts initrd (hd0,1)/boot/initrd I also modified the /boot/grub/device.map file. Upon rebooting the system it comes up allows me to choose at the grub menu and proceeds to boot. The boot messages are: Checking root file system... fsck 1.34 (25-Jul-2003) Failed to open the device '/dev/hdb2': No such device or address Warning... fsck.reiserfs for device /dev/hdb2 exited with signal 6. < more messages > file system is currently mounted read-only. The correct file system is mounted and I can remount it as read-write. There appears to be another reference to hdb2 somewhere. Any ideas how to fix this? Thanks, Mike

June 29, 2005

Re: [Wlug] ldifde for linux?

by Matt Higgins

This may be a little late but you can use perl to do this the Net::LDAPS module will make secure connections and just use the Net::LDAP::Entry object to insert you data from linux to windows. On 4/20/05, Justin Odom <jodom(a)wpi.edu> wrote: > I want to keep windows and linux accounts seperate(as far as > authentication) but keep the same password. > > I have a solution now which produces the ldf files on linux > > Since this will include passwords being transfered, it MUST be secure ldap. > > Thanks, > > Justin > > Jared Greenwald wrote: > > Why not just use ldap as your login authentication on linux? It can > > work similarly to nis. This sounds like active directory stuff... > > > > -Jared > > > > On 4/20/05, Justin Odom <jodom(a)wpi.edu> wrote: > > > >>Figured I'd throw this out there. > >> > >>I am working on a project that requires me to push .ldf files from a > >>linux server to a window 2003 server. Basically creating the same > >>accounts on the linux system onto the windows system. > >> > >>Does anyone know of linux program that is equivalent of the windows > >>"ldifde" program? It needs to be able to create a secure connection with > >>ldaps. > >> > >>Thanks in advance, > >> > >>-- > >>Justin Odom > >> > >>_______________________________________________ > >>Wlug mailing list > >>Wlug(a)mail.wlug.org > >>http://mail.wlug.org/mailman/listinfo/wlug > >> > > > > > > _______________________________________________ > > Wlug mailing list > > Wlug(a)mail.wlug.org > > http://mail.wlug.org/mailman/listinfo/wlug > > -- > Justin Odom > ECE Systems Administrator > jodom(a)wpi.edu > Worcester Polytechnic Institute > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug >

June 29, 2005

Re: [Wlug] HOWTO debug hard lockups

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Andy Stewart wrote: > > HI everybody, > > Perhaps I have found some light in this tunnel. > > I upgraded to the 2.6.12 kernel (yeah, I know, that just changed the > entire experiment) and turned off "CPU freq scaling" and "PCI hotplug > support" since I didn't think I needed either of those. I built the > 2.6.12 kernel and played beer_golf 5 times in a row and the system DID > NOT lockup. I'm not sure why those features were enabled in the first > place. (I should probably go back to 2.6.11.11 and disable these two > features and see if that has any positive effect.) > > I'm far too much of a pessimist to claim victory, but perhaps my luck is > turning for the better. My fingers are still crossed. I am (extremely) > cautiously optimistic. > > I thought I'd mention this in case somebody reads this thread in the > future and maybe, just maybe, this tidbit helps. Besides, I've read a > lot of threads where the problem is described in detail, but the answer > is never forthcoming(!). > > Later, > > Andy > > Hi Everybody, I went back to the 2.6.11.11 kernel and turned off the "CPU freq scaling" and "PCI hotplug support", but it didn't matter, as this kernel still locks up on me very quickly with the beer_golf.swf game (a copy of which I've saved as a diagnostic for future kernels to which I might upgrade - a *long* time from now). I am therefore concluding that something in 2.6.12 has fixed this problem since I have not yet locked up this kernel (under any conditions). I did notice several K8 and AMD64 specific notes in the CHANGELOG for this kernel. Thanks again(!!) for all of your helpful suggestions. 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 iD8DBQFCwMEEHl0iXDssISsRAsRgAJ0ZDt/dlQrN+t1KRvgoBoC97yhcmgCfT7Vo 31dPPiB3sSKrDsx/FjhHYzs= =7kuI -----END PGP SIGNATURE-----

June 28, 2005

[Fwd: LUG Leaders -- your most recent book shipment from AW/PHPTR]

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi Everybody, Please note that the books which I've been raffling at WLUG meetings for the last few months have come from Addison-Wesley publishing. Here is more information from the publisher, including the URL where you can submit your review of any of these books, and information on how to receive a LUG discount on future purchases. I did receive two of their "SPRING INTO" series books, and they will be raffled at a future WLUG meeting. Many thanks to this publisher for supplying us with books to review! Happy Reading, Andy - -------- Original Message -------- Subject: LUG Leaders -- your most recent book shipment from AW/PHPTR Date: Thu, 23 Jun 2005 19:30:09 -0500 From: Heather.Fox(a)pearsoned.com To: andystewart(a)COMCAST.NET Hello Linux User Group Leaders: Please be advised that you will soon receive a June, 2005, book shipment from Publisher Addison-Wesley Professional http://www.awprofessional.com containing review copies of two flagship books from our newest book series, titled the SPRING INTO Series. Also, read below for details on how you and your UG members can receive a 35% discount off list price [inc. FREE shipping via UPS Ground when shipping within the U.S.] for any Addison-Wesley or Prentice Hall PTR book. The review copy titles you will receive are: 1)"Spring Into Linux" by Janet Valade: http://www.awprofessional.com/title/0131853546; 2) "Spring Into Technical Writing" by Barry Rosenberg: http://www.awprofessional.com/title/0131498630. These titles are from the new Addison-Wesley SPRING INTO Series: http://www.awprofessional.com/springinto. ************************************************************ PLEASE ASK YOUR MEMBERS TO SUBMIT REVIEWS FOR THESE BOOKS DIRECTLY ONLINE! Introducing the new Addison-Wesley REVIEWS LINK. Now you can ask your LUG members to easily and directly submit reviews of the books, which they borrow and/or "win" at your User Group meetings. Simply click the link below, and REVIEW AWAY! http://www.awprofessional.com/reviews ************************************************************ SPECIAL DISCOUNT COUPON FOR LUG MEMBERS FOR ANY BOOK FROM ADDISON-WESLEY/ PRENTICE HALL PTR: Step 1: visit http://www.awprofessional.com or http://www.phptr.com and add desired books to "shopping cart" Step 2: Proceed to checkout Step 3: Enter billing and shipping address [if different from billing address] Step 4: Choose a shipping method [UPS Ground is *FREE* within the U.S.!] Step 5: TO OBTAIN YOUR 35% DISCOUNT, enter the coupon code: LUG [case-sensitive], during "Checkout". Step 6: Coupon expires August 1, 2005. ************************************************************ If you have any questions, please don't hesitate to contact me. Happy Reading! Sincerely, User Group Liaison Heather Fox - -- 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 iD8DBQFCvGp+Hl0iXDssISsRAgGoAJ9TMEv417KQE9oZkDNrO9X5Rb6r2ACgiJkl 6P/NYq5sD/4ZTmKbHShWlIc= =I9cI -----END PGP SIGNATURE-----

June 24, 2005

[Fwd: An Invitation for a Free Webcast: Rocks Cluster and Object Storag e]

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - -------- Original Message -------- Subject: An Invitation for a Free Webcast: Rocks Cluster and Object Storag e Date: Thu, 23 Jun 2005 17:00:02 -0700 From: Ortiz, Monica <mortiz(a)panasas.com> To: 'andystewart(a)comcast.net' <andystewart(a)comcast.net> June 23, 2005 Dear Mr. Stewart: Panasas invites you and Worcester LUG members to attend a complimentary, online seminar that describes how Stanford University's Institute for Computational and Mathematical Engineering (ICME) achieved exceptional performance and maximum utilization with its Linux cluster. In particular, the seminar will provide details on how the Institute combined Rocks software with an object-based storage system to increase the productivity of its cluster. Rocks Clusters and Object Storage Wednesday, June 29, 2005, 11:00 AM PDT http://panasasevents.webex.com Researchers at ICME use HPC as part of a comprehensive research program. These systems are used to better predict flutter and limit cycle oscillations for modern aircraft, to better understand the impact of turbulent flow on jet engines, and to develop computational methodologies that can facilitate the design of naval systems with lower signature levels. This research can lead to improvements in the performance and safety of aircraft, reduction of engine noise, which will improve the quality of life for people living near airports, and new underwater navigation systems. To accomplish this, ICME needed a cluster to tackle large-scale simulations of flow/structure interaction, aeroacoustic, and elasto-acoustic scattering problems. Join us in discussing how ICME utilized the 164-node Nivation Linux cluster and object-based storage to create a system that is scalable, easy to integrate and manage, and delivers extremely high bandwidth and random I/O. Register for this informative online seminar to: * Hear the challenges ICME faced in building a cluster capable of handling complex mathematical simulations * Learn how object storage systems, like those of Panasas, break I/O bottlenecks hindering cluster performance * Hear Steve Jones' personal experience in managing large-scale Rock clusters and the integration of the Panasas ActiveScale Storage Cluster Highlighted Speakers Steve Jones, Technology Operations Manager, Institute for Computational and Mathematical Engineering, Stanford University Larry Jones, Vice President of Product Marketing, Panasas Register Online Today! There are no fees for this event. To register, just point your browser to: http://panasasevents.webex.com Please let me know if you have any questions or trouble registering for this event. Monica Ortiz Events Coordinator Panasas, Inc. - -- 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 iD8DBQFCvGlzHl0iXDssISsRAjpEAJ9Vox3a4mALakBkB5lJB3cOR8fsVACfWnnF wKIi2NjUxHELanh2dfT4z84= =wP7M -----END PGP SIGNATURE-----

June 24, 2005

Re: [Wlug] HOWTO debug hard lockups

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Andy Stewart wrote: > > HI Jeff, > > If I do an alt-sysrq-h, I get the one line help on the serial console. > If I do alt-sysrq-m to show memory, I see "SysRq : Show Memory" ont the > serial console, but nothing more (unless I use Eric's trick). If I go > to runlevel 1, alt-sysrq-m has the entire output on the serial console. > > Later, > > Andy HI Everybody, The problem of the serial console not responding as I expected has been solved. It turns out that on my system, in /etc/sysconfig/syslog, the loglevel is set to 1. If it is set to 8, then all of the kernel messages will come out on the serial console. I set this with the MagicSysReq key and now it works as I expect. Many thanks to Jeff Moyer for his help with this problem. Later, Andy > > > > -- > Andy Stewart, Founder > Worcester Linux Users' Group > Worcester, MA, USA > http://www.wlug.org > _______________________________________________ Wlug mailing list Wlug(a)mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug - -- 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 iD8DBQFCugdJHl0iXDssISsRAq7FAJ9c93PzhdT2YAahG50wHRTKCkTOtgCeOCox ahEmSJk/eDlUH7JwXHZDiBE= =Q8ta -----END PGP SIGNATURE-----

June 23, 2005

Re: [Wlug] HOWTO debug hard lockups

by Jeff Moyer

==> Regarding Re: [Wlug] HOWTO debug hard lockups; Eric Martin <freak4uxxx(a)gmail.com> adds: freak4uxxx> Right, I forgot about that jeff. If you're running syslog-ng, freak4uxxx> you can go into /etc/syslog-ng/syslog-ng.conf and add a line: freak4uxxx> destination console_all { ("/dev/ttyS01"); }; freak4uxxx> although, I'm not sure if you're locking up if syslog-ng will freak4uxxx> keep scrolling. I don't know if netcat (nc) will either... syslog-ng is user space. The kernel should do all of its console writes itself. Your suggestion does not help in the hung system case. Netcat, used as I described (on the system that is receiving messages), is fine. The kernel is outputting the log messages over the network via the netpoll infrastructure. That infrastructure can function even when the system is not servicing interrupts. -Jeff freak4uxxx> On 6/21/05, Jeff Moyer <jmoyer(a)redhat.com> 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 Re: [Wlug] HOWTO debug hard lockups; Andy Stewart >> >> <andystewart(a)comcast.net> adds: >> >> andystewart> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >> >> andystewart> Eric Martin wrote: >> >>>> In reguards to seeing messages on minicom, what logger do you have >> >>>> installed? Can you just shovel kernel messages over to ttyS01? eg >> >>>> sudo tailf /var/log/kernel ttyS01 >> >> andystewart> I did that per your suggestion and it works just fine. >> >> Umm, it works just fine so long as the system is up and running. You >> >> really want the kernel to be printing directly to the console. >> >> Otherwise, when the system locks up and the NMI fires, you still won't >> >> get your messages over the serial console. >> >> >> >> Andy, it looked to me like you had things configured >> properly. Indeed, >> I use a very similar setup all of the time. The >> only difference is it >> works for me. (I hate that phrase). >> >> >> >> I'm not sure what to suggest at this point. If you do an alt-sysrq-h, >> >> does that at least print out over the serial console? >> >> >> >> -Jeff >> >> >> andystewart> HI Jeff, >> andystewart> If I do an alt-sysrq-h, I get the one line help on the serial andystewart> console. If I do alt-sysrq-m to show memory, I see "SysRq : andystewart> Show Memory" ont the serial console, but nothing more (unless andystewart> I use Eric's trick). If I go to runlevel 1, alt-sysrq-m has andystewart> the entire output on the serial console. >> You have all of the luck. How about trying netconsole? It's easy enough >> to setup. On the host which will receive the logs, do something like >> this: >> >> nc -u -l -p 6666 >> >> On the problematic system, load the netconsole module: >> >> modprobe netconsole >> netconsole=@<ip-of-this-machine>/<ethX>,6666@<ip-of-server>/<MAC-address-of-server> >> >> >> You can try this or not, depending on whether you still experience >> crashes. It sounds like the latest kernel fixed things right up for you, >> right? >> >> Oh well, good to have in your bag of tricks, I guess. >> >> -Jeff _______________________________________________ Wlug mailing list >> Wlug(a)mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug >> freak4uxxx> Right, I forgot about that jeff.  If you're running freak4uxxx> syslog-ng, you can go into /etc/syslog-ng/syslog-ng.conf and freak4uxxx> add a line: <div style="margin-left: 40px;"> style="font-style: italic;">destination console_all {  freak4uxxx> ("/dev/ttyS01"); }; </div> although, freak4uxxx> I'm not sure if you're locking up if syslog-ng will keep freak4uxxx> scrolling.  I don't know if netcat (nc) will freak4uxxx> either... style="font-style: italic;"> <div> class="gmail_quote">On 6/21/05, class="gmail_sendername">Jeff Moyer <<a freak4uxxx> href="mailto:jmoyer@redhat.com">jmoyer(a)redhat.com</a>> freak4uxxx> wrote:<blockquote class="gmail_quote" freak4uxxx> style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt freak4uxxx> 0pt 0pt 0.8ex; padding-left: 1ex;"> ==> Regarding Re: [Wlug] freak4uxxx> HOWTO debug hard lockups; Andy Stewart <<a freak4uxxx> href="mailto:andystewart@comcast.net">andystewart(a)comcast.net</a>> freak4uxxx> adds: andystewart> -----BEGIN PGP SIGNED MESSAGE----- freak4uxxx> Hash: SHA1 andystewart> Jeff Moyer freak4uxxx> wrote: >> ==> Regarding Re: [Wlug] HOWTO debug hard freak4uxxx> lockups; Andy Stewart >> <<a freak4uxxx> href="mailto:andystewart@comcast.net">andystewart(a)comcast.net</a>> freak4uxxx> adds: >> andystewart> -----BEGIN PGP SIGNED freak4uxxx> MESSAGE----- Hash: SHA1 >> andystewart> Eric freak4uxxx> Martin wrote: >>>> In reguards to seeing freak4uxxx> messages on minicom, what logger do you freak4uxxx> have >>>> installed?  Can you just freak4uxxx> shovel kernel messages over to ttyS01?  eg freak4uxxx> >>>> sudo tailf /var/log/kernel freak4uxxx> ttyS01 >> andystewart> I did that per your freak4uxxx> suggestion and it works just fine. >> Umm, it works freak4uxxx> just fine so long as the system is up and freak4uxxx> running.  You >> really want the kernel to freak4uxxx> be printing directly to the console. >> Otherwise, freak4uxxx> when the system locks up and the NMI fires, you still freak4uxxx> won't >> get your messages over the serial freak4uxxx> console. >> >> Andy, it looked to me like freak4uxxx> you had things configured freak4uxxx> properly.  Indeed, >> I use a very similar freak4uxxx> setup all of the time.  The only difference is freak4uxxx> it >> works for me.  (I hate that freak4uxxx> phrase). >> >> I'm not sure what to suggest freak4uxxx> at this point.  If you do an alt-sysrq-h, >> freak4uxxx> does that at least print out over the serial freak4uxxx> console? >> >> freak4uxxx> -Jeff >> andystewart> HI Jeff, freak4uxxx> andystewart> If I do an alt-sysrq-h, I get the one freak4uxxx> line help on the serial andystewart> freak4uxxx> console.  If I do alt-sysrq-m to show memory, I see freak4uxxx> "SysRq : andystewart> Show Memory" ont the freak4uxxx> serial console, but nothing more (unless andystewart> I freak4uxxx> use Eric's trick).  If I go to runlevel 1, freak4uxxx> alt-sysrq-m has andystewart> the entire output on the freak4uxxx> serial console. You have all of the luck.  How freak4uxxx> about trying netconsole?  It's easy enough to freak4uxxx> setup.  On the host which will receive the logs, do freak4uxxx> something like this: nc -u -l -p 6666 On the freak4uxxx> problematic system, load the netconsole module: modprobe freak4uxxx> netconsole freak4uxxx> netconsole=@<ip-of-this-machine>/<ethX>,6666@<ip-of-server>/<MAC-address-of-server> freak4uxxx> You can try this or not, depending on whether you freak4uxxx> still experience crashes.  It sounds like the freak4uxxx> latest kernel fixed things right up for freak4uxxx> you, right? Oh well, good to have in your bag of freak4uxxx> tricks, I guess. freak4uxxx> -Jeff _______________________________________________ Wlug freak4uxxx> mailing list <a freak4uxxx> href="mailto:Wlug@mail.wlug.org">Wlug(a)mail.wlug.org</a> <a freak4uxxx> href="http://mail.wlug.org/mailman/listinfo/wlug">http://mail.wlug.org/mailman/listinfo/wlug freak4uxxx> </a> </blockquote></div>

June 22, 2005

Re: [Wlug] HOWTO debug hard lockups

by Eric Martin

Right, I forgot about that jeff. If you're running syslog-ng, you can go into /etc/syslog-ng/syslog-ng.conf and add a line: destination console_all { ("/dev/ttyS01"); }; although, I'm not sure if you're locking up if syslog-ng will keep scrolling. I don't know if netcat (nc) will either... On 6/21/05, Jeff Moyer <jmoyer(a)redhat.com> 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 Re: [Wlug] HOWTO debug hard lockups; Andy Stewart > >> <andystewart(a)comcast.net> adds: > >> > andystewart> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > >> > andystewart> Eric Martin wrote: > >>>> In reguards to seeing messages on minicom, what logger do you have > >>>> installed? Can you just shovel kernel messages over to ttyS01? eg > >>>> sudo tailf /var/log/kernel ttyS01 > >> > andystewart> I did that per your suggestion and it works just fine. > >> Umm, it works just fine so long as the system is up and running. You > >> really want the kernel to be printing directly to the console. > >> Otherwise, when the system locks up and the NMI fires, you still won't > >> get your messages over the serial console. > >> > >> Andy, it looked to me like you had things configured properly. Indeed, > >> I use a very similar setup all of the time. The only difference is it > >> works for me. (I hate that phrase). > >> > >> I'm not sure what to suggest at this point. If you do an alt-sysrq-h, > >> does that at least print out over the serial console? > >> > >> -Jeff > >> > > andystewart> HI Jeff, > > andystewart> If I do an alt-sysrq-h, I get the one line help on the serial > andystewart> console. If I do alt-sysrq-m to show memory, I see "SysRq : > andystewart> Show Memory" ont the serial console, but nothing more (unless > andystewart> I use Eric's trick). If I go to runlevel 1, alt-sysrq-m has > andystewart> the entire output on the serial console. > > You have all of the luck. How about trying netconsole? It's easy enough > to setup. On the host which will receive the logs, do something like this: > > nc -u -l -p 6666 > > On the problematic system, load the netconsole module: > > modprobe netconsole > netconsole=@<ip-of-this-machine>/<ethX>,6666@<ip-of-server>/<MAC-address-of-server> > > > You can try this or not, depending on whether you still experience > crashes. It sounds like the latest kernel fixed things right up for you, > right? > > Oh well, good to have in your bag of tricks, I guess. > > -Jeff > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug >

June 22, 2005

Re: [Wlug] HOWTO debug hard lockups

by Jeff Moyer

==> 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 Re: [Wlug] HOWTO debug hard lockups; Andy Stewart >> <andystewart(a)comcast.net> adds: >> andystewart> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >> andystewart> Eric Martin wrote: >>>> In reguards to seeing messages on minicom, what logger do you have >>>> installed? Can you just shovel kernel messages over to ttyS01? eg >>>> sudo tailf /var/log/kernel ttyS01 >> andystewart> I did that per your suggestion and it works just fine. >> Umm, it works just fine so long as the system is up and running. You >> really want the kernel to be printing directly to the console. >> Otherwise, when the system locks up and the NMI fires, you still won't >> get your messages over the serial console. >> >> Andy, it looked to me like you had things configured properly. Indeed, >> I use a very similar setup all of the time. The only difference is it >> works for me. (I hate that phrase). >> >> I'm not sure what to suggest at this point. If you do an alt-sysrq-h, >> does that at least print out over the serial console? >> >> -Jeff >> andystewart> HI Jeff, andystewart> If I do an alt-sysrq-h, I get the one line help on the serial andystewart> console. If I do alt-sysrq-m to show memory, I see "SysRq : andystewart> Show Memory" ont the serial console, but nothing more (unless andystewart> I use Eric's trick). If I go to runlevel 1, alt-sysrq-m has andystewart> the entire output on the serial console. You have all of the luck. How about trying netconsole? It's easy enough to setup. On the host which will receive the logs, do something like this: nc -u -l -p 6666 On the problematic system, load the netconsole module: modprobe netconsole netconsole=@<ip-of-this-machine>/<ethX>,6666@<ip-of-server>/<MAC-address-of-server> You can try this or not, depending on whether you still experience crashes. It sounds like the latest kernel fixed things right up for you, right? Oh well, good to have in your bag of tricks, I guess. -Jeff

June 21, 2005

Re: [Wlug] HOWTO debug hard lockups

by Andy Stewart

-----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> Eric Martin wrote: >>>In reguards to seeing messages on minicom, what logger do you have >>>installed? Can you just shovel kernel messages over to ttyS01? eg sudo >>>tailf /var/log/kernel ttyS01 > > andystewart> I did that per your suggestion and it works just fine. > > Umm, it works just fine so long as the system is up and running. You > really want the kernel to be printing directly to the console. Otherwise, > when the system locks up and the NMI fires, you still won't get your > messages over the serial console. > > Andy, it looked to me like you had things configured properly. Indeed, I > use a very similar setup all of the time. The only difference is it works > for me. (I hate that phrase). > > I'm not sure what to suggest at this point. If you do an alt-sysrq-h, does > that at least print out over the serial console? > > -Jeff > HI Jeff, If I do an alt-sysrq-h, I get the one line help on the serial console. If I do alt-sysrq-m to show memory, I see "SysRq : Show Memory" ont the serial console, but nothing more (unless I use Eric's trick). If I go to runlevel 1, alt-sysrq-m has the entire output on the serial console. 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 iD8DBQFCuI64Hl0iXDssISsRAgYoAJwO2tnZkw6ox+URA61Lh16lyUhE4wCeOedC wQJZTh9CV8pUFPfEHkDYjw8= =H2Yg -----END PGP SIGNATURE-----

June 21, 2005

Yellow Dog Linux

by Stephen Ketcham

I've just set up my Mac G4 Powerbook to boot Yellow Dog Linux 4.0.1. (It dual boots, so it also runs Mac OS X.) is there anybody else on the list running Yellow Dog? Thanks, Steve

June 21, 2005