October 2009 - Libguestfs - Libguestfs List Archives

by Richard W.M. Jones

Bizarre uptick in the amount of XML reported by Ohloh here: http://www.ohloh.net/p/libguestfs/analyses/latest Which in one sense is true. We added some example XML output from virt-inspector to the repository: $ find -name '*.xml'|xargs wc -l 6822 ./inspector/example1.xml 7323 ./inspector/example2.xml 577 ./inspector/example3.xml 17 ./inspector/example4.xml 14739 total Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://et.redhat.com/~rjones/libguestfs/ See what it can do: http://et.redhat.com/~rjones/libguestfs/recipes.html

14 years, 9 months

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[PATCH] inspector: Generate language bindings for OCaml.

by Richard W.M. Jones

-- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones New in Fedora 11: Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 70 libraries supprt'd http://fedoraproject.org/wiki/MinGW http://www.annexia.org/fedora_mingw

14 years, 9 months

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FYI, lvs.ml: Unbound value Guestfs.create

by Jim Meyering

FYI, while "make" succeeded in this directory on Friday, I ran "make clean" today from the top, then "make" and got this: Making all in examples make[3]: Entering directory `/home/j/w/co/libguestfs/ocaml/examples' ocamlfind ocamlopt \ -warn-error A -I .. mlguestfs.cmxa lvs.ml -o lvs File "lvs.ml", line 11, characters 10-24: Error: Unbound value Guestfs.create make[3]: *** [lvs] Error 2 make[3]: Leaving directory `/home/j/w/co/libguestfs/ocaml/examples' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/j/w/co/libguestfs/ocaml' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/j/w/co/libguestfs' make: *** [all] Error 2 [Exit 2]

14 years, 9 months

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[PATCH libguestfs] build: fix compile error

by Jim Meyering

>From 3a09d409df89d72ca476ed829739b4aacf08735d Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Fri, 2 Oct 2009 16:09:19 +0200 Subject: [PATCH libguestfs] build: fix compile error Link demo scripts with just-build library, not the installed one. * ocaml/examples/Makefile.am (OCAMLFINDFLAGS): New variable. (lvs, viewer): Use it. This fix is based on a suggestion from Rich Jones. This addresses <http://bugzilla.redhat.com/526917>. --- ocaml/examples/Makefile.am | 9 ++++++--- 1 files changed, 6 insertions(+), 3 deletions(-) diff --git a/ocaml/examples/Makefile.am b/ocaml/examples/Makefile.am index b516647..3b9901a 100644 --- a/ocaml/examples/Makefile.am +++ b/ocaml/examples/Makefile.am @@ -6,15 +6,18 @@ if HAVE_OCAML noinst_SCRIPTS = lvs +OCAMLFINDFLAGS = -ccopt '-L $(top_builddir)/src/.libs' + lvs: lvs.ml - $(OCAMLFIND) ocamlopt -warn-error A -I .. mlguestfs.cmxa $< -o $@ + $(OCAMLFIND) ocamlopt $(OCAMLFINDFLAGS) \ + -warn-error A -I .. mlguestfs.cmxa $< -o $@ if BUILD_OCAML_VIEWER noinst_SCRIPTS += viewer viewer: throbber.ml xmllight_loader.mli xmllight_loader.ml viewer.ml - ocamlducefind opt \ + ocamlducefind opt $(OCAMLFINDFLAGS) \ -warn-error A \ -thread \ -package libvirt,lablgtk2,extlib,xml-light,ocamlduce,threads -I .. \ @@ -30,4 +33,4 @@ throbber.ml: Throbber.png Throbber.gif endif -endif \ No newline at end of file +endif -- 1.6.5.rc2.177.ga9dd6

14 years, 10 months

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[PATCH 0/2] Add RELAX NG schema and tests for virt-inspector --xml

by Richard W.M. Jones

-- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top

14 years, 10 months

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[PATCH] New tool: virt-edit

by Richard W.M. Jones

This adds a virt-edit command. This is already possible using guestfish: guestfish -i domain ><fs> vi /some/file but having a special command to do it makes the operation more obvious and easier. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://et.redhat.com/~rjones/libguestfs/ See what it can do: http://et.redhat.com/~rjones/libguestfs/recipes.html

14 years, 10 months

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[PATCH] inspector: Canonicalize device names (fix RHBZ#526717).

by Richard W.M. Jones

This seems to be the completed fix for: https://bugzilla.redhat.com/show_bug.cgi?id=526717 -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones Read my programming blog: http://rwmj.wordpress.com Fedora now supports 75 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora

14 years, 10 months

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[PATCH] run-*-locally: The programs are now virt-[tool], not virt-[tool].pl

by Richard W.M. Jones

All the run-*-locally scripts were broken ... Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v

14 years, 10 months

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[PATCH] inspector: Don't bomb if no kernels detected.

by Richard W.M. Jones

This is a partial fix for https://bugzilla.redhat.com/show_bug.cgi?id=526717 Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://et.redhat.com/~rjones/libguestfs/ See what it can do: http://et.redhat.com/~rjones/libguestfs/recipes.html

14 years, 10 months

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[PATCH] v2v-snapshot: Improve documentation

by Matthew Booth

Highlight that the tool is not a general purpose snapshotting tool. Add some examples. --- snapshot/v2v-snapshot.pl | 79 +++++++++++++++++++++++++++++++++++++++++++--- 1 files changed, 74 insertions(+), 5 deletions(-) diff --git a/snapshot/v2v-snapshot.pl b/snapshot/v2v-snapshot.pl index ce66bca..8408d13 100755 --- a/snapshot/v2v-snapshot.pl +++ b/snapshot/v2v-snapshot.pl @@ -48,11 +48,13 @@ v2v-snapshot - Convert a guest to use a qcow2 snapshot for storage =head1 DESCRIPTION -v2v-snapshot is a tool for creating a local snapshot of a guest's storage. It -is suitable for use when making a change to a guest which might have to be -rolled back. It is not intended as a long-term storage option. v2v-snapshot -creates a qcow2 snapshot for all a guest's block devices and updates the guest's -libvirt domain to use them. +v2v-snapshot is a tool for creating a local snapshot of a guest's storage. It is +suitable for use when making a change to a guest which might have to be rolled +back. v2v-snapshot creates a qcow2 snapshot for all a guest's block devices and +updates the guest's libvirt domain to use them. + +B<v2v-snapshot can only snapshot a guest which is shutdown. It is not intended +as a long-term storage option.> When a change has been tested, v2v-snapshot can either commit the change, which will update the original storage with the changes made to the snapshot, or @@ -757,6 +759,73 @@ sub _get_xml_path return $xmldir.'/'._get_guest_name($dom).'.xml'; } +=head1 EXAMPLES + +=head2 Snapshot a local guest + +=over + +This example covers snapshotting a guest which is available through libvirt on +the local machine. The guest domain's name is I<E<lt>guestE<gt>>. + +First ensure the guest is shutdown: + + # virsh destroy <guest> + +Snapshot the guest: + + # v2v-snapshot <guest> + +Start the guest, make some changes, modify hardware, test changes. To commit +the changes: + + # v2v-snapshot --commit <guest> + +Alternatively, to rollback the changes: + + # v2v-snapshot --rollback <guest> + +=back + +=head2 Snapshot an imported guest + +=over + +This example covers snapshotting a guest which has been copied from another +machine. For this to work you must have the domain XML exported from the origin +machine: + + (Origin) # virsh dumpxml <guest> > guest.xml + +You must also present all of the guest's disk images to the local machine in the +locations specified in guest.xml. If copying the images, the easiest +way to achieve this is to copy it to the same path on the local machine as it +had on the origin machine. If the storage can be remotely mounted, it should be +presented to the local machine with the same paths as on the origin machine. If +the location of the storage must change, you must manually edit guest.xml to +reflect the new paths. + +If it is possible to create the domain on the local machine: + + # v2v-snapshot -i libvirtxml guest.xml + +This command will create the imported domain locally with snapshot storage. + +If it is not possible to create the domain locally, for example because it is a +Xen domain and the local libvirt cannot manage Xen domains: + + # v2v-snapshot -o snapshot-guest.xml -i libvirtxml guest.xml + +This command does not attempt the create the domain locally, which would fail. +Instead it writes updated domain XML to I<snapshot-guest.xml>. The disks in +snapshot-guest.xml point to the newly created snapshot volumes. + +The latter method of import is intended for use when importing a Xen domain from +a origin machine for conversion with L<virt-v2v(1)>. virt-v2v should be given +I<snapshot-guest.xml> as the domain XML. + +=back + =head1 SEE ALSO L<virt-v2v(1)>, -- 1.6.2.5

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Libguestfs October 2009