August 2015 - luv-main

Kernel 3.17 no longer allows bonding ppp devices
by Toby Corkindale 18 Nov '15

18 Nov '15

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

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Networking Presentation @ Main Meeting
by Fraser McGlinn 07 Oct '15

07 Oct '15

Hi Guys, So i've approached the committee to run a networking presentation of some form. However before I begin planning for this, i'd like understand what knowledge is lacking out there in the group. As i'm sure you can imagine, there are a lot of parts to networking. My background so you can see if anything here interests you - I have a good ISP background, in which I have worked on networks both small and large. Through this I have a good knowledge of DSL based services and GPON (This is what NBN runs on). Broadband and PPP Services inc PPPoE and PPPoL2TP I also have a good knowledge of routing protocols such as IS-IS and BGP, and MPLS. Obviously throughout this I have general networking knowledge such as, subnetting, network design, troubleshooting, Quality of Service etc. Now the point of this email is that I want to understand what you want. Below are some ideas that I have for topics, but feel free to comment or add any that you would like. - Networking 101 - Fundamentals including subnetting, OSI Model, packet analysis and troubleshooting - Networking in the home. Internal networking, ADSL networking - Quality of Service - Packet marking, shaping and queuing Let me know your thoughts, Cheers, Fraser

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beginners SIG event idea
by Russell Coker 30 Aug '15

30 Aug '15

I'm thinking of running a beginners SIG event for setting up a mail server. I would give everyone a virtual machine and a NS record of their choice under the unixapropos.com domain. Then you can setup a DNS server and a mail server. This wouldn't be running on the big server and will only have space for maybe 14 virtual machines with 400M of RAM each. The limited number of VMs would mean that people would have to work in groups if it's as popular as the last training event. Who's interested? Also who's available to help in training? I'm good at Postfix and Dovecot but it would be good to have people with experienece with other software. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Faking a file on a filesystem
by Sean Crosby 27 Aug '15

27 Aug '15

I have a need for a way for a regular user (i.e. non root) to "override" a file on a filesystem with one of their own, but just for the lifetime of a script. I'll give you an example. One of my users runs a program which is distributed in a package (i.e. not changeable by them). That program is looking for a file, /path1/file1. My user would like to change this file to a different version of the file in different scripts. I'm not aware of one, but is there a way to redirect file open calls for /path1/file1 to /path2/file2 in a script? It only has to be for file open/read calls, and not write. The /path1 filesystem is not writeable by the user. Is there maybe a FUSE filesystem which will allow this, or something else? Cheers, Sean

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Cannot Free USB Disk Space
by David Zuccaro 26 Aug '15

26 Aug '15

I'd like to report a strange problem. I was backing up my desktop last night to an external usb disk last night. The backup failed to complete because I completely filled up the disk. df -h /dev/sdf1 1.4T 1.4T 0 100% /media/dz/5540d70d-... So this morning I deleted (using sudo rm -rf) an old directory on the usb disk which had about 30 GB of data in it. Now the problem is that df still reports the disk is completely full -- even after rebooting. /dev/sdf1 1.4T 1.4T 0 100% /media/dz/5540d70d-... Can someone please explain to what is going on here? Thanks David Zuccaro BSc (Chemistry, University Of Melbourne), GradDipCompSci (Monash), GradDipEd (Melbourne)

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Re: Cannot Free USB Disk Space
by David Zuccaro 20 Aug '15

20 Aug '15

On 20/08/15 15:22, majoosh chacko wrote: > Strange. Can you see what you get on lsof /media | grep -i delet ? > No output

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my first systemd problem
by Tim Connors 19 Aug '15

19 Aug '15

65959,7> aptitude install swapspace The following NEW packages will be installed: swapspace 0 packages upgraded, 1 newly installed, 0 to remove and 1 not upgraded. Need to get 30.1 kB of archives. After unpacking 116 kB will be used. Get: 1 http://mirrordirector.raspbian.org/raspbian/ stable/main swapspace armhf 1.10-4 [30.1 kB] Fetched 30.1 kB in 2s (12.1 kB/s) Selecting previously unselected package swapspace. (Reading database ... 124324 files and directories currently installed.) Preparing to unpack .../swapspace_1.10-4_armhf.deb ... Unpacking swapspace (1.10-4) ... Processing triggers for man-db (2.7.0.2-5) ... Processing triggers for systemd (215-17+deb8u1) ... Failed to execute operation: Connection timed out dpkg: error processing package systemd (--unpack): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: systemd [ Rootkit Hunter version 1.4.2 ] ... 65961,9> ps axuf | grep D USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 35 0.0 0.0 0 0 ? S< Aug16 0:00 \_ [DWC Notificatio] root 1 0.0 0.8 5636 3664 ? Ds Aug16 0:20 /sbin/init ... Congratulations Poettering. Writing an init that gets stuck in the D state is a feat of magnificent incompetence. Tentacling it so badly into the rest of the system that the system can't proceed out of this state is just fantastic. -- Tim Connors

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Where an Ubuntu-compatible second-hand laptop?
by Carl Turney 19 Aug '15

19 Aug '15

Hi All, Am interested in buying a not-too-old (or even new) laptop. (My Acer Aspire 5315 just can't play hi-res video files on smplayer well, even when doing nothing else.) An MSY store pointed me to a couple of new low-price ones, but they didn't seem Linux-compatible. Looking for fairly old-school specs: Compatible with HDD (not SSD) internal SATA drive DVD (or better, BluRay) drive Decent (full-size good-feel) keyboard 1 bidirectional (or 2 unidirectional) 3.5mm headset sockets Not IBM, Dell, or HP (personal) Built-in camera... meh Highly compatible w/ Ubuntu (using Mint MATE Qiana, not a sysadmin) 64-bit and multi-core CPU, I suppose USB 3.x Anyone selling something like that? Know someone who is? Thanks in advance. Carl Turney Mobile 0427 024 735 Home 9720 3975 Out Ringwood way

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apt config to acquire http but not https proxy?
by Toby Corkindale 19 Aug '15

19 Aug '15

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

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BTRFS and ZFS training
by Russell Coker 18 Aug '15

18 Aug '15

http://etbe.coker.com.au/2015/08/18/btrfs-training/ I've just blogged about the BTRFS and ZFS training on Saturday. For those who didn't attend the complete notes for BTRFS training are included so you can do the exercises at home. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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