luv-main June 2015

luv-main@luv.asn.au

24 participants
29 discussions

Kernel 3.17 no longer allows bonding ppp devices

by Toby Corkindale

Hi, I hit a problem when attempting to upgrade to kernel 3.17.2 on a particular server. Some time between 3.13 and 3.17, the bonding driver has stopped accepting ppp devices, instead throwing an error that the MAC address cannot be changed. (And does not allow this to be forced) I suspect it's unlikely.. but has anyone here encountered this issue and found a solution? Alternatively.. do you know where the right place to file bug report about this would be? It's been a while since I've filed anything against the linux kernel itself. Cheers, Toby

6 years, 6 months

apt config to acquire http but not https proxy?

by Toby Corkindale

Hi, Google is failing me. I know I can use acquire::http::proxy in apt.conf.d to set a proxy server, but this seems to make it used for both HTTPS and HTTP traffic -- however I only want to use it for HTTP traffic. Any suggestions? (Things not to say: * Use iptables to transparently proxy port 80 * Get a better HTTP proxy that support SSL ) Toby

6 years, 9 months

ssh errors from cron jobs

by Russell Coker

Error1: ssh_exchange_identification: Connection closed by remote host Error2: ssh_exchange_identification: Connection closed by remote host rsync: connection unexpectedly closed (0 bytes received so far) [Receiver] rsync error: unexplained error (code 255) at io.c(605) [Receiver=3.0.9] I'm getting lots of errors like the above from cron jobs in situtions where running the same script from an interactive session works. The first error is from a cron job that rsync's files to a server and the second error is from rsyncing files from the server via ssh. On one of my systems I've seen a pair of cron jobs fail with that error every half hour for the past 4 hours but when I run both jobs from an interactive session they work every time. What can be different about the operation of ssh in this regard? It's a passwordless login with RSA key so there's no reason for it to need user input and in any case the error message doesn't indicate that as being a problem. I've compared the cron environment with the environment from the interactive session and apart from /bin/sh (DASH on Debian) vs /bin/bash I can't see anything of note. Any ideas? -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

6 years, 10 months

problems in a net upgrade to Debian 8.1

by zlinw＠mcmedia.com.au

One of my systems has had Debian 7.x (AMD64) installed from 3 DVD's and subsequently it has been upgraded over the internet to testing a number of times. The last of these upgrades was sometime back (6 months or so). This was upgraded to 8.1 yesterday. Unfortunately its left the package system in a poor state. Note, previous experience doing this shows Debian's package system does not like this combination (install from cd/dvd and update via the internet) to go beyond the next version number. Aptitude wants to remove a large number of packages like blender, gimp, exiv2, the list going on and on. dselect how ever is much more on the ball, it only wanting to remove imagemagik and graphicsmagik. Apt does not appear to know what its doing, for instance it wishs to remove blender for 2 unmet dependencies. Curiously dselect, dpkg AND looking in the /var/lib/dpkg/info directory shows these dependcies ARE on the system. It's distinctly possible apt is not getting on well with a system thats been instaled from DVD's. I have suffered from similar package system corruption from this cause in the past. The problem being as almost (iff not all) debian developers use a net install and upgrade the CD/DVD install does not get tested very well. Its generally possible to resolve a situation like this with dpkg, it does require though much mucking around. Note: Both the apt package lists and the dpkg package lists have been updated, experience that these being out of sync can cause weird problems. Anyone have any ideas, it looks as though I may have to install 8.1 from scratch, something I am NOT really looking forward to due to what packages I like to select, package selection taking forever. Lindsay

6 years, 10 months

Re: problems in a net upgrade to Debian 8.1

by zlinw＠mcmedia.com.au

On Sat, 20 Jun 2015 10:45:16 Chris Samuel said, > On Sat, 20 Jun 2015 10:25:15 AM zlinw(a)mcmedia.com.au wrote: >> I am NOT dreamming this up, I did an apt-get update followed by an apt >> dist-upgrade to check this out,and the val/lib/dpkg/availibilty file was >> not touched >My wild guess is that you're looking at the atime of the file, and if your >kernel has relatime set (which has been the default for a while) then that >won't get updated if the file hasn't been modified since the last time >anything accessed it (unless it's a day or more since the last access, when >it will get updated). I am going to stick to my guns here, in this case when dselect update was done the availibilty files creation time was set to 0810, the time the file was writen to. Apt-get update, and apt dist-upgrade was done at 1010 the availibilty files creation time stayed at 0810, also its size did _Not_ change. This would seem to indicate the file was not writen to. I checked this again just now, apt-get update does not write to this file, where as dselect update does. Doing an strace on apt-get update shows it writes to files in the /var/lib/apt/lists directory and to the /var/lib/dpkg/status file but it does __not__ write to the availibilty file. So on my systems apt and dselect do have a different idea of what is availible. Lindsay

6 years, 10 months

Call for Papers for linux.conf.au 2016 in Geelong now open!

by Donna Benjamin

linux.conf.au 2016 Geelong, Australia - LCA By the Bay are delighted to announce #CfP is now open We're delighted to announce that the Call for Presentations for the conference, to be held 1st-5th February at Deakin University's Waterfront Campus, are now open. CfP will remain open until 6th July. linux.conf.au/cfp ----------------- Given the recent advances in wearable technology, embedded platforms, and fruitful marriages between open design and technology, open source software and hardware is delivering a number of tangible and intangible benefits for our daily lives. Life is better with Linux. -------------------------- And that’s exactly what our conference theme is. linux.conf.au 2016 will focus on how Linux and open source technologies are improving lives - through humanitarian projects, wearables that give us greater control and choice over our health and habits, and which enrich our lives through protecting our privacy and our ‘digital health’. ** What types of presentations are being sought?** -------------------------------------------------- * Presentations - the standard, time-tested format for most of linux.conf.au. A sage on the stage presents interesting and hopefully informative and engaging content, with time for questions. Around 45 mins total. * Tutorials - double slots with a defined syllabus, where delegates walk out with a key skill or ability. Some prep work is usually required. * Prototypes - we’d like to do something different this year and introduce 45 minute sessions called ‘Prototypes’ - where Makers, Hackers, and Voiders are able to show and tell what they’ve made. It could be a hardware prototype, a software prototype, or a ‘wetware’ prototype - where technology is interacting with the biomedical field for things like implantable NFC chips. ** What presentation topics are welcomed? ** -------------------------------------------- We’re still expecting to have our time-honoured classic talks - the state of the Linux Kernel, advancements in architecture, storage, file systems and utilities. But we’d also like to see lots of talks from people who use Linux and F/LOSS to make our lives better. To make better people. And a better humanity. How do we develop for wearables and implantables? How do you do unit tests for an implantable wetware device? What happens when we see the first IoT murder? And who owns our data from wearable devices - us, or our insurance companies? Linux is now embedded in a raft of wearable, tiny devices - which present challenges and opportunities to be met and maximised. These are the stories we would like to hear. ** What about Miniconfs? ** --------------------------- Miniconference proposals are also now welcome. Miniconf #CfP will close on 6th July. See https://linux.conf.au/programme/miniconfs for more details ** How do I submit to the #CfP? ** ---------------------------------- 1. Go to http://linux.conf.au 2. Create an account 3. Confirm your email address 4. On the conference website, log in and choose 'Submit a Proposal' from the left hand menu 5. Fill out the required information - remember, the more info you provide, the better informed Papers Committee will be. ** How do I stay in touch? ** ----------------------------- Potential Delegates and Speakers are encouraged to remain up to date with conference news through the following channels; Website: https://linux.conf.au Twitter: @linuxconfau, hashtag #lca2016 Facebook: https://www.facebook.com/lcabythebay Google+: https://www.google.com/+LcabythebayOrgAu Lanyrd: http://lanyrd.com/2016/linuxconfau/ IRC: #linux.conf.au on freenode.net Email: info(a)lcabythebay.org.au Announce mailing list: http://lists.linux.org.au/mailman/listinfo/lca-announce We warmly encourage you to forward this announcement to technical communities you may be involved in.

6 years, 10 months

Antispam - 2015 edition

by Jason White

Greetings to all on the list. I'm using CRM114 to filter all of the mail that passes the restrictions defined in my Postfix configuration. Some spam still finds its way through. These days, I'm relying extensively on Dovecot IMAP to enable retrieval of mail by multiple devices (two laptops, a phone, and a tablet that could receive mail but hasn't been configured to do so yet). What's the best way to set up automatic retraining of messages on the server Several options come to mind, including incron, a systemd timer unit, a cron job. The desired effect is: Everything that is moved into the spam folder from elsewhere is classified as spam. Everything moved out of the spam folder is retrained as good. Suggestions?

6 years, 10 months

Re: [luv-beginners] linux noob - install problems, installfests?

by Wen Lin

Hi Justin, Are you able to bring just your desktop to our Linux Beginners Workshop this coming Sat 20 June? The address is: VPAC 110 Victoria St, Carlton South VIC 3053. Quite a number of us will be there, and can have a closer look at your SSD and troubleshooting. Would like to help. Wen On Jun 14, 2015 11:10 PM, "Justin Fisher" <justinlewisfisher(a)gmail.com> wrote: > Hi Wen, > > I'm still no further along with this install. I have tried again today > with the KXstudio live disc, and for whatever reason the ssd is now no > longer being recognized from the live disc and from Win7. The instructions > listed in the links you sent I had pretty much already followed as I had > used this guide > http://www.linuxbsdos.com/2012/07/23/dual-boot-ubuntu-12-04-and-windows-7-o… > . I checked my bios and made sure i selected ahci where it was applicable > but this did not fix anything. I have to say i am out of ideas (and > motivation) here and will need some help if you are able to spare some > time. Many thanks. > > Justin > > On Tue, Jun 9, 2015 at 10:49 AM, Trent W. Buck <trentbuck(a)gmail.com> > wrote: > >> Wen Lin wrote: >> > One key point: *BIOS and UEFI: set it to AHCI* >> >> Unless you're dual-booting, *always* set your SATA controllers to AHCI. >> The options "legacy", "hybrid" and "PATA" are worse choices for Linux. >> >> Erratum: current hardware seems to add NVMe, which appears to be better? >> https://en.wikipedia.org/wiki/NVMe_vs_AHCI >> >> > using the parameter 'noatime'. >> >> The default should be relatime (check /proc/mounts), >> which should be near enough. >> >> Changing it to noatime will break a handful of programs, >> but you probably don't use them anyway. >> > >

6 years, 11 months

Re: problems in a net upgrade to Debian 8.1

by zlinw＠mcmedia.com.au

On Sat, 20 Jun 2015 10:02:05 Craig Sanders said, On Sat, Jun 20, 2015 at 09:34:43AM +1000, zlinw(a)mcmedia.com.au wrote: >> Further to my previous post, >> >> As far as I can find out dselect and dpkg use /var/lib/dpkg/available >> for there package list but apt uses the various files in......... >> >> /var/lib/apt/lists >wrong. I am NOT dreamming this up, I did an apt-get update followed by an apt dist-upgrade to check this out,and the val/lib/dpkg/availibilty file was not touched, where apt is getting its info from on my system I do not know but its ____not____ from the /var/lib/dpkg/available file. Its possible a full dvd install sets up some different system, I do not know. Lindsay

6 years, 11 months

Re: problems in a net upgrade to Debian 8.1

by zlinw＠mcmedia.com.au

Further to my previous post, As far as I can find out dselect and dpkg use /var/lib/dpkg/available for there package list but apt uses the various files in......... /var/lib/apt/lists on my system these are.... dl.google.com_linux_earth_deb_dists_stable_Release dl.google.com_linux_earth_deb_dists_stable_Release.gpg dl.google.com_linux_earth_deb_dists_stable_main_binary-i386_Packages ftp.debian.org_debian_dists_testing_InRelease ftp.debian.org_debian_dists_testing_contrib_binary-i386_Packages ftp.debian.org_debian_dists_testing_contrib_binary-i386_Packages.IndexDiff ftp.debian.org_debian_dists_testing_contrib_i18n_Translation-en ftp.debian.org_debian_dists_testing_contrib_i18n_Translation-en.IndexDiff ftp.debian.org_debian_dists_testing_main_binary-i386_Packages ftp.debian.org_debian_dists_testing_main_binary-i386_Packages.IndexDiff ftp.debian.org_debian_dists_testing_main_i18n_Translation-en ftp.debian.org_debian_dists_testing_main_i18n_Translation-en.IndexDiff ftp.debian.org_debian_dists_testing_non-free_binary-i386_Packages ftp.debian.org_debian_dists_testing_non-free_binary-i386_Packages.IndexDiff ftp.debian.org_debian_dists_testing_non-free_i18n_Translation-en ftp.debian.org_debian_dists_testing_non-free_i18n_Translation-en.IndexDiff I assume all use /var/lib/dpkg/status, because different lists are used the system can get out of step. Further more it seems as apt is more likely omit packages from its lists. I have never had dpkg and apt report the same number of packages, you can get close, currently the list of installed packages for both differs by 2 2815 for apt 2817 for dpkg. Interestingly "apt-move sync" which is supposed to produce a local mirror of all installed packages on your system only produced 2400 odd packages for the above system. I have no idea what debians package system thinks its doing. Note: this is what I call "getting out of step", on an initial install all the above numbers _nearly_ match. Why anyone in debian though it was a great idea to have two separate non-synced package lists is beyond "this little black duck". Lindsay

6 years, 11 months

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luv-main June 2015