Casper's Life » linux

RHEL6 – disable IPv6 on an interface

casper — Tue, 22 Nov 2011 20:57:26 +0000

I’ve been having fun upgrading, or should one say migrating to RHEL6 (Scientific Linux 6.1). As run KVM (Virtualization) I have a bridge running for my VM to connect to the network.

Now I suddenly noticed that IPv6 was enable on my ‘eth0′ which is part of the bridge, this should not happen as [...]

Linux – CentOS5 and software raids…..

casper — Sat, 28 May 2011 21:10:26 +0000

We all like RAID, and with Linux it’s a pretty cheap way to get enough space to store ones DVD/Music collection, I run a fairly large RAID5 which is working without a hiccup, but much to my surprise I was checking my /proc/mdstat and saw:

md5 : active raid5 sdh1[4] sdg1[3] sdf1[2] sde1[1] sdd1[0]
[...]

AirTunes – forked-daapd and Airport Express

casper — Thu, 14 Apr 2011 10:45:26 +0000

One small issue one can run into after installing forked-daapd is that using the iPhone/iPad remote one cannot play any songs.

Looking in /var/opt/forked-daapd.log one will see something:

[2011-04-14 11:24:59] laudio: Could not open playback device: No such file or directory
[2011-04-14 11:24:59] player: Could not open local audio
[2011-04-14 11:24:59] dacp: [...]

Linux – Software RAID speed

casper — Sat, 02 Apr 2011 11:54:23 +0000

Having reshaped a RAID5 twice of as many weeks, I’ve found that adding a 2TB drive takes a good 36 hours, which is kind of frustrating.

After a bit of searching, I discovered that there is a setting in /sys/block/md*/md/stripe_cache_size which by default is set to 256. This is enough for normal day operations, but [...]

QNAP TS-410 SoHo NAS devices

casper — Sun, 07 Nov 2010 20:12:46 +0000

I recently had the “pleasure” to try a NAS device, more specific a QNAP TS-410, which is handy little box which takes 4 harddrives (each upto 2TB), 2 Gigabit network ports, a few USB ports, and a 2 eSATA ports.

Very neat, but it’s let down but the lack of a decent CPU (Marvell [...]

XEN with loopback devices

casper — Mon, 26 Jan 2009 15:57:49 +0000

One of the most annoying things with XEN and loopback devices is that at some point you will run out of them. Especially if you like me have a setup with more than 15 virtual servers (not all of them are running at the same time).

I just ran into “Error: Device 5632 (vdb) coulnt [...]

Missing …..

casper — Sat, 10 Jan 2009 20:40:51 +0000

Most if not all of the photos in the posts are gone.. No I did not loose them, well kind of – on purpose…

After 5 years I felt that I needed some new hardware for my server, and one of the things I decided was to move all my photos to smugmug, where [...]

Linux & Asus P5QL Pro

casper — Sat, 03 Jan 2009 02:20:07 +0000

One of the more annoying things about new motherboards and Linux is that they sometimes does not work – that is they actually work, but then something does not work.

The most annoying thing for me is always the network card…..

In this case with the Asus P5QL Pro, the network card was not [...]

Why I quit: kernel developer Con Kolivas

casper — Tue, 24 Jul 2007 16:16:59 +0000

As a follow up on my comments in â€œFive crucial things the Linux community doesnâ€™t understand about the average computer userâ€, I saw a reference to this interview with Con Kolivas on /., who until recently was the maintainer of the -ck tree (linux kernel patch tree).

Even though people are already [...]

“Five crucial things the Linux community doesnâ€™t understand about the average computer user”

casper — Wed, 23 May 2007 20:04:52 +0000

I wrote â€œThe end of the Mac roadâ€???, as a response to Ian Betteridge, now it seams that things have happened in “choose your OS” world….

Adrian Kingsley-Hughes from ZDnet have written a comment to “why does people still use Windows” discussion.

First installment: Five crucial things the Linux community doesnâ€™t [...]