Skip to content

Tag Archives: linux

VMWare open backup tool

Tuesday, December 22, 2009

I’ve been looking for several backup solutions for VMWare lately, which is quite a depressing task, imho.
Being a proprietary tool, VMWare has a problem in common with Windows: it’s full off proprietary API’s you have to go through to be able to pull a backup. Also, whilst VMWare (ESX, but in practice also ESXi) [...]

Filed in Archive | Also tagged , | Comments (1)

RAID5

Friday, October 2, 2009

serge@mansfield:/tmp$ cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 loop2[1] loop1[0]
10176 blocks level 5, 64k chunk, algorithm 2 [2/2] [UU]
unused devices: none
serge@mansfield:/tmp$

Filed in Archive | Also tagged , | Comments (4)

firewall migration

Friday, July 10, 2009

$ ifconfig | grep ^eth | wc -l
19
$
I’m having fun

Filed in Archive | Also tagged , , , , | Comments (4)

RHCE

Monday, June 29, 2009

As I had some spare days in June, I suddenly decided a couple of weeks ago to do the RHCE exam. So I went on a trip to Mons today, and was pleased to meet Sebastien irl. Thanks again for your support, Seb!
The exam procedure changed recently, and contains now only one single session of [...]

Filed in Archive | Also tagged , , , | Comments (4)

Lang leve full backups

Wednesday, May 27, 2009

Drama: ik ontdek vandaag dat ik van vorige maand een reeks foto’s kwijt ben. Iets met op de verkeerde plaats geïmporteerd en dan daar gewist zonder te weten dat het de originele staan.
Ze hebben ook te kort op mijn toestel gestaan op er een backup van te hebben. Ik werk met een sync systeem die [...]

Filed in Archive | Also tagged , , | Comments Off

SMP vs multi-core vs hyper-threading

Thursday, December 11, 2008

How do I know if I have multiple cpu’s, multi-cores, ore just hyper-threading?
look at /proc/cpuinfo and you will see:
cat /proc/cpuinfo | egrep “physical\ id|core\ id|cpu\ cores”
physical id : 0
core id : 0
cpu cores : 1
physical id : 0
core id : 0
cpu cores : 1

two CPUs in cpuinfo with the same physical id and core id ==> hyperthreading!
when you have [...]

Filed in Archive | Also tagged | Comments (1)

Zoek de fout

Saturday, November 15, 2008

Zoek de fout

Filed in Archive | Also tagged , | Comments (5)

On software vs. hardware RAID

Sunday, June 15, 2008

Christer Edwards wonders how to compare software and hardware RAID.
I was pleasanlty surprised to read the comments being so positive on software RAID, especially on performance.
Let me repeat what I posted:
Over all, I prefer software RAID (on Linux that is) because
- more control
- easy to migrate disks
- no problems with replacing controllers
- no controllers [...]

Filed in Archive | Also tagged | Comments (2)