About upgrade KVM

About upgrade KVM

[satimis]

Hi folks,

KVM -virtualizer
host - Debian 5.0

This virtual machine has been running for sometimes.  IIRC the KVM was  
download from KVM website.  Its version is quite old.


$ sudo kvm | head -1
QEMU PC emulator version 0.9.1 (kvm-72), Copyright (c) 2003-2008  
Fabrice Bellard


$ apt-cache policy qemu-kvm
qemu-kvm:
   Installed: (none)
   Candidate: 0.12.4+dfsg-1~bpo50+1
   Version table:
      0.12.4+dfsg-1~bpo50+1 0
           1 http://www.backports.org lenny-backports/main Packages


I tried to upgrade it on System -> Administration -> Synaptic Package Manager;
- qemu-kvm
- qemu-kvm-dbg


On marking them to install following warning popup:-
Mark additional required changes?

To be removed
kvm

To be added
libasyncns0
libcap1
libpulse0
- end -


My questions are;

1)
On deleting the old package whether it would affect the running  
virtual machine?

2)
Is there any way to come back in case of problem?


Please advise.  TIA


B.R.
Stephen L

Re: About upgrade KVM

[Thomas Mueller]

> 
> 
> On marking them to install following warning popup:- Mark additional
> required changes?
> 
> To be removed
> kvm
> 
> To be added
> libasyncns0
> libcap1
> libpulse0
> - end -
> 
> 
> My questions are;
> 
> 1)
> On deleting the old package whether it would affect the running virtual
> machine?

IMHO they won't be affected until "shutdown" of the guest and/or the host.


> 
> 2)
> Is there any way to come back in case of problem?

backup the old kvm package (look in /var/cache/apt/archive) before 
upgrade. 

beaware that some command line switches changed between 0.9.1 and 0.12.4. 
and upgrade your host kernel too (2.6.32 is in backports) for a newer 
version of the kvm kernel module (don't know if kvm-72 works with 0.12.4)



- Thomas