Search results for "meeting" - WLUG

Re: Dec meeting.. not the 14th! 21st or 28th?

by Robert Schwein

You've pretty much hit the high points Chuck. From my own experience when going overseas if I'm able to VPN to the country I'm going to, the rental car reservation is considerably less in cost to reserve that car than if I reserved it from state side. I'm assuming there is a difference between a poor native and a rich American. Bob On 12/8/2023 12:56 AM, Chuck Anderson via WLUG wrote: > On Thu, Dec 07, 2023 at 09:08:00PM -0500, Doug Mildram via WLUG wrote: >> So, maybe or maybe not, that's the kind of VPN I suspect they're selling, >> but I don't see the value for normal folks....or maybe anyone. (educate >> me!) >> Unless their hosted-server-world-route network security is a win. >> Thanks for listening, and my thursday's look better than usual this month, >> so hoping for WLUG virtually dec 14. -doug > Yes. Those "modern" VPNs are used for many reasons. Here are a couple: > > - To appear to servers/services that you are physically located in a > different geographical area. This can help you bypass > geographically restricted content, such as watching sports programs > that content owners don't want you to see based on where you live > (local sports broadcast blackouts). Or trick hotels into giving you > a better price--yes, hotels can hike the rates they present to you > if they think you are nearby--assuming you need last-minute > accomodations while you are away on vacation. > > - To hide your real IP address from servers and/or hide your browsing > from intermediaries (your ISP for example) for privacy. This could > be so you can avoid being tracked and having your browsing habits > sold to advertisers (something your ISP can easily do--SSL does not > hide DNS queries although that is changing with the availability of > DNS-over-HTTPS and similar), to hide from authorities/copyright > enforcers, or for life-and-death reasons (hide from unfriendly > governments.) > _______________________________________________ > WLUG mailing list --wlug(a)lists.wlug.org > To unsubscribe send an email towlug-leave(a)lists.wlug.org > Create Account:https://wlug.mailman3.com/accounts/signup/ > Change Settings:https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive:https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org…

Dec. 8, 2023

Re: [Wlug] Wlug Digest, Vol 110, Issue 5

by Frank Sweetser

At tech now. joel d <joelgroup(a)gmail.com> wrote: >Came late. > >Did I miss it? > >Tech pizza? > >Other location? > >Thank you, > >Joel > On Dec 12, 2012 12:00 PM, <wlug-request(a)mail.wlug.org> wrote: > >> Send Wlug mailing list submissions to >> wlug(a)mail.wlug.org >> >> To subscribe or unsubscribe via the World Wide Web, visit >> http://mail.wlug.org/mailman/listinfo/wlug >> or, via email, send a message with subject or body 'help' to >> wlug-request(a)mail.wlug.org >> >> You can reach the person managing the list at >> wlug-owner(a)mail.wlug.org >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of Wlug digest..." >> >> >> Today's Topics: >> >> 1. Need some help with digital signal processing ... (David >Glaser) >> 2. Announce: Meeting December 12th 7PM, WPI Campus Center >> Mid-Century Room 331 (Chuck Anderson) >> 3. Re: Need some help with digital signal processing ... (Jeff >Moyer) >> >> >> >---------------------------------------------------------------------- >> >> Message: 1 >> Date: Wed, 12 Dec 2012 06:33:22 -0500 >> From: David Glaser <dglaser(a)glaserresearch.net> >> Subject: [Wlug] Need some help with digital signal processing ... >> To: Worcester Linux Users Group <wlug(a)mail.wlug.org> >> Message-ID: <50C86B82.5030301(a)glaserresearch.net> >> Content-Type: text/plain; charset="iso-8859-1" >> >> Hi Folks, >> >> I need some help with an Android app for the hearing impaired. >> Essentially, the app is to be used with a wearable android device >> (Google Glasses or theSony android wrist watch) and will listen for >> sounds such as the door bell or the tty, or any other household >> soundthat should be reported to the wearer. >> >> Capturing the sound using an Android device is not the problem. What >I >> don't know is how to compare the incoming sound stream with sound >> signatures that should cause the event to occur. Once the event >occurs, >> then text can be displayed on the googleglasses or the haptic >transducer >> on the wrist watch can be activated. >> >> This app is intended to be open sourceso I'm looking for volunteer >help >> on the algorithms. I will do the programming. >> >> Regards >> >> David Glaser >> dglaser(a)glaserresearch.net >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> >http://mail.wlug.org/pipermail/wlug/attachments/20121212/8dede17f/attachmen… >> >> ------------------------------ >> >> Message: 2 >> Date: Wed, 12 Dec 2012 07:47:11 -0500 >> From: Chuck Anderson <cra(a)WPI.EDU> >> Subject: [Wlug] Announce: Meeting December 12th 7PM, WPI Campus >Center >> Mid-Century Room 331 >> To: wlug(a)wlug.org >> Message-ID: <20121212124710.GZ29170(a)angus.ind.WPI.EDU> >> Content-Type: text/plain; charset="us-ascii" >> >> We are having a WLUG meeting this evening, December 12, at 7:00 PM in >> the WPI Campus Center, Mid-Century Room 331. >> >> http://www.wpi.edu/Admin/CC/Floorplans/37678.htm >> >> This seems like a good time to talk about the WLUG website. We've >had >> half-completed plans since about 2 years ago to replace the hardware >> and software to create a Wiki or Drupal site to replace the outdated >> and manually-maintained-by-me HTML site. This week I plan to finally >> migrate things over to the new server, but the content will still be >> the old HTML site for now. We need some volunteers to help build a >> new site in either MediaWiki or Drupal or some other framework. >> >> After the meeting, we'll continue discussions over at Tech Pizza. >> >> Hope to see you there, >> Chuck >> -------------- next part -------------- >> A non-text attachment was scrubbed... >> Name: not available >> Type: application/pgp-signature >> Size: 190 bytes >> Desc: not available >> Url : >> >http://mail.wlug.org/pipermail/wlug/attachments/20121212/d872da62/attachmen… >> >> ------------------------------ >> >> Message: 3 >> Date: Wed, 12 Dec 2012 09:33:35 -0500 >> From: Jeff Moyer <jmoyer(a)redhat.com> >> Subject: Re: [Wlug] Need some help with digital signal processing ... >> To: David Glaser <dglaser(a)glaserresearch.net>, Worcester Linux Users >> Group <wlug(a)mail.wlug.org> >> Message-ID: <x49zk1jl4qo.fsf(a)segfault.boston.devel.redhat.com> >> Content-Type: text/plain; charset=us-ascii >> >> David Glaser <dglaser(a)glaserresearch.net> writes: >> >> > Hi Folks, >> > >> > I need some help with an Android app for the hearing impaired. >> > Essentially, the app is to be used with a wearable android device >> > (Google Glasses or theSony android wrist watch) and will listen for >> > sounds such as the door bell or the tty, or any other household >> > soundthat should be reported to the wearer. >> > >> > Capturing the sound using an Android device is not the problem. >What I >> > don't know is how to compare the incoming sound stream with sound >> > signatures that should cause the event to occur. Once the event >> > occurs, then text can be displayed on the googleglasses or the >haptic >> > transducer on the wrist watch can be activated. >> > >> > This app is intended to be open sourceso I'm looking for volunteer >> > help on the algorithms. I will do the programming. >> >> We've got some smart folks on this list, no doubt, but it might serve >> you better to ask this question in a more focused forum. Try >> http://www.reddit.com/r/DSP/ for starters. >> >> Good luck! >> Jeff >> >> >> ------------------------------ >> >> _______________________________________________ >> Wlug mailing list >> Wlug(a)mail.wlug.org >> http://mail.wlug.org/mailman/listinfo/wlug >> >> >> End of Wlug Digest, Vol 110, Issue 5 >> ************************************ >> > > >------------------------------------------------------------------------ > >_______________________________________________ >Wlug mailing list >Wlug(a)mail.wlug.org >http://mail.wlug.org/mailman/listinfo/wlug -- Sent from my Android phone with K-9 Mail. Please excuse my brevity.

Dec. 13, 2012

Re: [Wlug] Upcoming meetings - topic proposals

by Tom Martinson

Hello. I am new to this LUG. So I would like to say hello. Peter said that his wife has to connect to his SaMBa server from UMass. When I have had similar situations What I did was to setup a VPN using PPTP. That way you can block All SMB traffic to the outside world. Connect to the PPTP termination point with your client. Setup up the Tunnel and then the SMB information is passed on the inside of the tunnel. Thus keeping the integrity. Also this gives a smaller "signature" for your firewall/server to the real world. Just a though. Peter Gutowski wrote: > Well, so far it's not been a problem, although I keep a close watch on suspicious activity. (You'll notice entries for hosts allow and hosts deny. So far that seems to be pretty effective, although I do notice twits trying to access and being denied): > > hosts allow = 192.168.3.0/255.255.255.224 192.168.2.0/255.255.255.0 > 128.119.216.0/255.255.255.0 216.175.212.192/255.255.255.240 > hosts deny = all # <- no other machines can access > > Perhaps you could suggest conf options that allows [incoming] connections, but don't broadcast availability (i.e. is 'invicible' to all but people that know that that machine is a smb server). As I said, I'm not samba expert! (BTW, my wife accesses the system from her computer at UMass) > > On Monday, May 7, 2001 11:01 AM, Keller, Tim <Tim.Keller(a)stratus.com> wrote: > >> Hey I was looking at the sample smb.conf file (and I've set up a bunch of >> samba servers as well) and I saw something odd (well odd for >> me) >> >> -- start cut -- >> # Configure Samba to use multiple interfaces >> # If you have multiple network interfaces then you must list them >> # here. See the man page for details. >> interfaces = 192.168.3.1 24.91.122.146 >> -- end cut -- >> >> >From a home network point of view, why would you want samba to bind to your >> external (24.xx...) address? Maybe I'm doing something wrong? >> >> I personally add rules to my firewall to block outgoing and incoming SMB >> traffic to the outside world. SMB as a protocol goes (if you could call it >> that) tends to tell the world more then one would want... >> >> Tim. >

May 7, 2001

Re: [Wlug] Topics for next meeting...

by Joel

I second the snap circuits. . My 7 year old has been experimenting with it for over a year. Starting to follow instructions now and build more complex stuff. Thank you, Joel On October 15, 2014 11:18:40 AM Tim Keller <turbofx(a)gmail.com> wrote: Eric, Firstly, congratulations! Eli might be too young for it right now, but a couple years ago I bought Isabelle a "Snap Circuits" kit: http://www.amazon.com/Elenco-Snap-Circuits-SC-300-Physics/dp/B00CIXVIRQ It's been a hit in our house. I'm thinking of buying a copy of "Code Monkey Island": http://codemonkeyplanet.com/ Though I'd like to see the reviews first. Later, Tim. On Wed, Oct 15, 2014 at 8:46 AM, Eric Martin <eric.joshua.martin(a)gmail.com> wrote: > We just had our second and our first is super interested in things so I'm > on board too. Telephony is also good for my job so no arguments here. > > > On Wednesday, October 15, 2014, Joel <joelgroup(a)gmail.com> wrote: > >> I have a 7 year old, so kids & education sounds great. >> >> Telephony would be a great topic as well. >> >> Thank you, >> >> Joel >> >> >> >> >> On October 14, 2014 5:37:27 PM Tim Keller <turbofx(a)gmail.com> wrote: >> >> I figure we're half way through October at this point, we should start >> thinking about what we'd like talk about for a topic next month. >> >> One area that's of interest to me with young kids is educational programs >> that work on linux. >> >> Thanks, >> Tim. >> >> -- >> I am leery of the allegiances of any politician who refers to their >> constituents as "consumers". >> >> >> >> ---------- >> _______________________________________________ >> 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 >> > > > -- > Eric Martin > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > > -- I am leery of the allegiances of any politician who refers to their constituents as "consumers". ---------- _______________________________________________ Wlug mailing list Wlug(a)mail.wlug.org http://mail.wlug.org/mailman/listinfo/wlug

Oct. 15, 2014

Re: [EXT] Framework Laptops

by Tim Keller

We have a meeting coming up on the 26th, this sounds like a great starter topic! Cara, would you be interested in coming to the meeting and doing a demo? Thanks, Tim. On Fri, Jan 13, 2023 at 3:14 PM Jason Couture via WLUG <wlug(a)lists.wlug.org> wrote: > The other cool thing though: > You can 3d print a case for the old board if you upgrade. I plan on making > a dock for them that will fit in 2-3u with a usb-backplane with a 10gbe > switch, and 2x usb-c 10gbe + Power delivery. You'd be able to pack them > super dense. Great for a proxmox or harvester cluster. > > On Fri, Jan 13, 2023, 3:12 PM Jason Couture <plaguethenet(a)gmail.com> > wrote: > >> I've had no issues with mine on fedora. For what it's worth. >> >> Highly recommend framework. Although I did get the runaround with support >> about a usb4 dock. Kept getting me to try windows, despite the fact I had. >> >> But we have 3, they're rock solid. >> >> On Fri, Jan 13, 2023, 12:22 PM John Stoffel via WLUG <wlug(a)lists.wlug.org> >> wrote: >> >>> >>>>> "Cara" == Cara Salter via WLUG <wlug(a)lists.wlug.org> writes: >>> >>> > On Tue, Jan 10, 2023 at 09:52:40PM -0500, Keith Wright via WLUG wrote: >>> >> Is that 42 days from deciding to order one until happily browsing >>> >> the web with newly installed Debian, Xfce, Firefox? Or 42 days >>> >> from starting to fill out the order form until finally getting >>> >> the last required field filled in? Or what? >>> >>> > Hi! I'm the workstudy in question. According to the emails I >>> > received for moving through each step in the process, it took 42 >>> > days from me submitting my deposit and me receiving a physical >>> > laptop that I could start using. >>> >>> Would you be willing to come to a WLUG meeting and show off your new >>> toy to the rest of us? I do like the idea of that laptop, but I'd >>> like to get my hands on it to see how the feel of it really is. >>> >>> > For context, I ordered the "DIY edition" which didn't come with the >>> RAM or >>> > storage. I ordered both on Amazon and they arrived a bit before the >>> laptop. >>> >>> > I'm currently writing this from my Gentoo install on it! The only >>> > two issues I ran into was that the wifi card (Intel AX210) firmware >>> > wasn't in the "stable" kernel, so I had to keyword my system to >>> > ~amd64. The other issue I ran into was that kernel 5.19.12 had a bad >>> > display driver that caused flickering >>> > ( >>> https://community.frame.work/t/psa-dont-upgrade-to-linux-kernel-5-19-12/231… >>> ) >>> >>> Did you fix the flickering with a newer kernel version? Its been >>> years since I ran Gentoo (got tired of all the recompiles, but this >>> was 10+ years ago for sure....) and I thought it was pretty damn >>> bleeding edge in terms of kernels. >>> >>> I'm currently running kernel 6.0.8 on my main Debian Buster home >>> NFS/KVM/etc server and it works great, but it is headless. >>> >>> John >>> _______________________________________________ >>> WLUG mailing list -- wlug(a)lists.wlug.org >>> To unsubscribe send an email to wlug-leave(a)lists.wlug.org >>> Create Account: https://wlug.mailman3.com/accounts/signup/ >>> Change Settings: >>> https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ >>> Web Forum/Archive: >>> https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/3RZJO… >>> >> _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/KZV2E… > -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

Jan. 16, 2023

Re: Reminder: November WLUG Meeting at the Hudson Public Library! Topic: Intel Management Engine.

by Joshua Stone

Hey Forrest, Great to hear from you! It's nice to see a fellow resident! More on the parking situation, the town does list numerous public parking spots in downtown that visitors can use, most within a few minutes of walking: https://www.discoverhudson.org/plan-your-visit/ - *Library:* 3 Washington St, <https://www.google.com/maps/place/3+Washington+St,+Hudson,+MA+01749> Hudson <https://www.google.com/maps/place/3+Washington+St,+Hudson,+MA+01749> - *South Street Parking Lot:* 25 South St, Hudson <https://www.google.com/maps/dir/25+South+St,+Hudson,+MA+01749/Hudson+Public…> - *Avidia Lot after 6PM:* 78 Main St, Hudson <https://www.google.com/maps/dir/78+Main+St,+Hudson,+MA+01749/Hudson+Public+…> - *Cellucci Parking:* 23 Houghton St, Hudson <https://www.google.com/maps/dir/23+Houghton+St,+Hudson,+MA+01749/Hudson+Pub…> - *RailRoad Ave. and Church Street Parking:* Nearby 29 Church St, Hudson <https://www.google.com/maps/dir/29+Church+St,+Hudson,+MA+01749/Hudson+Publi…> - *2 Hour Parking Lot:* 8 South St, Hudson <https://www.google.com/maps/dir/8+South+St,+Hudson,+MA+01749/Hudson+Public+…> There are also plenty of side streets that people will use for off-street parking. Admittedly Hudson's parking situation isn't the most convenient for visitors who aren't used to the area, and this is backed up with a parking study: https://www.townofhudson.org/sites/g/files/vyhlif3281/f/pages/parking_repor… *There are 1,400 parking spaces, but many spaces are hard to find. * > − There is a perception of lack of parking > − Many lots do not have clear or visible signage that indicates whether or > not one can > park there > − There are more than a dozen different types of regulations > − Half of off-street parking is "restricted access", meaning that the lots > are not available > to the general public > − There are some lots that are publicly owned and available to the general > public, yet > most of the stakeholders and workshop participants we spoke with did not > know they > existed > − Some parking areas are difficult to find from the roadway and/or > challenging to > access, so they end up being underutilized > − Overall signage is confusing to customers > The study is fairly old and the parking situation may have improved since then, but I think the point is clear that there's a demand for improved parking. I hope the town will do more to make parking easier to find instead of adding more parking spaces. We definitely have plenty of parking, it's just that visitors may have to plan ahead as it's not designed like a shopping plaza with massive parking lots in front of storefronts. I also hope the town will do more to invest in transit so car traffic and parking demand are reduced. As it stands right now, our regional transit authority has a fairly limited schedule and its coverage isn't great either: https://www.mwrta.com/routes/fixed-routes/route-15 It is for example technically possible to travel from Hudson to Boston via bus and train, but it will take an excruciatingly long time, requires multiple transfers, and may even be at times be unsafe due to poor pedestrian infrastructure along the route: https://www.google.com/maps/dir/Peter's+Grove,+11+Lake+St,+Hudson,+MA+01749/Back+Bay,+145+Dartmouth+St,+Boston,+MA+02116 This is why my wife and I compromise by driving to the train station first when going on day trips into the city. We hope to further reduce our car dependency by having more robust public transit in the central Mass area. There's something to be said by having the freedom to travel to places without needing to take several tons of privately-owned metal with you. - Josh On Fri, Nov 19, 2021 at 8:06 AM Forrest S via WLUG <wlug(a)lists.wlug.org> wrote: > Hey Tim, > > Names Forrest I introduced myself a while back on the forum I live in > Hudson and know the area pretty well so I will be there for my first > in-person meeting and so for everyone who does not know there is a parking > lot in the back behind the fire station it is right next to the library > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > Create Account: https://wlug.mailman3.com/accounts/signup/ > Change Settings: > https://wlug.mailman3.com/postorius/lists/wlug.lists.wlug.org/ > Web Forum/Archive: > https://wlug.mailman3.com/hyperkitty/list/wlug@lists.wlug.org/message/EYMTC… >

Nov. 19, 2021

Re: [Wlug] I guess this is goodbye to WLUG

by E Johnson

I hope not. Even if I rarely attend meetings, I appreciate everyone and everything that happens in WLUG. Recently soimeone I know by correspondence, apparently a nuclear physicist, has had problems with his aging Mac, and contacted me for help since he knows I build my own computers. He' wants to build his own, and install a Linux OS. He is in the US but not local. I recommended some parts for a new build for him, but also recommended that he find a LUG near him and contact them, etc. Is there a directory of LUGs that he can consult? Are the LUGs in contact with each other? If not, that should have been happening right along. I have one issue of my own going on in a prog I have here that I need help with --just a stupid glitch in a text file that should be easy to find, but the text file is HUGE, yet I don't know how to write the correct commands in order to find the probable bad characters in this file and correct them. It would probably be easy for someone, but... I should write this up and send it in case someone can easily solve this. I hope our LUG and the others are not planning to expire anytime soon. Thanks for being there everyone, Liz J On 7 October 2014 22:28, James Gray <jamespgray(a)gmail.com> wrote: > rumors of the death of wlug have been greatly exaggerated, I hope. > On Oct 7, 2014 10:22 PM, "Eric Martin" <eric.joshua.martin(a)gmail.com> > wrote: > >> A month with nothing, really? >> On Oct 7, 2014 9:52 PM, "Joel" <joelgroup(a)gmail.com> wrote: >> >>> Sent messages last month asking about the monthly meeting. No response >>> in >>> a month. No messages in a month. >>> >>> My time with WLUG was fun & informative. I wish you all health & >>> happiness. >>> >>> Thank you, >>> >>> Joel >>> >>> >>> _______________________________________________ >>> 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 >> >> > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > >

Oct. 8, 2014

Re: Offer/Request still open

by Tim Keller

Keith, I can definitely give you a ride. I just don't remember your address. If you're uncomfortable putting it on the list you can email me directly at turbofx(a)gmail.com Frank is going to give a talk about DMARC, SPF and DKIM. How about we plan your talk for January? Thanks, Tim. On Wed, Dec 12, 2018 at 7:01 PM Keith Wright via WLUG <wlug(a)lists.wlug.org> wrote: > Doug Mildram via WLUG <wlug(a)lists.wlug.org> writes: > > > Thanks for the support and keeping the list alive. > > Yes, I have missed a couple of meetings, > due to scheduling conflicts, > but would not like to see them stop. > > Keith Wright via WLUG <wlug(a)lists.wlug.org> writes: > > > I could commit by Thursday to make some slides and > > bring a laptop. I tested slide-showing a few months > > ago with the WPI cable in the Mid-century Room and it > > worked. > > > > Here's the catch: My usual ride is unavailable that > > day. I don't drive and I have not been walking well. > > > > If someone could commit to pick me up at my house > > about 1/2 hour before the meeting I would make sure > > I was ready enough to fake it. I live about a mile > > from WPI. Send me mail. > > > > I will show you some of what I have been doing, > > and how I do it. > > I have a few slides and a vague plan for a short talk. > > Still no ride. If it doesn't happen this time, > I'll do it some other time. > > -- Keith > > PS: > Doug Mildram via WLUG <wlug(a)lists.wlug.org> writes: > > > I find it cool that a machine/mb that old, > > is still way more than I need. > > Some people take pride in having the latest. > > I run an internet host, with name server (by > definition), together with smtpd and httpd, > on a machine with a Tandy monitor, all bought used. > > (Ask your grandfather what's a Tandy?) > _______________________________________________ > WLUG mailing list -- wlug(a)lists.wlug.org > To unsubscribe send an email to wlug-leave(a)lists.wlug.org > -- I am leery of the allegiances of any politician who refers to their constituents as "consumers".

Dec. 13, 2018

Re: [Wlug] Dec Meeting announcement / linux-raid problem

by John Stoffel

>>>>> "Eric" == Eric Martin <eric.joshua.martin(a)gmail.com> writes: Eric> Now, the main reason for my email. My mythbox / home file Eric> server runs linux soft-raid in RAID5 with 3 500GB disks. One Eric> disk went bad a while ago and the array never rebuilt itself. So you only had two 500Gb disks left in the array? Eric> The other day, the second disk went bad. Am I hosed? Possibly, it depends on how bad the second disk is. What I would do is try to use dd_rescue to copy the 2nd bad disk onto a new disk (possibly your original bad disk if you feel brave!) and then try to re-assemble your raid 5 using that. You might or might not have corruption in the filesystem, so make sure you run an fsck on it. Now, in the future, you should run a weekly check of the array for bad blocks or other problems, so that you get notified if a disk dies silently. I use the following crontab entry: # # cron.d/mdadm -- schedules periodic redundancy checks of MD devices # # Copyright © martin f. krafft <madduck(a)madduck.net> # distributed under the terms of the Artistic Licence 2.0 # # By default, run at 00:57 on every Sunday, but do nothing unless the day of # the month is less than or equal to 7. Thus, only run on the first Sunday of # each month. crontab(5) sucks, unfortunately, in this regard; therefore this # hack (see #380425). 57 0 * * 0 root if [ -x /usr/share/mdadm/checkarray ] && [ $(date +\%d) -le 7 ]; then /usr/share/mdadm/checkarray --cron --all --idle --quiet; fi and I get a nice weekly report on both arrays on my main filerserver at thome. Eric> I've been googling for 'rebuild bad linux software raid' but all Eric> I get is the rebuild command. Also, I don't see any tools that Eric> will move bad data to another spot on the disk. This is my Eric> first time using software raid so I'm in a bit over my head. The first thing is to ask for help on the linux-raid mailing list, which is hosted on vger.kernel.org. But somethings you can do to help is to give us more information. Like: cat /proc/mdstat mdadm -E /dev/sd... or /dev/hd... depending on whether your SATA or IDE drives. Basically, use the devices you got from the /proc/mdstat output as your basis. Give us this output, and we should be able to help you more. John

Dec. 20, 2010

Re: WLUG Meeting Feb 11th 2021! Topic: Good question!

by Jon "maddog" Hall

>More obscure. It has to do with how memory accesses to bytes are >handled on the Alpha architecture. They're not very quick, because >the Alpha wants to do all memory access in 32bit chunks. "Quick" is in the eye of the beholder. Yes, the Alpha tended to access data in 32 bit "chunks" to get it into the registers. Being a RISC processor it was not as rich in data access on a byte level. On the other hand other CISC processors also accessed data on a 32-bit level, just that their instruction sets used microcode to make it look like they were only accessing a byte. The trade off was in executing multiple RISC instructions to one microcoded CISC instruction. Would this bother a kernel developer writing a couple of lines of assembly language down at the very lowest level of the kernel....probably. On the other hand for years Linus talked about the Alpha as the best architecture chip he knew, so it could not have been too bad. md On Thu, Feb 4, 2021 at 5:29 PM John Stoffel <john(a)stoffel.org> wrote: > >>>>> "Keith" == Keith Wright <kwright(a)keithdiane.us> writes: > > Keith> John Stoffel via WLUG <wlug(a)lists.wlug.org> writes: > >> I recall, it's mostly the memory ordering around byte accesses that > >> are the problem. > > Keith> Are you saying that the Big Endian vs Little Endian flame war > Keith> actually had consequences in the Real World? > > It did, and still does. MIPS processors can be BE or LE (Big/Little > Endian) depending on how you configure them as I understand, though > this is more the smaller micro-controllers used in embedded stuff. > > I personally play around with ATTiny85 and ATTiny84 MCUs when I get a > chance. Slowly looking at STM8 and STM32 stuff as well. And of > course the Arduino AVR stuff. > > Keith> Or something even more obscure? > > More obscure. It has to do with how memory accesses to bytes are > handled on the Alpha architecture. They're not very quick, because > the Alpha wants to do all memory access in 32bit chunks. > > I honestly don't recall all the full details. You can find info in > the LKML (Linux Kernel Mailing List) which discuss this over the > years. Looks for Posts by Linus Torvalds which also mention Alpha. > Interesting reading. > >

Feb. 4, 2021

WLUG search results for query "meeting"