Creating and installing Centos under virt-manager

[John Lagrue]

All working a treat: created the guest (fully virtualised - I have no
time for Xen), setup disk space in a 6Gb file, gave it a name, and
pointed the installation source to be the first of 6 .iso files for
Centos 5 installation

......then it asks for the second CDRom!

How the blazes is one supposed to tell it where to get the file?

I'm completely stuck! I thought this was supposed to work with .iso
files and I wouldn't have to burn 6 CDs. But what happens now?

JDL

[John Summerfield]

John Lagrue wrote:
>  All working a treat: created the guest (fully virtualised - I have
> no
>  time for Xen), setup disk space in a 6Gb file, gave it a name, and
>  pointed the installation source to be the first of 6 .iso files for
>  Centos 5 installation
>  
>  ......then it asks for the second CDRom!
>  
>  How the blazes is one supposed to tell it where to get the file?
>  
>  I'm completely stuck! I thought this was supposed to work with .iso
>  files and I wouldn't have to burn 6 CDs. But what happens now?
>  
Last I read, the ability to change CD was "planned for the future."

You're better off using the DVD image. If you can find a .jigdo file and 
template (I think CentOS does it), then you don't have to download much 
of CentOS 5 again.

Or do a network install: nfs should work really well over a virtual LAN.



-- 

Cheers
John

-- spambait
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Please do not reply off-list

[Mark Nielsen]

or create a DVD .iso file from the 6 CDs. I have instructions on my 
website, www.certifried.com

John Summerfield wrote:
>  John Lagrue wrote:
> > All working a treat: created the guest (fully virtualised - I have no
> > time for Xen), setup disk space in a 6Gb file, gave it a name, and
> > pointed the installation source to be the first of 6 .iso files for
> > Centos 5 installation
> >
> > ......then it asks for the second CDRom!
> >
> > How the blazes is one supposed to tell it where to get the file?
> >
> > I'm completely stuck! I thought this was supposed to work with .iso
> > files and I wouldn't have to burn 6 CDs. But what happens now?
> >
>  Last I read, the ability to change CD was "planned for the future."
>
>  You're better off using the DVD image. If you can find a .jigdo file 
>  and template (I think CentOS does it), then you don't have to download 
>  much of CentOS 5 again.
>
>  Or do a network install: nfs should work really well over a virtual LAN.
>
>
>

[Andrew Cathrow]

A network install is the best option but you can always add and remove
devices using virsh

Have a look in the man page for virsh at attach-disk and detach-disk 



On Fri, 2007-09-21 at 22:36 -0400, Mark Nielsen wrote:

>  or create a DVD .iso file from the 6 CDs. I have instructions on my 
>  website, www.certifried.com
>  
>  John Summerfield wrote:
>  > John Lagrue wrote:
>  >> All working a treat: created the guest (fully virtualised - I have no
>  >> time for Xen), setup disk space in a 6Gb file, gave it a name, and
>  >> pointed the installation source to be the first of 6 .iso files for
>  >> Centos 5 installation
>  >>
>  >> ......then it asks for the second CDRom!
>  >>
>  >> How the blazes is one supposed to tell it where to get the file?
>  >>
>  >> I'm completely stuck! I thought this was supposed to work with .iso
>  >> files and I wouldn't have to burn 6 CDs. But what happens now?
>  >>
>  > Last I read, the ability to change CD was "planned for the future."
>  >
>  > You're better off using the DVD image. If you can find a .jigdo file 
>  > and template (I think CentOS does it), then you don't have to download 
>  > much of CentOS 5 again.
>  >
>  > Or do a network install: nfs should work really well over a virtual LAN.
>  >
>  >
>  >
>  
>  --
>  Fedora-xen mailing list
>  Fedora-xen(a)redhat.com
>  https://www.redhat.com/mailman/listinfo/fedora-xen 


Andrew Cathrow
Red Hat, Inc.

[phone] - Mobile
[phone] - Home Office

acathrow(a)redhat.com

[Hugh O. Brock]

Andrew Cathrow wrote:
>  A network install is the best option but you can always add and
> remove 
>  devices using virsh
>  
>  Have a look in the man page for virsh at attach-disk and detach-disk
>  
>  
>  
>  On Fri, 2007-09-21 at 22:36 -0400, Mark Nielsen wrote:
> > or create a DVD .iso file from the 6 CDs. I have instructions on my 
> > website, www.certifried.com <http://www.certifried.com>
> >
> > John Summerfield wrote:
> > > John Lagrue wrote:
> > >> All working a treat: created the guest (fully virtualised - I have no
> > >> time for Xen), setup disk space in a 6Gb file, gave it a name, and
> > >> pointed the installation source to be the first of 6 .iso files for
> > >> Centos 5 installation
> > >>
> > >> ......then it asks for the second CDRom!
> > >>
> > >> How the blazes is one supposed to tell it where to get the file?
> > >>
> > >> I'm completely stuck! I thought this was supposed to work with .iso
> > >> files and I wouldn't have to burn 6 CDs. But what happens now?
> > >>
> > > Last I read, the ability to change CD was "planned for the future."
> > >
> > > You're better off using the DVD image. If you can find a .jigdo file 
> > > and template (I think CentOS does it), then you don't have to download 
> > > much of CentOS 5 again.
> > >
> > > Or do a network install: nfs should work really well over a virtual LAN. 
If you don't mind the bleeding edge, the latest release of libvirt 
supports connecting and disconnecting cdrom backing devices (or isos) 
from a fullvirt xen guest. The xen guest must have a cdrom device with 
no "source" line in its xml definition (unfortunately we don't support 
this with KVM yet although we plan to soon). If you call "virsh 
attach-device <domain> <device.xml>" where "device.xml" is an
xml file 
with a complete device definition like so:

     <disk type='block' device='cdrom'>
       <source dev='/dev/cdrom'/>
       <target dev='hdc'/>
       <readonly/>
     </disk>

then libvirt will attach your host cdrom device to the guest's cdrom 
device. Then to disconnect the cdrom, call "virsh attach-device <domain> 
<device.xml>" where "device.xml" is an xml file like the above, but
with 
no "source" element.

The upcoming release of virt-manager (should be out today if it isn't 
already) has UI that supports this capability. Again, to be clear, this 
only works for fully virtualized Xen guests at the moment; we're working 
on adding it to kvm but have no idea when that will be available.

Hope this helps somewhat.

Take care,
--Hugh

-- 
Red Hat Virtualization Group http://redhat.com/virtualization
Hugh Brock           | virt-manager http://virt-manager.org
hbrock(a)redhat.com    | virtualization library http://libvirt.org

[Daniel P. Berrange]

On Sat, Sep 22, 2007 at 08:09:22AM +0800, John Summerfield wrote:
>  John Lagrue wrote:
>  >All working a treat: created the guest (fully virtualised - I have no
>  >time for Xen), setup disk space in a 6Gb file, gave it a name, and
>  >pointed the installation source to be the first of 6 .iso files for
>  >Centos 5 installation
>  >
>  >......then it asks for the second CDRom!
>  >
>  >How the blazes is one supposed to tell it where to get the file?
>  >
>  >I'm completely stuck! I thought this was supposed to work with .iso
>  >files and I wouldn't have to burn 6 CDs. But what happens now?
>  >
>  Last I read, the ability to change CD was "planned for the future." 
Latest upstream libvirt & virt-manager now has support for this on Xen.
The support for KVM will be coming soon too. I hope to get it into 
Fedora 8, and then subsquently it'll be in a Fedora 7 update. In the
meantime our recommendation is to use the 'images/boot.iso' from the
install tree, and then point it at an NFS/HTTP/FTP location for the
main package install stage.

>  Or do a network install: nfs should work really well over a virtual
> LAN. 
Yep, NFS or HTTP will work. NFS is slighty better if you have limited
memory in the guest, since it can execute-in-place, while HTTP needs to
use 60 MB or so of RAM just to hold the installer download.

Dan.
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