[lug] Installation of multiple Linux Instances

[Zan Lynx]

Paravirtualization like Xen does have pretty nice performance.  Instead
of being forced to trap and emulate various features in the hypervisor,
the virtualized kernel can just call the functions provided by the
hypervisor.

Xen requires a Xen virtualized kernel, doesn't it?  Maybe Xen now
supports the VMI (CONFIG_PARAVIRT in the kernel I think?)  I think some
versions of VMware support VMI also.

But if you require the virtualized kernels to use VMI and the distros
don't have that option built into their kernels, then you aren't gaining
much.  You'd need to provide customized kernels for the installed
virtual machines.

Ben Whaley wrote:
> What about Xen? Near-native performance, EXTREMELY stable in my experience.
> 
> On Fri, Sep 19, 2008 at 1:43 PM, kevin kempter
> <kevin at kevinkempterllc.com <mailto:kevin at kevinkempterllc.com>> wrote:
> 
>     Performance is a issue
> 
> 
> 
> 
>     On Sep 19, 2008, at 1:23 PM, Michael Belanger wrote:
> 
>         Why not just use vmware?
> 
>         kevin kempter wrote:
> 
>             Hi List;
>             I have a new dev server. As an independent consultant I want
>             to maximize it's use. Some of my clients use RedHat/CentOS
>             64 bit, others Redhat/CentOS 32bit, some are even using
>             Fedora and Debian.
>             Here's my thought:
>             I'd like to install each OS/version into it's own space on
>             the disk.  I'm thinking all I have to do is install one OS
>             (say CentOS 64bit) and partition say 20% of the disk. Then
>             once the install is done, boot into the latest fedora disk
>             and do the same, etc.
>             Is this correct ?
>             Later I want to add a disk array and allocate a RAID mount
>             point that can be mounted by any of the installed Linux'es
>             when it's active.
>             Is this do-able ? Easily ?
>             Thanks in advance...