- Roundtable - muug.ca

*Free to Choose* Your Pocket Reference - Only $4.99 - Two Days Only
by Gilbert E. Detillieux 17 Apr '12

17 Apr '12

FYI... ------------------------------------- View in browser <http://post.oreilly.com/rd/9z1zqo75ejjg197s023upmi4sp9v621lqn80dnpor68>. O'Reilly - Books and Videos Free to Choose Your Pocket Reference/Guide Exclusive $4.99 Ebooks - Two Days Only Books in the deal <http://post.oreilly.com/rd/9z1zkoaq46slklddrn78b0h49l42iqc05m3o57fjts0> O'Reilly's Pocket References and Pocket Guides are comprehensive, inexpensive, compact, and easy to use. The Pocket References provide quick lookup of *programming details and web syntax*, while the Pocket Guides are *focused tutorials* on the basics of new technology and valuable *power user tips*. Not only do they fit your budget, they fit in your back pocket, too. Includes new edition of /JavaScript Pocket Reference/, by David Flanagan, plus over 85 more titles. Ebooks from oreilly.com <http://post.oreilly.com/rd/9z1zt4312l48gjamhbihcippq1isd10u23buabe93h0> are *DRM-free*. You get *free lifetime access, multiple file formats, free updates.* View the Titles <http://post.oreilly.com/rd/9z1z1dqp5igtfjeo1eegm65svbkq4g6mca48onmc900> This deal expires April 18, 2012 at 11:59pm PT, and cannot be combined with other offers. Spreading the knowledge of innovators. oreilly.com <http://post.oreilly.com/rd/9z1zh5ojjip3avojguntctj8rpa31kgl74et046bqpg> You are receiving this message because you purchased directly from O'Reilly or registered titles. Keep up on all things O'Reilly by signing up for our *email alerts and newsletters* <http://post.oreilly.com/rd/9z1zuloa4l7ro7kotdaurtc9s6cgqbhpiqlsm0eb0u0>. To ensure delivery to your inbox (not bulk or junk folders), please add *oreilly(a)post.oreilly.com* <mailto:oreilly@post.oreilly.com> to your address book. To unsubscribe from all email announcements from O'Reilly, click here <http://post.oreilly.com/rd/9z1zmmqutpdoprv5njrfevfgb8o7ljhl6hpncrjjqr8>. O'Reilly Media, Inc. 1005 Gravenstein Highway North, Sebastopol, CA 95472 (707) 827-7000

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Call to order
by Brian Doob 11 Apr '12

11 Apr '12

I think every MUUG member should have a copy of this.... http://dl.dropbox.com/u/69806633/eh-hm.wav

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Get a Head Start on IPv6 Integration - Save 50% on Related Ebooks
by Gilbert E. Detillieux 09 Apr '12

09 Apr '12

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Opinion on digital tuner hardware
by Mike pfaiffer 09 Apr '12

09 Apr '12

I saw an article on Slashdot the other day which suggested it might be possible to get some hardware using the RTL2832U chipset for $11.00. A quick search of Google seems to indicate it is fairly well supported with Linux. Since the article was about Software Defined Radio (HF) rather than the TV part of the device I was wondering if anybody locally had tried it out... I would guess apart from the article, the only info I'd be able to get would be about the TV part. What are the ranges of the chipset? How reliable is it? One fellow from the Seniors Radio Club suggested a kit for around $20.00 which should have a similar range (minus the TV). Is the idea even worth following up? I think for around $11.00 it would be a good introduction to SDR and digital TV. Later Mike

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Winnipeg Harvest donations from December meeting - thank you!
by athompso＠muug.mb.ca 04 Apr '12

04 Apr '12

Thanks to the generosity of our members, we were able to donate three large boxes’ worth of non-perishable food items to Winnipeg Harvest in December 2010. The text of the thank-you letter we just received (see attached) is as follows: January 5, 2011 Manitoba UNIX User Group Attn: Adam Thompson Dear Friends of Harvest, We here at Winnipeg Harvest want to thank the Manitoba UNIX User Group for your support of helping those less fortunate in our community. Over the last few months 743 pounds of food was donated to the food bank. Your donations will go into hampers that will help Winnipeg Harvest feed more than 58,000 people each month, half of those being children. On behalf of the entire team at Winnipeg Harvest, thank you for helping us fight hunger and feed hope in Manitoba. We look forward to working with you again in the future. If I can ever be of assistance, please don’t hesitate to contact me by phone at 982-3670 or by email at tori(a)winnipegharvest.org. Yours truly, Tori Webber Development Associate Winnipeg Harvest Inc. So, thanks again. See you all in another six (6) days, at our next meeting on January 11th, 2011. -Adam Thompson athompso(a)muug.mb.ca

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MUUG Meeting, Apr 10, 7:30pm -- pfSense Firewall
by gedetil＠cs.umanitoba.ca 03 Apr '12

03 Apr '12

The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting on Tuesday, April 10. The meeting topic for this month is as follows: pfSense Firewall Adam Thompson will talk about (and demonstrate, if all goes well) pfSense, a wholly UNIX-based network firewall and network services appliance that can run on anything from embedded devices up to the latest super-servers. pfSense is based on FreeBSD, and thus uses the pf(4) packet filtering framework from OpenBSD to do most of the heavy lifting. Supporting multi-WAN, HTTP acceleration, DNS, DHCP, authentication, and wireless NIC's among other features, it's an ideal system for someone who wants a free, open-source firewall that's still incredibly easy to manage. April's RTFM will feature the date(1) command, presented by Michael Doob. The group holds its general meetings at 7:30pm on the second Tuesday of every month from September to June. (There are no meetings in July and August.) Meetings are open to the general public; you don't have to be a MUUG member to attend. ********************************************************************** Please note our meeting location: The IBM offices, at 400 Ellice Ave. (between Edmonton and Kennedy). When you arrive, you will have to sign in at the reception desk, and then wait for someone to take you (in groups) to the meeting room. Please try to arrive by about 7:15pm, so the meeting can start promptly at 7:30pm. Don't be late, or you may not get in. (But don't come too early either, since security may not be there to let you in before 7:15 or so.) Non-members may be required to show photo ID at the security desk. Limited parking is available for free on the street, either on Ellice Ave. or on some of the intersecting streets. Indoor parking is also available nearby, at Portage Place, for $5.00 for the evening. Bicycle parking is available in a bike rack under video surveillance located behind the building on Webb Place. ********************************************************************** For more information about MUUG, and its monthly meetings, check out their Web server: http://www.muug.mb.ca/ Help us promote this month's meeting, by putting this poster up on your workplace bulletin board or other suitable public message board: http://www.muug.mb.ca/meetings/MUUGmeeting.pdf -- Gilbert E. Detillieux E-mail: <gedetil(a)muug.mb.ca> Manitoba UNIX User Group Web: http://www.muug.mb.ca/ PO Box 130 St-Boniface Phone: (204)474-8161 Winnipeg MB CANADA R2H 3B4 Fax: (204)474-7609

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UG News - Free, Live Webcasts: Best of Velocity, Mobile Dev, jQuery In-Depth, Kinect, Netduino, and More
by Gilbert E. Detillieux 02 Apr '12

02 Apr '12

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CIRA caching ancient glue records.
by Sean Cody 02 Apr '12

02 Apr '12

I'm having a strange issue (for a couple years) in that when my NS server change IPs (once every 2-3 years as I change ISPs) CIRA doesn't change it's glue records accordingly. For instance... I move my NS servers ns1 and ns2 and of course their IPs change.. ns1.domain.ca 172.16.101.1 ns2.domain.ca 172.16.101.2 I will log into my registrar and try and have them update the zone (the two registrars I use have different behaviour). After a day or so I can see the whois info changes yet the OLD IPs for ns1 and ns2 persist. To get around this I have to come up with 'new' names for the DNS servers... I've so far used up: ns1,ns2.$domain a.ns,b.ns.$domain dnsa,dnsb.$domain nsa,nsb.$domain Does anyone have any suggestion on how I can ask cira to just flush all glue records so I can go back to my preferred NS names? Taking out this root domain nerfs about a dozen other domains. I'm about to just start chosing random strings for the NS server names but it is a bit much to ask folks to update their NS to joiafjsdpfoij.$domain.com. :P This behaviour persists across multiple .ca registrars which leads me to believe something at CIRA is not being reset properly (ie. when registrar does a zone update they are not requesting a flush or something...). I suppose I _could_ try moving my root domain to another registrar but again that will take me offline yet again and induce another bout of DNS rage. -- Sean P.S. Support at either canreg or domainsatcost has not been _any_ help so far.

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ZFS I/O strangeness
by Adam Thompson 02 Apr '12

02 Apr '12

I have a ZFS RAIDZ3 filesystem under OpenSolaris (actually a Nexenta build so a GNU userland on top of OpenSolaris kernel). "dd if=filename of=/dev/null bs=8k" gives me ~66Mbytes/sec. "cat filename | dd of=/dev/null bs=8k" gives me ~142Mbytes/sec. WTF? Why would using cat *increase* the overall speed? The only thing I can think of is readahead, but why would cat cause that to happen while dd doesn't? -Adam Thompson athompso(a)athompso.net

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Re: [RndTbl] NFSv4 locking problem
by Adam Thompson 30 Mar '12

30 Mar '12

Dunno. I've actually gone back to v3 everywhere I use nfs because v4 just seems too hard to make work properly with Linux. -Adam Trevor Cordes <trevor(a)tecnopolis.ca> wrote: >A recent update (kernel, or something else) seems to have messed up file >locking over NFSv4 on my system (yes, v4 allows for locking). > >I use locking in perl scripts over NFS and it's always worked until now. >I checked and lockd is running on the server still. > >A test case is at the bottom of this email. The problem hits on line 13 >where the open-for-write happens. It dies with "Input/output error". > >The client's /v/l/messages says: >[156474.509107] nfs4_reclaim_open_state: Lock reclaim failed! > >If I run this on a local file, not over NFS, it works fine. > >I'm using the lock functions as the sample code in the perl docs >instructs. My goal is to lock a file, read it, do things, and write it >out, all atomically. Mostly I want to protect against another instance of >the same program doing the same thing at the same time and screwing up the >file. > >My NFS server is a an older linux (Fedora 14) than the client (Fedora 16), >but the NFSv4 spec hasn't really changed in that span. > >#!/usr/bin/perl -w ># >use Fcntl ':flock'; > >$file='/data/Tmp/locktest'; > >open(LOCK,$file) or die; >flock(LOCK,LOCK_EX); > >open(IN,$file) or die; ># read from file >close(IN); > >open(ORI,">$file") or die $!; # dies here!!!!!!!!!!!!1 ># write to file >close(ORI); > >flock(LOCK,LOCK_UN); >_______________________________________________ >Roundtable mailing list >Roundtable(a)muug.mb.ca >http://www.muug.mb.ca/mailman/listinfo/roundtable >

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