January 2010 - Libguestfs - libguestfs List Archives

libguestfs on Ubuntu
by Richard W.M. Jones 15 Feb '10

15 Feb '10

So I got a lot further building libguestfs on Ubuntu, up to the point where I can boot the appliance and run some simple commands. We need to push some patches upstream, and there are still some things in Ubuntu itself which are broken. This documents how far I've got. (1) libguestfs from git, Ubuntu 9.10, all updated to the latest versions. You will of course also need to read the README file and install the long list of dependencies, all of which are in the Ubuntu repositories. http://git.annexia.org/?p=libguestfs.git;a=summary http://libguestfs.org/README.txt (2) I'm going to post patches as follow-ups to this email, of which most/all will be required. (3) You will need debirf 0.25. I installed it from: http://gb.archive.ubuntu.com/ubuntu/pool/universe/d/debirf/ (4) This is how I'm configuring: ./autogen.sh \ --with-readline \ --with-repo=karmic \ --with-mirror=http://gb.archive.ubuntu.com/ubuntu/ \ --enable-debug-command (5) make (6) 'make check' fails during the Gnulib tests. (7) After building you can do a quick sanity check: $ ./fish/guestfish alloc /tmp/test.img 10M : run : list-devices /dev/sda If it doesn't work, add the '-v' option and post the full output here. I was able to run some basic guestfish commands, but I didn't yet test it extensively. Rich. ---------------------------------------------------------------------- $ ./fish/guestfish Welcome to guestfish, the libguestfs filesystem interactive shell for editing virtual machine filesystems. Type: 'help' for help with commands 'quit' to quit the shell ><fs> alloc /tmp/test.img use 'alloc file size' to create an image ><fs> alloc /tmp/test.img 10M ><fs> run open /dev/kvm: No such file or directory Could not initialize KVM, will disable KVM support ><fs> list-devices /dev/sda ><fs> help part-disk NAME part-disk - partition whole disk with a single primary partition SYNOPSIS part-disk device parttype DESCRIPTION This command is simply a combination of "part_init" followed by "part_add" to create a single primary partition covering the whole disk. "parttype" is the partition table type, usually "mbr" or "gpt", but other possible values are described in "part_init". This command is dangerous. Without careful use you can easily destroy all your data. ><fs> part-disk /dev/sda mbr ><fs> mkfs ext3 /dev/sda1 ><fs> mount /dev/sda1 / ><fs> touch /hello ><fs> umount-all ><fs> list-partitions /dev/sda1 ><fs> sync ><fs> $ strings /tmp/test.img lost+found hello lost+found hello -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming blog: http://rwmj.wordpress.com Fedora now supports 80 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora

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[FOR REVIEW ONLY] ESX work in progress
by Matthew Booth 30 Jan '10

30 Jan '10

The following patches are where I'm currently at with ESX support. I can now import a domain from ESX along with its storage. Note that I'm not yet doing any conversion. In fact, I've never even tested past the import stage (I just had an exit in there). The meat is really in the 4th patch. The rename of MetadataReader->Connection was because the Connection is now really providing the whole guest, rather than just its metadata. I intend to add more transfer methods once ESX conversion is working. A copy method for LibVirtXML is required at least. _storage_iterate in Sys::VirtV2V::Connection does interesting things with the domain's storage devices. I'd especially appreciate a close look there. Matt

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[PATCH 0/2] hivex shell
by Richard W.M. Jones 29 Jan '10

29 Jan '10

Currently 'hivexget' is a very clumsy command line tool which only lets you display a single registry key in a hive file, for example: $ hivexget SOFTWARE '\Microsoft\Windows\TabletPC\TabSetup\' "TabletSetup"=dword:00000000" This is inflexible and got really annoying as I was trying to explore these hive files in preparation for adding write support to hivex. The first patch implements a simple interactive shell which allows you to 'cd' around a hive and list out values and subkeys. For example: $ ./hivex/hivexsh SOFTWARE Welcome to hivexsh, the hivex interactive shell for examining Windows Registry binary hive files. Type: 'help' for help summary 'quit' to quit the shell SOFTWARE\> ls ATI Technologies Classes Clients Intel Microsoft ODBC Policies RegisteredApplications Sonic Wow6432Node SOFTWARE\> cd \Microsoft\Windows\TabletPC\TabSetup SOFTWARE\Microsoft\Windows\TabletPC\TabSetup> ls SOFTWARE\Microsoft\Windows\TabletPC\TabSetup> lsval "TabletSetup"=dword:00000000" SOFTWARE\Microsoft\Windows\TabletPC\TabSetup> cd .. SOFTWARE\Microsoft\Windows\TabletPC> ls Snipping Tool TabSetup The (later) write part will enhance this shell to allow hive modifications, but these patches do not contain that change yet. The second patch removes the old C-based hivexget and replaces it with a simple shell script based around hivexsh. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/

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[PATCH] Set locale in C programs so l10n works (RHBZ#559962).
by Richard W.M. Jones 29 Jan '10

29 Jan '10

Potential fix for https://bugzila.redhat.com/559962 Rich. -- 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

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[PATCH 0/13 v2] Prepare for adding write support to hivex (Windows registry) library
by Richard W.M. Jones 28 Jan '10

28 Jan '10

This series of patches, now up to 13 parts, contains lots of bug fixes and groundwork required before we add write support to the hivex library. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming blog: http://rwmj.wordpress.com Fedora now supports 80 OCaml packages (the OPEN alternative to F#) http://cocan.org/getting_started_with_ocaml_on_red_hat_and_fedora

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how do i use a blob appliance the compiling from source
by Piavlo 27 Jan '10

27 Jan '10

Hi, Since I've never succeeded to compile libguestfs from source on Gentoosince the build process of the appliance based on debootstrap fails, I'm wondering how can I tell the compilation process to use a precompiled blob appliance? Also can I use non fedora & debian but use some minimal gentoo based appliance I have? Thanks Alex

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[PATCH] Remove function wait_ready in virt-v2v.pl
by jyang＠redhat.com 27 Jan '10

27 Jan '10

From: Osier Yang <jyang(a)redhat.com> --- v2v/virt-v2v.pl | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/v2v/virt-v2v.pl b/v2v/virt-v2v.pl index 9eee590..0ad3c6e 100755 --- a/v2v/virt-v2v.pl +++ b/v2v/virt-v2v.pl @@ -265,7 +265,6 @@ sub get_guestfs_handle $g->set_selinux(1); $g->launch (); - $g->wait_ready (); return $g; } -- 1.6.4.2

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[PATCH] supermin: Prevent multilib corruption (RHBZ#558593).
by Richard W.M. Jones 26 Jan '10

26 Jan '10

-- Richard Jones, Virtualization Group, Red Hat http://people.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

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[PATCH] Ignore more unreadable files in the host
by Richard W.M. Jones 25 Jan '10

25 Jan '10

This is a RHEL 6 related patch. For some reason as yet not determined, RHEL 6 contains a lot more unreadable files than Fedora, which, because they are unreadable, cannot be added to the supermin appliance on the fly. I think this is not a good long-term solution: We should detect these files and include them in the base part of the supermin appliance. But for now this works around the issue on RHEL 6. 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

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[PATCH version 2] guestfish: Use xstrtol to parse integers (RHBZ#557655).
by Richard W.M. Jones 25 Jan '10

25 Jan '10

-- 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

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