From zooko at zooko.com Wed Jul 1 16:49:12 2009 From: zooko at zooko.com (Zooko Wilcox-O'Hearn) Date: Wed, 1 Jul 2009 16:49:12 -0600 Subject: [NCLUG] Tahoe-LAFS debugged Message-ID: <80B9F806-D138-489F-ABA4-E49D6FE59281@zooko.com> It was indeed a bug in the current trunk of Tahoe (which I demoed at NCLUG at the last meeting) which wasn't present in the most recent release of Tahoe, just as Brad suggested at the time. It wasn't caught by the unit tests because the unit tests use a fake object to simulate the remote servers and that fake object happened to work in a way that real servers don't. It is now fixed, so the upcoming v1.5 release of Tahoe-LAFS will not have this bug. Here is the issue ticket: http://allmydata.org/trac/tahoe/ticket/732 # Not Enough Shares when repairing a file which has 7 shares on 2 servers Regards, Zooko From bsimpson at att.net Mon Jul 6 18:33:22 2009 From: bsimpson at att.net (bsimpson at att.net) Date: Tue, 07 Jul 2009 00:33:22 +0000 Subject: [NCLUG] Slow Firefox on Fedora 11 Message-ID: <070720090033.20139.4A5297D20008059500004EAB22243651029B0A02D29B9B0EBF02019C9F03079C0D@att.net> I've just installed Fedora 11 and I'm having an annoying lag when going to a web page. For example, if I type in "www.android.com" in the location slot at the top of the Firefox window and press Enter, nothing happens for several seconds other than the display of a "Looking up www.android.com..." message in the status area at the bottom of the window. The delay can be over 4 seconds. If the page brings in info from other locations I'll experience similar delays. When I start nslookup and try different addresses, the response is immediate. I also get a quick response if I enter an IP address into Firefox. Has anyone had this problem, or can suggest a way of debugging the cause? Some info on my system: My computer is a Dell Inspiron 530s connected via ethernet to a Linksys WRT54G2 router, which is connected to a cable modem going to Comcast. Firefox is configured for no proxy. The version of Firefox is 3.5 (upgraded from the 3.5 beta that came with Fedora 11 which had the same problem). Other OS's on the same machine, Vista, Fedora 8, Kubuntu, have no delay when going to a web page. Any help greatly appreciated. Thanks. Brian S From bob at proulx.com Mon Jul 6 20:12:46 2009 From: bob at proulx.com (Bob Proulx) Date: Mon, 6 Jul 2009 20:12:46 -0600 Subject: [NCLUG] Slow Firefox on Fedora 11 In-Reply-To: <070720090033.20139.4A5297D20008059500004EAB22243651029B0A02D29B9B0EBF02019C9F03079C0D@att.net> References: <070720090033.20139.4A5297D20008059500004EAB22243651029B0A02D29B9B0EBF02019C9F03079C0D@att.net> Message-ID: <20090707021246.GA4466@dementia.proulx.com> bsimpson at att.net wrote: > When I start nslookup and try different addresses, the response > is immediate. I also get a quick response if I enter an IP > address into Firefox. > > Has anyone had this problem, or can suggest a way of debugging > the cause? A Guess: I have heard that some people have had problems with Firefox querying names twice. Once for ipv4 and once for ipv6 with a 5 second timeout delay when querying ipv6. You might try setting network.dns.disableIPv6 to true in about:config. If that solves the problem then that is the problem that you are having. But the best solution is probably a correction to the ipv6 configuration instead of simply disabling it in Firefox. But I haven't had the problem myself and so don't know the best fix for it. For other debugging I would want a couple of other pieces of information. Can't hurt to ask. What are the contents of /etc/resolv.conf and /etc/nsswitch.conf? cat /etc/resolv.conf grep hosts /etc/nsswitch.conf Bob From bsimpson at att.net Mon Jul 6 20:43:26 2009 From: bsimpson at att.net (bsimpson at att.net) Date: Tue, 07 Jul 2009 02:43:26 +0000 Subject: [NCLUG] Slow Firefox on Fedora 11 In-Reply-To: <20090707021246.GA4466@dementia.proulx.com> References: <070720090033.20139.4A5297D20008059500004EAB22243651029B0A02D29B9B0EBF02019C9F03079C0D@att.net> <20090707021246.GA4466@dementia.proulx.com> Message-ID: <070720090243.27681.4A52B64E00014CDA00006C2122243323629B0A02D29B9B0EBF02019C9F03079C0D@att.net> Bob, -------------- Original message from Bob Proulx : -------------- > bsimpson at att.net wrote: > > When I start nslookup and try different addresses, the response > > is immediate. I also get a quick response if I enter an IP > > address into Firefox. > > > > Has anyone had this problem, or can suggest a way of debugging > > the cause? > > A Guess: I have heard that some people have had problems with Firefox > querying names twice. Once for ipv4 and once for ipv6 with a 5 second > timeout delay when querying ipv6. You might try setting > network.dns.disableIPv6 to true in about:config. If that solves the > problem then that is the problem that you are having. But the best > solution is probably a correction to the ipv6 configuration instead of > simply disabling it in Firefox. But I haven't had the problem myself > and so don't know the best fix for it. > > For other debugging I would want a couple of other pieces of > information. Can't hurt to ask. What are the contents of > /etc/resolv.conf and /etc/nsswitch.conf? > > cat /etc/resolv.conf > > grep hosts /etc/nsswitch.conf > > Bob THANK YOU!!! I set network.dns.disableIPv6 to true in about:config, and now I have a usable browser! No more delays! Of course, if this isn't the preferred fix, perhaps someone can suggest a fix to my ipv6 configuration. Not sure if the following information is needed now, but "cat /etc/resolv.conf" yields: # Generated by NetworkManager domain hsd1.co.comcast.net. search hsd1.co.comcast.net. nameserver 68.87.85.102 nameserver 68.87.69.150 and "grep hosts /etc/nsswitch.conf" yields: #hosts: db files nisplus nis dns hosts: files mdns4_minimal [NOTFOUND=return] dns Thanks again Bob! Brian S From jafo at tummy.com Mon Jul 6 20:52:19 2009 From: jafo at tummy.com (Sean Reifschneider) Date: Mon, 06 Jul 2009 20:52:19 -0600 Subject: [NCLUG] Slow Firefox on Fedora 11 In-Reply-To: <070720090243.27681.4A52B64E00014CDA00006C2122243323629B0A02D29B9B0EBF02019C9F03079C0D@att.net> References: <070720090033.20139.4A5297D20008059500004EAB22243651029B0A02D29B9B0EBF02019C9F03079C0D@att.net> <20090707021246.GA4466@dementia.proulx.com> <070720090243.27681.4A52B64E00014CDA00006C2122243323629B0A02D29B9B0EBF02019C9F03079C0D@att.net> Message-ID: <4A52B863.30901@tummy.com> On 07/06/2009 08:43 PM, bsimpson at att.net wrote: > I set network.dns.disableIPv6 to true in about:config, and now I > have a usable browser! No more delays! Nice that that fixed it. Note that I haven't had any such issues with firefox on my F11 system. > hosts: files mdns4_minimal [NOTFOUND=return] dns That might not be what you want. On my F11 system it's: hosts: files dns If it's not causing problems, you can probably leave it. If you are using zero-conf/bonjour/avahi for anything, then you definitely need to leave it. I'd be tempted to disable it if it were me, but I'm not using zero-conf. Sean -- Sean Reifschneider, Member of Technical Staff tummy.com, ltd. - Linux Consulting since 1995: Ask me about High Availability -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 252 bytes Desc: OpenPGP digital signature Url : http://www.nclug.org/pipermail/nclug/attachments/20090706/8f785a77/attachment.pgp From jdewitt at verinet.com Fri Jul 10 17:19:04 2009 From: jdewitt at verinet.com (James DeWitt) Date: Fri, 10 Jul 2009 17:19:04 -0600 Subject: [NCLUG] July 14th NCLUG Meeting Message-ID: <200907101719.04293.jdewitt@verinet.com> Hi NCLUGers, What: NCLUG Meeting When: Tuesday July 14th , 6pm Where: College America, 4601 S Mason St, at Harmony (map at nclug.org) Food afterwards: South China (next door) Presenter: Nwanua Elumeze from aniomagic.com Topic: Wearable devices, sensors and conductive fabrics, etc. "I'll bring some nifty stuff (mostly wearable) that you guys might find interesting. I've also been working on a javascript-based scheme interpreter for wearable devices: http://www.aniomagic.com/schemer" See you there! -- James DeWitt From jdewitt at verinet.com Wed Jul 15 00:49:53 2009 From: jdewitt at verinet.com (James DeWitt) Date: Wed, 15 Jul 2009 00:49:53 -0600 Subject: [NCLUG] Interested in speaking at NCLUG on 7/14? In-Reply-To: <1b42ad944a2d63072385da11ddaf0259@aniomagic.com> References: <200907020045.21817.jdewitt@verinet.com> <200907141641.50972.jdewitt@verinet.com> <1b42ad944a2d63072385da11ddaf0259@aniomagic.com> Message-ID: <200907150049.54071.jdewitt@verinet.com> Hi Nwanua, No problem. Thank you for coming to talk to us. James On Tuesday 14 July 2009 23:05:09 you wrote: > Hi James, > > Thanks again for the chance to come up and talk about some of my work. > If you could, could you please send this to the LUG? It's a video of a > (prototype) lego robot car reading barcodes on the floor and executing > the instructions: > > http://www.youtube.com/watch?v=wQ90Ae32iJs > > Thanks! > Nwanua From jafo at tummy.com Wed Jul 15 15:12:44 2009 From: jafo at tummy.com (Sean Reifschneider) Date: Wed, 15 Jul 2009 15:12:44 -0600 Subject: [NCLUG] Interested in speaking at NCLUG on 7/14? In-Reply-To: <200907150049.54071.jdewitt@verinet.com> References: <200907020045.21817.jdewitt@verinet.com> <200907141641.50972.jdewitt@verinet.com> <1b42ad944a2d63072385da11ddaf0259@aniomagic.com> <200907150049.54071.jdewitt@verinet.com> Message-ID: <4A5E464C.1080402@tummy.com> On 07/15/2009 12:49 AM, James DeWitt wrote: > No problem. Thank you for coming to talk to us. Yeah, thanks so much for filling in at the last minute. I was the one who had made the initial invitation. I'm the one that was sitting in the very back (nothing personal, there were just more women back there :-), complaining about premature optimization. Thanks for the presentation, I thought it was great and everyone I've talked to also really enjoyed it. Sean -- Sean Reifschneider, Member of Technical Staff tummy.com, ltd. - Linux Consulting since 1995: Ask me about High Availability -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 252 bytes Desc: OpenPGP digital signature Url : http://www.nclug.org/pipermail/nclug/attachments/20090715/39595623/attachment.pgp From jamieleben at gmail.com Thu Jul 16 15:29:09 2009 From: jamieleben at gmail.com (Jamie Leben) Date: Thu, 16 Jul 2009 15:29:09 -0600 Subject: [NCLUG] Help setting up FC10 with static IP on Qwest DSL Message-ID: If you are interested in helping someone in Greeley with setting up his FC10 machine with a static IP on Qwest DSL, please email minesm at me.com From mrgenixus at gmail.com Thu Jul 16 16:44:17 2009 From: mrgenixus at gmail.com (Ben West) Date: Thu, 16 Jul 2009 16:44:17 -0600 Subject: [NCLUG] Help setting up FC10 with static IP on Qwest DSL In-Reply-To: References: Message-ID: I"m available daytime by phone, what exactly are this person's needs? On Thu, Jul 16, 2009 at 3:29 PM, Jamie Leben wrote: > If you are interested in helping someone in Greeley with setting up his > FC10 > machine with a static IP on Qwest DSL, please email minesm at me.com > _______________________________________________ > NCLUG mailing list NCLUG at nclug.org > > To unsubscribe, subscribe, or modify > your settings, go to: > http://www.nclug.org/mailman/listinfo/nclug > -- /?m?st?r/ /?d??n?s?s/@/d?i/ /me?l/ /d?t/ /k?m/ Benjamin West From mriversong at earthlink.net Thu Jul 16 20:48:28 2009 From: mriversong at earthlink.net (Michael Riversong) Date: Thu, 16 Jul 2009 22:48:28 -0400 (EDT) Subject: [NCLUG] Tesla Weekend in Philadelphia Message-ID: <17963157.1247798908954.JavaMail.root@mswamui-cedar.atl.sa.earthlink.net> We had a really great weekend celebrating the life of Nikola Tesla here in Philadelphia. Of course he was one of the greatest scientists and inventors ever, and someone who should be a part of any good homeschool curriculum. A full report on the conference activities has been posted at: http://www.nikolateslainventorsclub.com Also, a petition to have Tesla canonized through the Serbian Orthodox Church is at: http://st-tesla.com/ Keep in mind that Tesla made all our computer systems possible, and that he was in his way a promoter of Open Source. Michael Riversong Cheyenne, Wyoming Beautiful Music for the whole universe! http://home.earthlink.net/~mriversong From blc+nclug at mail.vanade.com Sat Jul 25 08:21:01 2009 From: blc+nclug at mail.vanade.com (Benson Chow) Date: Sat, 25 Jul 2009 08:21:01 -0600 (MDT) Subject: [NCLUG] Fun and Action(tec)? Message-ID: I was wonderring where I could find an audience for people who have Qwest DSL and mucked with their Actiontec routers, and well, this may be the right mailing list. After many years with Qwest DSL, I'm no longer Cisco bound. After a Cisco 675 got obsoleted by DMT, and a Cisco 678 was deemed obsolete by Qwest when I complained of instability in my DSL, I got an Actiontec GT701 from them. All the better... yet another Linux box to play with! The behavior of the GT701 is what I'm kind of concerned with. First off I have a /29 static IP block I'm using with the 'modem'. The two issues I'm having: 1 - I've been trying to get this router to route both my /29 and my 10.0.0.x subnets so I can firewall off my wifi, but the best I've gotten was that my 10.0.0.x subnet would get packets mangled when trying to communicate to my /29 subnet. It is partially due to having most of my /29 machines also having a 10.0.0.x address, but it looks like the GT701 is routing my 10.0.0.x addresses as real addresses instead of NATting them when dealing with my /29. I'm still using my WRT54G for NAT for now, but once again, for better security I'd like to separate my wifi (and perhaps keep it in hotspot mode and do away with WEP...) 2 - My GT701 does not seem to respond properly with traceroutes. I'm not sure what layer of the IP stack should be handling these. I tried telnetting into the router and it looks like a fairly usual Linux machine with a (ugh) stripped down busybox. So usual, I've been thinking about building custom firmware for it as I'd like it to syslog to my server and shut off all the unnecessary DNS lookups it seems to do... Anyone have fun with their GT701? Thanks, -Benson From marciot at yahoo.com Sat Jul 25 10:31:46 2009 From: marciot at yahoo.com (Marcio Luis Teixeira) Date: Sat, 25 Jul 2009 09:31:46 -0700 (PDT) Subject: [NCLUG] Fun and Action(tec)? In-Reply-To: References: Message-ID: <538526.69182.qm@web65511.mail.ac4.yahoo.com> > Anyone have fun with their GT701? No, but I do manage a GT701 at work, and at home, so anything you learn about these beasts I would like to know about! I haven't done any hacking with these boxes, I'm pretty much an amateur when it comes to those. In fact, it was only last week I found out you could telnet into these boxes, and that you could get to the logs that way (or by using the hidden URL http://address/utilities/support) and that was *way* cool to know. If you do figure out how to get syslog working, I'ld be all over that, since one of the things I am trying to get done at work is set up centralized logging so that the bloody diagnostic logs aren't stored on twenty zillion different devices. -- Marcio From bob at proulx.com Sun Jul 26 17:34:31 2009 From: bob at proulx.com (Bob Proulx) Date: Sun, 26 Jul 2009 17:34:31 -0600 Subject: [NCLUG] Fun and Action(tec)? In-Reply-To: References: Message-ID: <20090726233431.GA10773@dementia.proulx.com> Benson Chow wrote: > I was wonderring where I could find an audience for people who have Qwest > DSL and mucked with their Actiontec routers, and well, this may be the > right mailing list. I have Qwest DSL. I have had the Cisco 675 modem and am now using the Cisco 678. The Cisco 678 is still operating acceptably for me. It has only been acceptable and not great because it has not been without problems in terms of capability. It has been reliable enough. But for me it the 678 wasn't as capable as the 675 in terms of routing and this appeared to be a firmware issue. One day I would like to upgrade to a more capable device and a linux based router would be a nice upgrade. > After many years with Qwest DSL, I'm no longer Cisco bound. After a > Cisco 675 got obsoleted by DMT, and a Cisco 678 was deemed obsolete > by Qwest when I complained of instability in my DSL, I got an > Actiontec GT701 from them. All the better... yet another Linux box > to play with! Yeah! :-) > The behavior of the GT701 is what I'm kind of concerned with. First off I > have a /29 static IP block I'm using with the 'modem'. The two issues I'm > having: > > 1 - I've been trying to get this router to route both my /29 and my > 10.0.0.x subnets so I can firewall off my wifi, but the best I've gotten > was that my 10.0.0.x subnet would get packets mangled when trying to > communicate to my /29 subnet. It is partially due to having most > of my /29 machines also having a 10.0.0.x address, but it looks like the > GT701 is routing my 10.0.0.x addresses as real addresses instead of > NATting them when dealing with my /29. I'm still using my WRT54G for NAT > for now, but once again, for better security I'd like to separate my > wifi (and perhaps keep it in hotspot mode and do away with WEP...) Your description isn't sufficient for me to understand your network topology. With so little information I hesitate to jump in. But throwing caution to the wind and knowing that others will correct me I am going to give it a shot. One thing you said ("routing my 10.0.0.x addresses as real addresses") makes me wonder if your router is configured for _one_ of DNAT or SNAT but in your configuration you need both DNAT *and* SNAT configured for it. Or if you need a gateway configured and do not have one. Network address translation is implemented with a variety of algorithms and has different effects on internet devices. Let me expand on that a little. Let's say you have 208.77.188.166 as your external wan address with a /29. Internet <---> 208.77.188.166/29|Router|10.0.0.1 <---> 10.0.0.42|Toaster A packet arrives. (Assume A.B.C.D is some random address out on the Internet.) SRC: A.B.C.D # Some Internet Address DST: 208.77.188.166 # Your external WAN address Normally NAT would just be destination nat and would translate 208.77.188.166 to 10.0.0.42. SRC: A.B.C.D DST: 10.0.0.42 And then it is routed on to the Toaster. The Toaster will see the real address A.B.C.D. It will respond with a packet of its own. SRC: 10.0.0.42 DST: A.B.C.D This goes through the Toaster's routing table. Since A.B.C.D isn't on the local subnet of any network interface it falls to the default gateway to route. If the Toaster has a default gateway. In which case it then is routed to the Router. The Router then masquerades the internal network address into its external network address. SRC: 208.77.188.166 DST: A.B.C.D The Internet is only exposed to the 208.77.188.166 address and never the 10.0.0.42 address. The Toaster device is however exposed to the A.B.C.D Internet address. Which means that the Toaster must have a routing table entry that can route to it. I ran into this very same problem while working with a Toaster device that wasn't programmed with a default route. It was constrained that it could only talk to devices on the internal network and (apparently) no one actually thought about needing a route for addresses off of the local network. I needed both destination NAT and source NAT. In which case that same packet: SRC: A.B.C.D DST: 208.77.188.166 That packet arrives and is now has both addresses translated. SRC: 10.0.0.1 DST: 10.0.0.42 Then the Toaster device responds. SRC: 10.0.0.42 DST: 10.0.0.1 Then the Router performs the reverse NAT on both addresses. SRC: 208.77.188.166 DST: A.B.C.D Your problem sounded similar to this case. But I couldn't tell. In which case you might need to set up SNAT too. Or you might need to verify that your internal clients have a default gateway set. Maybe. > 2 - My GT701 does not seem to respond properly with traceroutes. I'm not > sure what layer of the IP stack should be handling these. Traceroute creates ICMP ping packets using the time-exceeded message type. If you are blocking ICMP then this will block traceroute. It is sufficient to allow icmp time-exceeded messages to enable traceroute. (Note that ping uses icmp echo-request.) > I tried telnetting into the router and it looks like a fairly usual Linux > machine with a (ugh) stripped down busybox. So usual, I've been thinking With so little memory and storage available on the machine it is typical to use the most stripped down images. Unfortunately the standard GNU tools have become so bloated that they are usually replaced with the leaner busybox. However I think a compiling of the old V7 tools would be more appropriate. > about building custom firmware for it as I'd like it to syslog to my > server and shut off all the unnecessary DNS lookups it seems to do... > > Anyone have fun with their GT701? If any of the normal distributions such as OpenWRT, DD-WRT, Tomato, or other distributions work that would be interesting to me. I might want to upgrade in that case! I figure the GT701 hasn't really matured yet as I could not find a Wikipedia page on it. :-/ Bob