February 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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multicolumn xterm output
by Tim Connors 15 Apr '15

15 Apr '15

Anyone heard of a way of splitting your terminal into 2 columns (newspaper style columns) where your eg. 180x49 sized xterm then becomes an emulated eg. 90x98 sized xterm? Preferably supporting the full ansi escape sequences. -- Tim Connors

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steam error
by Russell Coker 03 Mar '15

03 Mar '15

Any suggestions for how to debug the following steam error? It happens on a AMD64 architecture system running Debian/Jessie with NVidia graphics hardware. $ steam Running Steam on debian 8 64-bit STEAM_RUNTIME is enabled automatically Installing breakpad exception handler for appid(steam)/version(1424305157) libGL error: unable to load driver: nouveau_dri.so libGL error: driver pointer missing libGL error: failed to load driver: nouveau libGL error: unable to load driver: swrast_dri.so libGL error: failed to load driver: swrast -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Strange network situation
by Dan062 26 Feb '15

26 Feb '15

Hi all, I have a debian 7 box with 2 network cards eth0 and eth1. eth1 is set to static ip: a.b.c.149 (in /etc/network/interfaces) eth0 is dhcp The box boots it connects to the network and both nics (eth0 and eth1) gets same ip a.b.c.149. and traffic goes through eth0. instead of eth1. (from node ip: a.b.c.1). The arp table on a.b.c.1 sees eth0 with ip ...149. where as its actually eth1 thats set to ip ...149. If eth1 is connected - no traffic goes through. Any ideas?? how do I make sure the right nic always has the right ip everywhere?? Why does eth0 get the same ip as eth1? Daniel. -- dan062 <dan062(a)yahoo.com.au>

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Dell R210 IPMI firmware upgrade
by Brian May 25 Feb '15

25 Feb '15

Hello, After attending Matthew Garrett's talk at LCA, I had this sudden urge to upgrade my IPMI. Just wondering how to do this without the extra steps of buying a windows license and installing windows on the server. Which seems kind of excessive. Looks like it is simple, all I need to do is: 1. Download IMC ( file with latest firmware. 2. Log into website, and upload it. Step 2 is easy. Step 1 is the problem, the only file Dell provide is a Windows executable: http://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverId=9… >From here I can download Dell_Lifecycle_Controller_Integration_v3.0_SP01.exe This is actually a zip file, I can unzip the following files: Dell_Lifecycle_Controller_Integration_v3.0_SP01.exe ReadMe_Dell_Lifecycle_Controller_Integration_v3.0_SP01.txt >From here I seem to be completely stuck. I do not seem to be able to turn the *.exe file into an IMC file. I cannot run the executable on a Windows computer without the iDrac6, it immediately comes up with an error before installing, and I couldn't see any signs of any new files installed. In fact the information from http://en.community.dell.com/techcenter/systems-management/w/wiki/3206.upda… says it is not possible to use the Windows DUP image on the website. Any ideas? Have also tried asking twitter. https://twitter.com/penguin_brian/status/570727507210604544 Thanks -- Brian May <brian(a)microcomaustralia.com.au>

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Re: Strange network situation
by Peter Ross 23 Feb '15

23 Feb '15

From: "Trent W. Buck" <trentbuck(a)gmail.com> > If you want both links up at once to double your throughput, or for > failover (to avoid a SPOF in the NIC), you want what's called "trunking" > or "bonding". It's slightly tedious and flaky; mostly I wouldn't bother. I did this in the past... I just used Google to search for "Linux bonding" to see that not much has changed it seems(?). You find "generic" Linux commands and configuration examples for Red Hat/CentOS and Ubuntu etc. I use it under FreeBSD just now, it's called a "lagg" interface there (link aggregation and link failover interface) but the result is the same. http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/network-aggregati… The only "flakiness" I experienced had to do with confused switches. The Ciscos I have at the moment are okay. The handbook above touches the Cisco part too, as well as "how it works" (also useful for penguins). Regards Peter

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dual-boot Win7/Linux software RAID
by Russell Coker 23 Feb '15

23 Feb '15

I have a system that's dual-booting Windows 7 and Linux (Debian/Jessie not that it matters). I want to use software RAID. Converting a BTRFS root filesystem to RAID-1 is trivial and I'm not too bothered about RAID for the boot loader (happy to rely on backups for that). When running Windows 7 I try to convert disk0 to a "dynamic disk" and the "Virtual Disk Manager" says "The selected GPT formatted disk contains a partition which is not of type 'PARTITION_BASIC_DATA_GUID', and is both preceeded and followed by a partition of type 'PARTITION_BASIC_DATA_GUID'.". Now the disk in question has MBR format (verified from Linux fdisk) and the option to convert to GPT is grayed out (so I couldn't make it GPT if I wanted to). Is this problem related to having Linux partitions on the disk with Windows 7? When offering to convert to a dynamic disk Windows said that it would make all partitions other than the current boot partition unbootable, so obviously this wasn't well designed for boot options. http://tinyurl.com/l49zt23 The above URL has the MS Technet article about dynamic disks. It seems to be a combination of LVM and software RAID which wants to control the disks. Is it possible to have Linux use disks that have the windows "dynamic disks" format or do I need to get separate disks? If I got 3 disks (RAID-1 for Windows and a single disk for Linux) how would I get it to boot? A quick Google suggests that GRUB can't deal with dynamic disks, but if I have GRUB on a separate disk can it chain to a Windows boot loader? It seems that the BIOS (HP SFF desktop PC) doesn't support selecting from multiple hard drives to boot so I guess GRUB would have to be on the first disk. Can Windows 7 support being chain-loaded if it's not on SATA disk 0? -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Ubuntu / Linaro developer image for Raspberry Pi 2
by Toby Corkindale 16 Feb '15

16 Feb '15

I've rolled an Ubuntu 14.10 / Linaro 15.01 "developer" image for the Raspberry Pi 2. Key points here are that it's compiled for ARMv7 and ARMHF, so should be faster than the Raspbian image by some amount. And it'll have more recent versions of software because that version of Ubuntu is significantly newer than Debian Wheezy! I don't have anywhere good to host the image, so it's only available by bittorrent on my limited ADSL upstream, but once a few people are on that it'll speed up the download. http://vps.dryft.net/2015-02-07-raspuntu-tjc.zip.torrent -Toby

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Windows freezing
by Terry Duell 16 Feb '15

16 Feb '15

Hello All, I have recurring problem (not often) which started just recently. Thus far it appears random. The problem is that all my open windows freeze, can't be moved and do not respond to any input. I can open a terminal window (from icon) but cannot get input focus in this window I run gkrellm and that shows that the system is chugging along OK. If I use alt-F2 I can enter 'startx' and then all windows respond as they should. I am running an up to date Fedora 21 x86_64, and using Cinnamon. What might be the likely causes of this behaviour? Cheers, -- Regards, Terry Duell

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Re: Virtualization - network latency
by Petros Listig 08 Feb '15

08 Feb '15

From: "Mike O'Connor" <mike(a)pineview.net> > > On 5/02/2015 11:57 am, Peter Ross wrote: >> Hi, >> >> the SAGE consultant was noticing the network latency on the "internal >> switch". He did not like VirtualBox + FreeBSD for that matter (I don't >> blame him - it was the first "get something up" quickly" configuration). >> > What problem is the SAGE consultant trying to fix ? In general I see > nothing wrong with any of those numbers. The SAGE consultant had a "just works" setup (a temporay one to have something running when needed) to deal with but not a very well performing one. So he tries to point out where he sees problems. And his Windows (7?) setup + Oracle Linux in VMware workstation setup shows 0.15msec ping returns - my setup ca. 0.5 instead. Both platforms used in the test, Oracle VM and FreeBSD+VirtualBox. As more as I test, I see that both of the solutions give me similar results.. Good to know about 0.5 msec as more or less "typical" ping return values seen by others. Thanks. Peter

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