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Category: Virtualization

Moving virtual machines from KVM to ESXi 6.0

I’ve been running KVM for quite a while on my lab server. It’s been running without issue but with the release of vSphere/ESXi 6.0 I felt it was time to move back to VMware. I wanted to preserve the virtual machines already running so I set out to move these to ESXi. I ran into some issues which I’m not sure is a generic problem or specific to ESXi 6.0 but I’ll describe what I…

IPv6 with, ChicagoVPS and Ubuntu

I have recently moved my hosting to a couple of VPSes at ChicagoVPS and wanted to use IPv6 (via ChicagoVPS uses OpenVZ which presents a couple of problems $ ifconfig sit0 sit0: error fetching interface information: Device not found $ sudo modprobe ipv6 FATAL: Module ipv6 not found. It turns out, this is a fairly common problem though OpenVZ is supposed to support IPv6. Luckily, someone made a small userland program (tb-tun, which “tunnels”…

iptables on a ChicagoVPS (OpenVZ) VPS

iptables is not always easy to deal with so I prefer to use Uncomplicated firewall (ufw) in Ubuntu, because it simplifies configuring and maintaining my firewall rules. Unfortunately, ufw does not play nice with OpenVZ containers so I decided to find something else. In the end (after testing various things) I decided to install the package iptables-persistent which is not as sexy as ufw but gets the job done. iptables-persistent uses two configuration files /etc/iptables-persistent/rules.v4…

Access your Linux disks (ext4, xfs, ReiserFS, btrfs etc) from Windows

It’s been a while since I last had to run Windows on my laptop; back then I used Ext2 Installable File System For Windows to access data on my Linux-formated partitions.

In the meantime a few things have changed: Windows 7 and Ubuntu formating ext3 with a inode size of 256 – none of these are supported by ext3 ifs.

Ext2read supports Windows 7 (as well as ext4 and LVM2) but it’s more like a file browser and does not support assigning drive letters to Linux filesystems and since my /home is formatted with XFS it does not help me anyway.

Instead of going through reformatting the filesystems I wanted to access from Windows, I decided to build a virtual file server instead; that way I can access any filesystem type supported by Linux.

Software used: Windows 7, Virtualbox and Ubuntu (server edition)

This guide will work with other versions of Windows (and other OS’es as well), there are no ties to Virtualbox and the Linux version used can be anyone you like.

Ubuntu 10.10 on Virtualbox

Just a quick heads-up. Virtualbox does not yet officially support Xorg 1.9 (which is shipped with Ubuntu 10.10). According to this ticket the problem will be fixed in 3.2.10. In the meantime, try you your luck which with this unsupported Additions build; it didn’t work for me though.

Running Windows applications natively and seamlessly on Linux with SeamlessRDP and Virtualbox or KVM

This guide will go through how to install Virtualbox or kvm and running applications inside a virtual Windows XP machine and display them seamlessly on your X-based desktop.

Running Windows applications on Linux with KVM and SeamlessRDP

Please go to the updated article. Since I wrote the post about running Windows applications on Linux with Sun xVM VirtualBox and SeamlessRDP I have been using the system almost daily to run some applications needed at work. It has been running well except for crashes in VirtualBox from time to time. Two new releases of VirtualBox has not fixed the problem. Growing increasingly tired of this I decided to look at KVM (Kernel-based Virtual…

Sun releases xVM VirtualBox 2.1.4

Yesterday Sun released the second maintenance release for VirtualBox 2.1 See the Changelog for more details. Actually my Windows VM has been running smoothly since I upgraded to 2.1.2 but as usual there is a bunch of bugfixes in this release. Download it here.

Tip: Determining UUID of a LUN on VMware ESX

The fastest way of determining the UUID of a LUN on ESX is through /proc: # grep "Id:" /proc/vmware/scsi/vmhba1/8:5 Id: 60 5 7 68 1 90 81 1a d8 0 0 0 0 0 0 34 32 31 34 35 20 20 This corresponds to a UUID of 600507680190811ad800000000000034 On ESX 3.5 go to /vmfs/devices/disks to see the mapping to a vmhba.

Sun releases xVM Virtualbox 2.1.2

Sun has released xVM Virtualbox 2.1.2. The changelog shows a lot of improvements. I am especially delighted to see this entry NAT: fixed occasional crashes (bug #2709) this one bug has really been … bugging me since it made the virtual machine almost unusable. Also, this release adds official support for Windows 7. At least one defect remains. When running more than one Windows VM VirtualBox will die with the error message An active VM…

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