April 2014 - luv-main

Fwd: Fwd: Fwd: Cross-Compiling for Armv7
by Robert Brown 13 Apr '14

13 Apr '14

-------- Original Message -------- Subject: Fwd: Fwd: Cross-Compiling for Armv7 Date: Wed, 09 Apr 2014 22:15:14 +1000 From: Robert Brown <rebrown(a)exemail.com.au> To: luv-beginners(a)luv.asn.au Following some research on the later kernels and the role of u-boot and dtsb I have used the following - but again without a successful boot: make -j5 ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf- menuconfig make -j5 ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf- LOADADDR=0x40008000 uImage dtbs make ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf- -j5 INSTALL_MOD_PATH=output modules make ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf- -j5 INSTALL_MOD_PATH=output modules_install put a copy of the created uImage and arch/arm/boot/sun4i-a10-a1000.dtb into the boot partition of the sdcard copy the created modules to the /lib/modules on the rootfs partition In case the existing boot.scr has some inconsistency I save this to boot.cmd: setenv bootargs console=ttyS0,115200 root=/dev/sda1 rootwait ro earlyprintk debug ext2load mmc 0 0x46000000 uImage ext2load mmc 0 0x49000000 sun4i-a10-a1000.dtb env set fdt_high ffffffff bootm 0x46000000 - 0x49000000 and run: mkimage -C none -A arm -T script -d boot.cmd boot.scr copy this boot.scr to the boot partition of the sdcard When it fails to boot there's not much chance of troubleshooting as I have not been able to get to the uboot prompt. Anyone got any thoughts? Thanks Rob -------- Original Message -------- Subject: Fwd: Cross-Compiling for Armv7 Date: Sat, 22 Mar 2014 11:02:26 +1100 From: Robert Brown <rebrown(a)exemail.com.au> To: luv-beginners(a)luv.asn.au Do I need to use u-boot to start uImage or can I just put a copy of it in the boot partition? Maybe that is where the failure to boot arises. Thanks -------- Original Message -------- Subject: Cross-Compiling for Armv7 Date: Thu, 20 Mar 2014 21:46:03 +1100 From: Robert Brown <rebrown(a)exemail.com.au> To: luv-beginners(a)luv.asn.au Hi Is anyone able to offer helpful tips or new directions with this: I am wanting to use a usb device with ID 0bda:2838 Realtek Semiconductor Corp. RTL2838 DVB-T on a MK802II mini pc using the Allwinner A10 cpu. This device requires modules rtl2830.ko, rtl2832.ko and dvb_usb_rtl28xxu. The second of these modules does not seem to exist without patches on kernel 3.4 but on a raspberry pi I have been successful using kernel 3.10.25+. Here is the relevant lsmod from the pi: r820t 16279 1 rtl2832 8020 1 dvb_usb_rtl28xxu 14333 1 dvb_usb_v2 14860 1 dvb_usb_rtl28xxu rc_core 16313 3 dvb_usb_rtl28xxu,dvb_usb_v2 rtl2830 7378 1 dvb_usb_rtl28xxu dvb_core 92797 3 rtl2830,rtl2832,dvb_usb_v2 However when I try to compile a kernel for the A10 with 3.10.25+ I have no success. If I use the raspi sources for the cross-compile: https://github.com/raspberrypi/linux/archive/rpi-3.10.y.tar.gz I get errors that seem unresolvable: e.g.: undefined reference to `v6wbi_flush_kern_tlb_range' If I use the sunxi kernel source: https://github.com/linux-sunxi/linux-sunxi/tree/reference-3.10 the compile completes without error and I get modules and a uImage file but the device won't boot I am using this as a guide: http://jas-hacks.blogspot.com.au/2012/10/hackberry-a10-compiling-kernel-arm… I have tried using various .config files as a starting point including the pi and from the earlier 3.4 kernel without success Does anyone have any experience in this area? Any help would be much appreciated. Thanks Rob

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parse squid logfiles for cryptolocker URL's
by James Harper 09 Apr '14

09 Apr '14

I'm trying to find a simple way to parse squid logfiles looking for cryptolocker (http://en.wikipedia.org/wiki/CryptoLocker) URL's. The proxy in question denies these anyway because the current version of cryptolocker doesn't authenticate and this proxy requires authentication, so right now it's a useful trigger to notice an infection after the fact but before it has downloaded enough to start infecting user files. The url's in question are <something>.net/com/biz/etc, and some examples of the something are: qoemswifeitgetscytkircyfq diqkbihifambsnvbylvtdcyyd tlfmwcyfikzcuqoqgpzdpz so they are random strings of varying length. The challenge is to find a way to identify them without an excessive amount of CPU time (eg not dictionary lookups). Any suggestions? Thanks James

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btrfs latency
by Tim Connors 08 Apr '14

08 Apr '14

Still running 3.10-3-rpi alas because there isn't a 3.14.15 :) version of the pi kernel yet, but is an increasing latency as the uptime increases, expected? Reboot the kernel, and I go back to having 0.1second latency on my SD card in the pi. But after a few weeks, it will be back to 2 second latencies: http://rather.puzzling.org/munin-cgi/pi/pi/diskstats_latency/mmcblk0.html (it started exhibiting this behaviour after the last reboot in January because that's when I installed a btrfs capable kernel and ran ext3tobtrfs over it. Yes, I've deleted the ext3 image snapshot) -- Tim Connors

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xemacs
by Allan Duncan 07 Apr '14

07 Apr '14

Without starting an editor war [ :-) ], I'd like some help in getting xemacs to play ball. I'd like to give xemacs a try, but I can't get it to recognise the font I want to use (dejavu sans mono) doesn't appear in the "available" list. Liberation mono does, however. Here are their entries in their font.scale files: LiberationMono-Regular.ttf -misc-liberation mono-medium-r-normal--0-0-0-0-m-0-iso8859-1 DejaVuSansMono.ttf -misc-dejavu sans mono-medium-r-normal--0-0-0-0-m-0-iso8859-1 As far as I can see from the docos they both have the right form. Btw, there is a message "Warning: Missing charsets in String to FontSet conversion" Any suggestions? TIA.

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LXC & Docker management software
by Toby Corkindale 04 Apr '14

04 Apr '14

Hi, Does anyone know of some high-level management software for running LXC (preferably Docker) containers across clusters of machines? Eg. So you can have a central control centre to see what's running, what resources it has allocated, and an API to spin up new app instances. Basically private cloud stuff, but lightweight rather than enterprisey.. Closest I've seen so far has been Flynn, but that's still a way off. -Toby

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Debian 7.0 install question
by zlinw＠mcmedia.com.au 04 Apr '14

04 Apr '14

Just did an install of Debian 7.0 from DVD's onto a system using an ASUS X79 Sabertooth motherboard. Now the bios is set to IDE mode (NOT AHCI), this is due to Windows xp as an alternate OS Had some trouble until I disabled secure boot (uefi or what ever they call it). On completion of install system failed to boot, it was clear though that the reason was the installed kernel was using the AHCI drivers. After setting the bios to AHCI mode system booted OK. A couple of questions..... Why during the install did the installer set the intial ramdisk up for AHCI drivers when they were not enabled in the bios. Can Debian 7.0 be installed on a system with ide mode enabled, if so how does one do this. A search on the net was not enlightening. This is not any kind of disaster, I will be compiling my own kernel for this machine (in fact I have already done so) so one can easily get around this issue. Note 1, Sometime back I did a comparison on an ASUS P6X58D Premium MB between IDE and AHCI modes, a good deal of testing showed neither mode was head and shoulders over the other. Lindsay

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Upgrading to LibreOffice 4.2.2 on Ubuntu 10.4
by Carl Turney 01 Apr '14

01 Apr '14

Hi All, I'm trying to upgrade my LibreOffice from 4.0.2.2 to 4.2.2, on my Ubuntu 10.4 Desktop. (Yes, yes, I'll upgrade to Ubuntu 14.4 as soon as I get more powerful hardware and it comes out stable in April.) I followed the instructions here, which seems the most authoritative (it said nothing about upgrading, just installing): > https://wiki.ubuntu.com/LibreOffice#Installing_a_newer_version_of_LibreOffi… (I followed the steps in the above-cited section, as normal Synaptic updates stopped a long time ago on my system.) But when I executed this command... sudo apt-get update ...I got (among others) this message: W: Failed to fetch http://ppa.launchpad.net/libreoffice/libreoffice-4-2/ubuntu/dists/lucid/mai… 404 Not Found So am I correct in assuming that I can't upgrade LibreOffice to 4.2.2 on my Ubuntu Lucid? Thanks very much, Carl Turney Bayswater

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throttle removed from FreeBSD ports - alternatives?
by Peter Ross 01 Apr '14

01 Apr '14

Hi all, I am using "throttle" for snapshot backups. It is a small utility reading from stdin and writing to stdout and used to limit the speed (to avoid "hammering" of disks and networks) E.g. "throttle -1M" reads 1 MByte/sec. Unfortunately this utility was removed from the FreeBSD ports. I do not know the background. It is nowhere maintained anymore, it seems (if I get the change log right, it was part of a "bulk retirement commit" in FreeBSD) I am exploring and considering options.. Do you know any alternatives? Regards Peter

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Re: throttle removed from FreeBSD ports - alternatives?
by Peter Ross 01 Apr '14

01 Apr '14

From: "hannah commodore" <hannah(a)tinfoilhat.net> > On 1 Apr 2014, at 09:30, Peter Ross <Petros.Listig(a)fdrive.com.au> wrote: > >> Hi all, >> >> I am using "throttle" for snapshot backups. It is a small utility >> reading >> from stdin and writing to stdout and used to limit the speed (to avoid >> "hammering" of disks and networks) >> >> E.g. "throttle -1M" reads 1 MByte/sec. > > pipeviewer (pv) has a rate-limit option as well: > http://www.ivarch.com/programs/pv.shtml > > Though it's primary function is to show how fast the pipe is moving data > > The page has FreeBSD support listed in FreshPorts Yes, it's in the ports:-) Thanks, that will do. Peter

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