guest install with loop backed FC5 dvd iso image

[Ron Wahler]

I am trying to do a guest install of FC5 on a FC5 machine. Xen is running. I
am having problems
with setting up a proper guest location for the install.

I did a loop back mount of a DVD iso image for FC5, then shared it with NFS
in theory I want to use this to load my guest in xen.

mount -o loop -t iso9660 FC-5-i386-DVD.iso /mnt

then share /mnt on nfs.


xenguest-install.py
What is the name of your virtual machine? guest1
 How much RAM should be allocated (in megabytes)? 256
 What would you like to use as the disk (path)? /home/myhome/guest1
 What is the install location? nfs:192.168.1.100:/mnt

is the path here correct or do I need a sub directory of the ISO image for
location ?

here is the debug:

Starting install...
libvir: Xen Daemon error : POST operation failed: No such domain guest1a
Failed to get devices for domain guest1
Traceback (most recent call last):
  File "/usr/sbin/xenguest-install.py", line 460, in ?
    main()
  File "/usr/sbin/xenguest-install.py", line 451, in main
    start_paravirt_install(name, ram, disk, mac, uuid, src, options.extra)
  File "/usr/sbin/xenguest-install.py", line 331, in start_paravirt_install
    dom = conn.createLinux(cfgxml, 0)
  File "/usr/lib/python2.4/site-packages/libvirt.py", line 207, in
createLinux
    if ret is None:raise libvirtError('virDomainCreateLinux() failed')
libvirt.libvirtError: virDomainCreateLinux() failed



Has anyone seen this problem and know how to work around it.

thanks,
Ron Wahler
http://www.positive-logic.net

Xen NTPL

[Patricio A. Bruna]

Has the xen kernel supports for NTPL?

-- 
Patricio Bruna V.
Red Hat Certified Engineer
IT Linux Ltda.
http://www.it-linux.cl
Fono/Fax: [phone]
Cel: ([phone]

Xen NTPL

[Rik van Riel]

On Thu, 22 Jun 2006, Patricio Bruna V. wrote:

>  Has the xen kernel supports for NTPL? 
Yes, NPTL just works in the Xen kernel.

The only issue there ever was was a performance issue,
with the glibc variant that uses negative segment
offsets.

Current Fedora has a glibc variant that does address
calculations to avoid the negative segment offsets.
This removes the performance penalty FC4 had.

-- 
All Rights Reversed

Xen NTPL

[Horms]

In article <Pine.LNX.4.64.0606222230000.24905(a)cuia.boston.redhat.com&gt; you wrote:
>  On Thu, 22 Jun 2006, Patricio Bruna V. wrote:
>  
> > Has the xen kernel supports for NTPL?
>  
>  Yes, NPTL just works in the Xen kernel.
>  
>  The only issue there ever was was a performance issue,
>  with the glibc variant that uses negative segment
>  offsets.
>  
>  Current Fedora has a glibc variant that does address
>  calculations to avoid the negative segment offsets.
>  This removes the performance penalty FC4 had. 
Hi Rik,

Is this a fedora-specific feature, or is it something I can expect
to show up in mainline glibc?

-- 
Horms                                           
H: http://www.vergenet.net/~horms/          W: http://www.valinux.co.jp/en/

Xen NTPL

[Rik van Riel]

On Mon, 26 Jun 2006, Horms wrote:

>  > Current Fedora has a glibc variant that does address
>  > calculations to avoid the negative segment offsets.
>  > This removes the performance penalty FC4 had.
>  
>  Is this a fedora-specific feature, or is it something I can expect
>  to show up in mainline glibc? 
I would expect the source code to be in mainline, but I
do not know if any other distributions compile this
glibc variant.

-- 
All Rights Reversed

Xen NTPL

[Horms]

In article <Pine.LNX.4.64.0606260856200.17302(a)cuia.boston.redhat.com&gt; you wrote:
>  On Mon, 26 Jun 2006, Horms wrote:
>  
> > > Current Fedora has a glibc variant that does address
> > > calculations to avoid the negative segment offsets.
> > > This removes the performance penalty FC4 had.
> > 
> > Is this a fedora-specific feature, or is it something I can expect
> > to show up in mainline glibc?
>  
>  I would expect the source code to be in mainline, but I
>  do not know if any other distributions compile this
>  glibc variant. 
Thanks.

-- 
Horms                                           
H: http://www.vergenet.net/~horms/          W: http://www.valinux.co.jp/en/

[Ron Wahler]

Ok, solved this problem by reducing the memory in dom0 to 128 meg.

xm mem-set 0 128
and using 256 meg in the guest.  not a very graceful error but the blue
install FC5 screen is up.


Ron.



On 6/22/06, Ron Wahler <ron.wahler(a)gmail.com&gt; wrote:
>  I am trying to do a guest install of FC5 on a FC5 machine. Xen is running.
>  I am having problems
>  with setting up a proper guest location for the install.
>
>  I did a loop back mount of a DVD iso image for FC5, then shared it with
>  NFS
>  in theory I want to use this to load my guest in xen.
>
>  mount -o loop -t iso9660 FC-5-i386-DVD.iso /mnt
>
>  then share /mnt on nfs.
>
>
>  xenguest-install.py
>  What is the name of your virtual machine? guest1
>   How much RAM should be allocated (in megabytes)? 256
>   What would you like to use as the disk (path)? /home/myhome/guest1
>   What is the install location? nfs:192.168.1.100:/mnt
>
>  is the path here correct or do I need a sub directory of the ISO image for
>  location ?
>
>  here is the debug:
>
>  Starting install...
>  libvir: Xen Daemon error : POST operation failed: No such domain guest1a
>  Failed to get devices for domain guest1
>  Traceback (most recent call last):
>    File "/usr/sbin/xenguest- install.py", line 460, in ?
>      main()
>    File "/usr/sbin/xenguest-install.py", line 451, in main
>      start_paravirt_install(name, ram, disk, mac, uuid, src, options.extra)
>    File "/usr/sbin/xenguest- install.py", line 331, in
>  start_paravirt_install
>      dom = conn.createLinux(cfgxml, 0)
>    File "/usr/lib/python2.4/site-packages/libvirt.py", line 207, in
>  createLinux
>      if ret is None:raise libvirtError('virDomainCreateLinux() failed')
>  libvirt.libvirtError: virDomainCreateLinux() failed
>
>
>
>  Has anyone seen this problem and know how to work around it.
>
>  thanks,
>  Ron Wahler
>  http://www.positive-logic.net
>
>
>

[Ron Wahler]

this install if fighting me on every step.   So now I am progressing on the
FC5 guest install and
it can not access my nfs  /mnt drive with the FC5 dvd iso, it is shared R/W
from my dom0, any ideas to try ?  I get to the screen that asks for the nfs
server and directory to mount.


thanks,
Ron.

On 6/22/06, Ron Wahler <ron.wahler(a)gmail.com&gt; wrote:
>  I am trying to do a guest install of FC5 on a FC5 machine. Xen is running.
>  I am having problems
>  with setting up a proper guest location for the install.
>
>  I did a loop back mount of a DVD iso image for FC5, then shared it with
>  NFS
>  in theory I want to use this to load my guest in xen.
>
>  mount -o loop -t iso9660 FC-5-i386-DVD.iso /mnt
>
>  then share /mnt on nfs.
>
>
>  xenguest-install.py
>  What is the name of your virtual machine? guest1
>   How much RAM should be allocated (in megabytes)? 256
>   What would you like to use as the disk (path)? /home/myhome/guest1
>   What is the install location? nfs:192.168.1.100:/mnt
>
>  is the path here correct or do I need a sub directory of the ISO image for
>  location ?
>
>  here is the debug:
>
>  Starting install...
>  libvir: Xen Daemon error : POST operation failed: No such domain guest1a
>  Failed to get devices for domain guest1
>  Traceback (most recent call last):
>    File "/usr/sbin/xenguest- install.py", line 460, in ?
>      main()
>    File "/usr/sbin/xenguest-install.py", line 451, in main
>      start_paravirt_install(name, ram, disk, mac, uuid, src, options.extra)
>    File "/usr/sbin/xenguest- install.py", line 331, in
>  start_paravirt_install
>      dom = conn.createLinux(cfgxml, 0)
>    File "/usr/lib/python2.4/site-packages/libvirt.py", line 207, in
>  createLinux
>      if ret is None:raise libvirtError('virDomainCreateLinux() failed')
>  libvirt.libvirtError: virDomainCreateLinux() failed
>
>
>
>  Has anyone seen this problem and know how to work around it.
>
>  thanks,
>  Ron Wahler
>  http://www.positive-logic.net
>
>
>