AeroFS and symlinks

Start an Administrator Command shell CMD.EXE. Use mklink to create a directory symbolic link of your Pictures folder inside the AeroFS folder. This way your Pictures Folder will peer2peer sync between your computers.

Change directory to your AeroFS document folder:
C:\> cd C:\Users\username\Documents\AeroFS
C:\Users\username\Documents\AeroFS> mklink /D Pictures C:\User\username\Pictures\

//Christian

How to template eth0 ip address with Saltstack Jinja

You can test the output of salt network interfaces with
# salt 'some-machine' network.interfaces

Here is the Salt state file, we will write /etc/haproxy/haproxy.cfg with the context of the eth0 ip address
Below is the content of haproxy.sls
#
# Write /etc/haproxy/haproxy.cfg
#
/etc/haproxy/haproxy.cfg:
  file.managed:
    - source: salt://files/etc/haproxy/haproxy.cfg
    - user: root
    - group: root
    - mode: 640
    - template: jinja
    - context:
        ip: {{ salt['network.interfaces']()['eth0']['inet'][0]['address'] }}

file referenced in source: salt:// above content of files/etc/haproxy/haproxy.cfg
the important part is to write the variable in thise case ip as {{ variable }}

listen stats {{ ip }}:10000

Getting the sound to work on Alienware M17xR4 laptop with Ubuntu 12.10

Getting the sound to work on Alienware M17xR4 laptop with Ubuntu 12.10 and kernel 3.6.0-030600-generic.

I've installed kernel 3.6 from the kernel PPA
#  wget -nd http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6-quantal/linux-image-3.6.0-030600-generic_3.6.0-030600.201209302035_amd64.deb
 #  dpkg -i linux-image-3.6.0-030600-generic_3.6.0-030600.201209302035_amd64.deb

Edit the file /etc/modprobe.d/alsa-base.conf and add a snd-hda intel line at the end.
snd-hda-intel index=0 model=dell-m6-amic

Reboot

Enjoy both speakers, headphones and sound input works.

How to convert from Oracle Virtualbox virtual machines to VmwWare Fusion on Mac OS X

How to convert virtual machines from Oracle Virtualbox to VmwWare Fusion on Mac. I have tested succesful virtual machine export from Virtualbox to VmWare fusion with Centos 6 & Windows 7. Here are the instructions In Virtualbox first export your virtual machines as a ova files using the Export tool. The .ova files Virtualbox exports are standard UNIX tar balls. Open a Mac terminal windows. type $ tar xvf virtualmachine.ova you will now get a virtualmachine-disk1.vmdk Go ahead an uninstall Virtualbox and then install VmWare Fusion In VmWare Fusion, Choose New * Use an existing harddisk Point to virtualmachine-disk1.vmdk Pick the choice * Make a separate copy of the harddisk VmWare Fusion will prompt you that the harddisk was created with an earlier version of VmWare/Virtualbox and ask if you would like to convert the harddisk to the new film format? Choose Yes. You should now be at Use an existing virtual disk. Click Continue. Choose the operating system that the viretalbox virtual machine used. Click Finish! That is it.

Lets replicate ZFS with GlusterFS 3.0.8

Lab example cluster of 2x ZFS server nodes ubuntu and ubuntu2 with ZFS distributed via Gluster in RAID1 fashion.
I saw som strange sized files on the glusterfs client when powering down one of the server nodes deliberately.

Installing GlusterFS
# apt-get install libibverbs1
# wget -nd http://download.gluster.com/pub/gluster/glusterfs/3.0/3.0.8/Ubuntu/glusterfs_3.0.8-1_amd64.deb
# dpkg -i glusterfs_3.0.8-1_amd64.deb

Make sure both server/client nodes have the same /etc/host info
root@ubuntu:~# cat /etc/hosts
127.0.0.1 localhost
192.168.1.120 ubuntu
192.168.1.149 ubuntu2


node ubunu
# zpool create tank sdb
node ubunu2
# zpool create tank sdb

node ubuntu
# zfs create tank/neo
node ubuntu2
# zfs create tank/trinity


# glusterfs-volgen -n myvol --raid=1 ubuntu:/tank/neo ubuntu2:/tank/trinity

Copy config files created by volgen
# cp ubuntu-myvol-export.vol /etc/glusterfs/glusterfsd.vol
# scp ubuntu2-myvol-export.vol ubuntu2:/etc/glusterfs/glusterfsd.vol

Start up Gluster

root@ubuntu:~# /etc/init.d/glusterfsd start
* Starting glusterfs server glusterfsd
...done.
root@ubuntu2:~# /etc/init.d/glusterfsd start
* Starting glusterfs server glusterfsd
...done.

# mount -t glusterfs myvol-tcp.vol /mnt/glusterfs/
# echo morpheus > /mnt/glusterfs/test.file

Thanks LLNL & GlusterFS developers

Installing ZFS in Ubuntu 10.04

This a one row install of ZFS in Ubuntu(tested on 10.04)

# apt-get -y install build-essential gawk alien fakeroot linux-headers-$(uname -r) zlib1g-dev uuid-dev libblkid-dev libselinux-dev parted lsscsi && apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 1EE8660B && echo deb http://ppa.launchpad.net/dajhorn/zfs/ubuntu $(uname -r) main > /etc/apt/sources.list.d/zfs.list && apt-get update && apt-get -y install zfs

Ubuntu ZFS backup server with dedup

----- Ubuntu 10.04 Backup Server ZFS install -----
Get ZFS on Linux from Lawrence Livermore National Laboratory thanks! :)

# apt-get install build-essential gawk alien fakeroot linux-headers-$(uname -r) zlib1g-dev uuid-dev libblkid-dev libselinux-dev parted lsscsi

# echo "deb http://ppa.launchpad.net/dajhorn/zfs/ubuntu lucid main" > /etc/apt/sources.list.d/zfs.list

# apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 0D18601A1EE8660B

# apt-get update && apt-get install zfs spl

----- Backup Server ZFS setup -----

# zpool create backup raidz1 sdc sdf sdg sdh spare sdi

# zfs create backup/admin-mac-mini

# zfs set dedup=on backup

------ Backup Server /etc/rsyncd.conf ------

numeric ids = true

read only = false

secrets file = /etc/rsyncd.secrets

uid = root

[admin-mac-mini]

# Owner: Christian Nygaard

path = /backup/admin-mac-mini

log file = /backup/admin-mac-mini/backup.log

auth users = admin-mac-mini

post-xfer exec = /usr/local/bin/zfs-snapshot $RSYNC_MODULE_PATH

---- Backup Server /etc/rsyncd.secrets ----

admin-mac-mini:secretpassword

---- Backup Server /usr/local/bin/zfs-snapshot ----

#!/bin/bash

#

# Usage: /usr/local/bin/zfs-snapshot /backup/zfsfilesystem

#

ZFSVOL=`echo $1 | sed -e 's+^/++g'`

zfs snapshot $ZFSVOL@`date "+%F_%R"`

----- Backup client backup -----

RSYNC_PASSWORD=secretpassword rsync -a --delete /Users/chris admin-mac-mini@backup.example.org::admin-mac-mini

----- Backup client restore -----

rsync admin-mac-mini@backup.example.org::admin-mac-mini /Users/chris/restore

----- Backup Server list backups ----

# zfs list -t snapshot

NAME USED AVAIL REFER MOUNTPOINT

backup/admin-mac-mini@2011-05-26_13:16 0 - 91.4G -

backup/admin-mac-mini@2011-05-26_13:31 43.4K - 91.4G -