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[http://www.redhat.com/mailman/listinfo/et-mgmt-tools et-mgmt-tools list]
 
[http://www.redhat.com/mailman/listinfo/et-mgmt-tools et-mgmt-tools list]
  
==== Good Bye to ET-Mgmt-Tools List ====
+
==== ====
[[DanielBerrange|Daniel Berrange]]
 
announced<ref>http://www.redhat.com/archives/et-mgmt-tools/2009-July/msg00046.html</ref> the end of life for the et-mgmt-tools list and the birth of the @virt-tools-list. "In retrospect this was a really bad choice of names for a mailing list
 
and causes endless confusion for people wrt what to discuss where. Most
 
of the emerging technology projects have lists of their own
 
({{package|cobbler}}<ref>http://fedorahosted.org/mailman/listinfo/cobbler</ref><ref>http://fedorahosted.org/mailman/listinfo/cobbler-devel</ref>,
 
{{package|augeas}}<ref>http://www.redhat.com/mailman/listinfo/augeas-devel</ref>,
 
{{package|libguestfs}}<ref>http://www.redhat.com/mailman/listinfo/libguestfs</ref>,
 
{{package|libvirt}}<ref>http://www.redhat.com/mailman/listinfo/libvir-list</ref>)
 
and it is about time that {{package|virt-manager}} and friends joined them."
 
 
 
"To that end we have created a new mailing list  'virt-tools-list'<ref>http://www.redhat.com/mailman/listinfo/virt-tools-list</ref>. This
 
will be the new home for all developer & user discussions relating to
 
the following applications:"
 
* virt-manager
 
* virt-viewer
 
* virt-install
 
* virt-clone
 
* virt-image
 
* virt-convert
 
 
 
 
<references />
 
<references />
  
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[http://www.redhat.com/mailman/listinfo/fedora-virt fedora-virt list].
 
[http://www.redhat.com/mailman/listinfo/fedora-virt fedora-virt list].
  
==== Virtual Machine Disk Setup Tips ====
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==== ====
[[RichMahn|Rich Mahn]]
 
recognized<ref>http://www.redhat.com/archives/fedora-virt/2009-July/msg00141.html</ref>
 
"that the best
 
performance for virtual disks is with the backing storage on the host
 
being a parititon or LV.  Since I want some flexibility I will use
 
LVs, with virtio disks on most of the VMs." But Rich
 
had
 
several questions (paraphrased below) about how best to configure the backing stores for virtual machines and the disks within them. 
 
[[DanielBerrange|Daniel Berrange]] provided some answers (also paraphrased
 
below).
 
 
 
* '''Q:''' If each VM needs three file systems: {{filename|/boot}}, {{filename|root}}, and {{filename|swap}}. "Is it better to create three LVs (each) on the hosts, and treat it as three separate disks on the VMs?"
 
: '''A:''' "There's no point separating /boot & root onto separate virtual disks." "The only separation I'd do is for the OS system disks, vs application data disks..." This makes it easier to provision a new VM with the latest disto and reassign the data disk to the new guest.
 
 
 
* '''Q:''' "Do I get better performance/stability by NOT using lvm on the VMs?"
 
: '''A:''' "LVM makes is easier to resize guest FS. eg add a second disk to the guest, format it as a LVM PV and add it to your VG.  That's pretty much only wayto add more capacity on a running guest."
 
 
 
* '''Q:''' "Do I get the best performance/stability by creating an LV for each disk I need, and then NOT partitioning it on the VM, but using the whole disk for a file system?"
 
: '''A:''' "Anaconda will refuse to install onto a raw disk, it mandates partitioning. Second point is that not using a partition table can cause unexpected problems..."
 
 
 
* '''Q:''' "Are these issues too miniscule in their effects that I probably shouldn't even be worrying about" trying to avoid using partitions and LVM?
 
: '''A:''' "That's certainly my opinion. Sure you get some performance but you loose the great administrative flexibility  of LVM."
 
 
 
 
<references />
 
<references />
  
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[http://www.redhat.com/mailman/listinfo/libguestfs libguestfs list].
 
[http://www.redhat.com/mailman/listinfo/libguestfs libguestfs list].
  
==== New Release libguestfs 1.0.59 ====
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==== ====
[[RichardJones|Richard Jones]]
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<references />
announced<ref>http://www.redhat.com/archives/libguestfs/2009-July/msg00023.html</ref>
 
the release of {{package|libguestfs}} 1.0.59.
 
  
'''New Features:'''
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=== Virtualization Tools List ===
* Support for Linux extended attributes.
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This section contains the discussion happening on the
* Allow guestfish to be controlled remotely, so you can use one guestfish instance in a long-running shell script.
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[http://www.redhat.com/mailman/listinfo/virt-tools-list virt-tools-list list].
* Support for reiserfs.
 
* New function 'guestfs_zfile' -- 'file' inside compressed files.
 
* New guestfish command 'reopen' -- reopen guestfish connection.
 
* guestfish -x option (echo commands).
 
* New function 'guestfs_version' to get the library version.
 
 
 
See previous release announcement for 1.0.57 in
 
FWN#184<ref>http://fedoraproject.org/wiki/FWN/Issue184#New_Mailing_List_and_New_Releases_of_libguestfs</ref>
 
and be sure to see the project homepage<ref>http://libguestfs.org/</ref> for
 
extensive usage examples.
 
  
 +
====  ====
 
<references />
 
<references />
  
==== New Hypervisor Migration Tool virt-v2v ====
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=== Fedora Xen List ===
[[MatthewBooth|Matthew Booth]]
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This section contains the discussion happening on the
posted<ref>http://www.redhat.com/archives/libguestfs/2009-July/msg00024.html</ref>
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[http://www.redhat.com/mailman/listinfo/fedora-xen fedora-xen list].
his "initial thoughts on the design for the v2v tool". This tool will be used
 
to implement the planned Fedora 12 feature "Xen to KVM Migration"<ref>http://fedoraproject.org/wiki/Features/Xen_to_KVM_migration</ref>.
 
  
 +
====  ====
 
<references />
 
<references />
  
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[http://www.redhat.com/mailman/listinfo/libvir-list libvir-list].
 
[http://www.redhat.com/mailman/listinfo/libvir-list libvir-list].
  
==== Split RPC Dispatching from Remote API Handlers ====
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==== ====
[[DanielBerrange|Daniel Berrange]]
 
posted<ref>http://www.redhat.com/archives/libvir-list/2009-July/msg00303.html</ref>
 
a set of 9 patches.
 
"The current <code>libvirtd</code> remote protocol dispatch code is written in
 
such a way that assumes the only incoming messages from clients
 
are method calls. This makes it very hard to support data streams.
 
This patch series does an incrmental refactoring of alot of code
 
to allow data streams to be easily wired in."
 
 
 
 
<references />
 
<references />
  
==== Allow QEMU VMs to be Run Unprivileged ====
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=== oVirt Devel List ===
[[DanielBerrange|Daniel Berrange]]
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This section contains the discussion happening on the
submitted<ref>http://www.redhat.com/archives/libvir-list/2009-July/msg00390.html</ref> a patch which
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[http://www.redhat.com/mailman/listinfo/ovirt-devel ovirt-devel list].
"makes it such that the" privileged "<code>libvirtd</code> daemon can
 
run unprivileged QEMU guests. The default remains unchanged with
 
QEMU running as root:root, but the package maintainer can request
 
an alternative default user at build time, and the sysadmin can
 
also override this at install time with {{filename|/etc/libvirt/qemu.conf}}."
 
 
 
This patch is in support of the planned [[releases/12 | Fedora 12]] feature "VirtPrivileges"<ref>http://fedoraproject.org/wiki/Features/VirtPrivileges</ref>.
 
 
 
<references />
 
 
 
==== cgroups Support in QEMU Driver ====
 
[[DanielBerrange|Daniel Berrange]]
 
added<ref>http://www.redhat.com/archives/libvir-list/2009-July/msg00435.html</ref>
 
"cgroups<ref>http://www.mjmwired.net/kernel/Documentation/cgroups.txt</ref> support to the QEMU driver."
 
 
 
<references />
 
 
 
==== Experimental Tunnelled Migration ====
 
[[ChrisLalancette|Chris Lalancette]]
 
posted<ref>http://www.redhat.com/archives/libvir-list/2009-July/msg00433.html</ref>
 
"the current version of the tunnelled migration patch, based
 
upon [[DanielBerrange|Daniel Berrange]]'s generic datastream work.  In order to use this work, you must first
 
grab danpb's data-streams git branch<ref>http://gitorious.org/~berrange/libvirt/staging</ref>". Chris's work on secure guest migration was covered in
 
FWN #168<ref>http://fedoraproject.org/wiki/FWN/Issue168#Secure_Guest_Migration_Draft_Patch</ref>.
 
  
 +
====  ====
 
<references />
 
<references />

Revision as of 23:59, 26 July 2009


Virtualization

In this section, we cover discussion of Fedora virtualization technologies on the @et-mgmnt-tools-list, @fedora-virt, @fedora-xen-list, @libguestfs, @libvirt-list, @virt-tools-list, and @ovirt-devel-list lists.

Contributing Writer: Dale Bewley

Enterprise Management Tools List

This section contains the discussion happening on the et-mgmt-tools list


Fedora Virtualization List

This section contains the discussion happening on the fedora-virt list.


Libguestfs List

This section contains the discussion happening on the libguestfs list.


Virtualization Tools List

This section contains the discussion happening on the virt-tools-list list.


Fedora Xen List

This section contains the discussion happening on the fedora-xen list.


Libvirt List

This section contains the discussion happening on the libvir-list.


oVirt Devel List

This section contains the discussion happening on the ovirt-devel list.