Line 25: | Line 25: | ||
their native formats and transforms them into a tree. Configuration changes | their native formats and transforms them into a tree. Configuration changes | ||
are made by manipulating this tree and saving it back into native config | are made by manipulating this tree and saving it back into native config | ||
files."<ref>http://augeas.net/</ref> | files."<ref>http://augeas.net/</ref> Now <code>libguestfs</code> "supports Augeas, so you can | ||
use Augeas to edit configuration files within the virtual machine." | |||
Richard will be working on creating a Fedora RPM of <code>libguestfs</code> this week. | |||
<references /> | |||
==== Virtual Machine Backup virt-backup ==== | |||
The discussion of <code>libguestfs</code> led | |||
[[JanONDREJ|Jan ONDREJ]] to | |||
reveal<ref>http://www.redhat.com/archives/fedora-virt/2009-April/msg00068.html</ref> | |||
a tool in development, <code>virt-backup</code><ref>http://www.salstar.sk/pub/temp/virt-backup</ref>. | |||
This script can be used to | |||
* Make online backups, when virtual server is running. | |||
* Transfer partitions over the network while the virtual server is off. | |||
<references /> | <references /> |
Revision as of 16:22, 12 April 2009
Virtualization
In this section, we cover discussion on the @et-mgmnt-tools-list, @fedora-xen-list, and @libvirt-list of Fedora virtualization technologies.
Contributing Writer: Dale Bewley
Fedora Virtualization List
This section contains the discussion happening on the fedora-virt list.
Guest Configuration with augeas and libguestfs
After blogging[1] just last week that "Nothing much is coded at the moment", the prolific Richard Jones
announced[2]
he has added support to
for his latest project,
augeas
libguestfs
[3]. libguestfs
"lets you examine and modify
virtual machine disk images, so you can perform sysadmin tasks on
virtual machines without needing to bring them up or log into them."
"Augeas is a configuration editing tool. It parses configuration files in
their native formats and transforms them into a tree. Configuration changes
are made by manipulating this tree and saving it back into native config
files."[4] Now libguestfs
"supports Augeas, so you can
use Augeas to edit configuration files within the virtual machine."
Richard will be working on creating a Fedora RPM of libguestfs
this week.
Virtual Machine Backup virt-backup
The discussion of libguestfs
led
Jan ONDREJ to
reveal[1]
a tool in development, virt-backup
[2].
This script can be used to
- Make online backups, when virtual server is running.
- Transfer partitions over the network while the virtual server is off.
Virtualization Technology Preview Repo
Daniel Berrange followed up the recent release scheduling conversation (FWN#169 [1]) with a "braindump"[2].
"The obvious problem with what we do for
at the moment, is
that we are introducing major new features into the stable release
stream". Adding "I think it would be desirable to get the stable Fedora releases onto a
pretty strong bugfix only policy..."
libvirt
Daniel suggested "a 'virt-preview' YUM repository for the most recent stable stream (ie F10, but not F9)"
as a way to achieve this "bugfix only policy", and allow users access development versions of libvirt
"without having to include & debug the rest of rawhide". Daniel summaried the "braindump".
"So in summary":
- All new upstream releases built in rawhide
- New upstream releases also built in stable preview branch if possible
- Only bugfixes built in stable updates/updates-testing branch
- In exceptional circumstances, rebase for preview branch can be built to updates/updates-testing after alot of positive testing
"This would":
- Ensure users of stable Fedora release have high confidence in quality of the updates/updates-testing stream
- Allow users to trivially test new upstream rebases while staying on the stable distro stream
- Improve testing coverage of major new rawhide features without using the stable release stream users as guinea pigs
Mark McLoughlin thought[3] "this would be hugely useful to people interested in the latest virt bits, but without a testing machine for running rawhide." And even proposed a name for the proposed repository, "How about 'virt-hide' ? :)". Mark also reverenced these FESCo approved guidelines[4] relevant to package maintainers who wish to update a package on an already-released branch.
- ↑ http://fedoraproject.org/wiki/FWN/Issue169#More_Formal_libvirt_Release_Scheduling
- ↑ http://www.redhat.com/archives/fedora-virt/2009-April/msg00008.html
- ↑ http://www.redhat.com/archives/fedora-virt/2009-April/msg00010.html
- ↑ http://fedoraproject.org/wiki/PackageMaintainers/Package_update_guidelines
Fedora Virtualization Status Report
Mark McLoughlin reminds[1] us "It's only a matter of days until the F11 tree freezes and the list of bugs isn't getting any shorter!"
Read on for more coverage of virtualization developments in the past week.
Fedora Xen List
This section contains the discussion happening on the fedora-xen list.
Experimental Dom0 Kernel Update
Michael Young I asked MY where he got his dom0 patches:
The patches were generated using git from the git repository git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git combined with a mainline kernel git repository such as git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-2.6-stable.git possibly with a bit of manual merging. So there isn't a single URL. I am not sure which is the best branch of the xen git to use at the moment, because the effort is focused on egtting the patches into the main kernel during the merge window.
If it helps Jeremy commented about the state of the xen repository in this email http://lists.xensource.com/archives/html/xen-devel/2009-04/msg00151.html My most recent kernel was built using the push2/xen/dom0/master branch, though I think I might wait a week or so to see what gets merged before doing another update.
Libvirt List
This section contains the discussion happening on the libvir-list.