October 2009 - Libguestfs - libguestfs List Archives

[PATCH libguestfs] build: tell gnulib-tool that this is an lgplv2+ library
by Jim Meyering 26 Oct '09

26 Oct '09

This merely enforces (wrt gnulib) the existing convention that libguestfs is covered by LGPLv2+ . >From 99a8fab0fa0474b4ab3959a5bd5867779a1d08d6 Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Mon, 26 Oct 2009 16:01:06 +0100 Subject: [PATCH libguestfs] build: tell gnulib-tool that this is an lgplv2+ library * bootstrap: Invoke gnulib-tool with --lgpl=2. --- bootstrap | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/bootstrap b/bootstrap index c92d1e1..a4ea29d 100755 --- a/bootstrap +++ b/bootstrap @@ -77,6 +77,7 @@ warnings ' $gnulib_tool \ + --lgpl=2 \ --avoid=dummy \ --with-tests \ --m4-base=m4 \ -- 1.6.5.2.344.ga473e

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[PATCH 0/3] Handle NTFS 3g case sensitive Windows paths in the daemon
by Richard W.M. Jones 26 Oct '09

26 Oct '09

In the current Perl library we have a function called resolve_windows_path which handles the useful [for Windows guests] case where we need to resolve the true, case-sensitive path behind a case-insensitive Windows path. For example, a Windows path like "C:\Windows\System32" can be presented to Linux by NTFS 3g in a variety of ways, eg: /WINDOWS/system32 /WINDOWS/SYSTEM32 depending entirely on the inconsequential details of how it was originally created. Windows doesn't care about case sensitivity, but NTFS 3g does. Since resolve_windows_path is a very useful function, the first patch moves it into the daemon. The new API is called "guestfs_case_sensitive_path". The second patch adds some useful functionality to guestfish, so you can use Windows-style paths, like this: touch win:C:\windows\foo (Note that all ordinary paths must begin with a '/' char, so this can't conflict with any existing, working scripts). The third patch deprecates resolve_windows_path in the Perl code and replaces it with calls to $g->case_sensitive_path. Rich. -- 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 0/2] New API: case_sensitive_path
by Richard W.M. Jones 26 Oct '09

26 Oct '09

This is the previously controversial 1/3 patch, split into two parts. The first patch contains these changes from last time: - set errno = 0 before readdir, and check for errors after - check for other errors from the chdir call which weren't ENOTDIR - the documentation is clarified about when you might use this function - more comprehensive tests, including the corner cases Matt mentioned. The second patch changes the chdir(2) implementation to use openat/ fdopendir. I'm not convinced that this is a good thing since the chdir implementation is much clearer to understand, and the chance of the daemon ever becoming multithreaded is next to nil. 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] Set LC_ALL=C before running qemu.
by Richard W.M. Jones 26 Oct '09

26 Oct '09

This patch by no means covers all the cases where we run external programs and expect to parse their output without setting LC_ALL=C. But it's a good start. 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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Supermin appliance changes
by Richard W.M. Jones 22 Oct '09

22 Oct '09

I've ported the supermin appliance capabilities from libguestfs into febootstrap >= 2.5: http://git.et.redhat.com/?p=febootstrap.git;a=commit;h=76b7711268a6b0c09299… Once that has rolled out into Fedora (in about 2 weeks) I will remove the code from libguestfs and just have it use febootstrap. There should be no visible changes, but developers will need to upgrade to febootstrap 2.5 as soon as it comes available. More here: http://rwmj.wordpress.com/2009/10/22/supermin-appliance-now-in-febootstrap/ 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] Fall back if /sbin/start_udev fails
by Charles Duffy 21 Oct '09

21 Oct '09

Howdy. I have an appliance in which /sbin/start_udev exists but does not run successfully: /sbin/start_udev: line 36: /etc/init.d/functions: No such file or directory This prevents the "modprobe virtio_net" line (among other things) from being invoked. The attached patch is what I'm applying locally to libguestfs-1.0.74 to work around the impact of this issue.

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[PATCH 0/2] virt-tar and virt-ls
by Richard W.M. Jones 20 Oct '09

20 Oct '09

These are general updates to: https://www.redhat.com/archives/libguestfs/2009-October/msg00037.html [Libguestfs] [PATCH 4/5] New tool: virt-tar and: https://www.redhat.com/archives/libguestfs/2009-October/msg00038.html [Libguestfs] [PATCH 5/5] New tool: virt-ls The code uses die "prog: ...\n". The parameters to virt-tar are swapped so they always go in source -> destination order, ie: virt-tar -zx myguest /home home.tar.gz virt-tar -zu myguest uploadstuff.tar.gz /tmp and these parameters are checked for sanity which should make it harder to make mistakes. (The guest name still has to come first because of other limitations). Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.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

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[PATCH] guestfs_find: Fix memory leak of sysrootdir.
by Richard W.M. Jones 20 Oct '09

20 Oct '09

This fixes a memory leak in the current code for guestfs_find (in the daemon). Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.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

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[PATCH 1/3] Add guestfs_find0 API call which doesn't have limits
by Richard W.M. Jones 20 Oct '09

20 Oct '09

The current guestfs_find API call contains an undocumented limit: It needs to marshall the whole list of filenames into a single protocol message. Unfortunately just about any Linux guest breaks this limit if you try 'guestfs_find ("/")' so this isn't much use. These patches add a new API call (find0) which breaks this limit by using a FileOut parameter. It's slightly harder to use than guestfs_find, but better suited to program cases (guestfs_find remains, of course). We also update virt-ls to use this in the 'virt-ls -R' case. 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 0/5] Add new tools virt-tar and virt-ls and tidy up the tools code
by Richard W.M. Jones 20 Oct '09

20 Oct '09

This patch series starts by tidying up the code for the virt-cat, virt-df, virt-edit, etc tools, moving them into a single directory and making the build system much simpler as a consequence. Then we add two new tools, virt-tar (a general purpose archive and upload tool) and virt-ls (for listing directories). No new functionality is enabled by these tools -- that is to say, you can do everything that these tools do using guestfish -- but having separate programs and manual pages for them should make them more accessible for simple tasks to some users. Rich. .gitignore | 7 +- HACKING | 18 +-- Makefile.am | 24 ++-- cat/Makefile.am | 45 ------ cat/run-cat-locally | 52 ------- cat/virt-cat | 194 ------------------------ configure.ac | 25 +--- df/Makefile.am | 45 ------ df/run-df-locally | 52 ------- df/virt-df | 366 --------------------------------------------- edit/Makefile.am | 45 ------ edit/run-edit-locally | 52 ------- edit/virt-edit | 210 -------------------------- guestfish.pod | 4 +- po/POTFILES.in | 10 +- rescue/Makefile.am | 45 ------ rescue/run-rescue-locally | 53 ------- rescue/virt-rescue | 169 --------------------- tools/Makefile.am | 50 ++++++ tools/run-locally | 56 +++++++ tools/virt-cat | 194 ++++++++++++++++++++++++ tools/virt-df | 366 +++++++++++++++++++++++++++++++++++++++++++++ tools/virt-edit | 213 ++++++++++++++++++++++++++ tools/virt-ls | 242 ++++++++++++++++++++++++++++++ tools/virt-rescue | 173 +++++++++++++++++++++ tools/virt-tar | 275 ++++++++++++++++++++++++++++++++++ 26 files changed, 1603 insertions(+), 1382 deletions(-) -- 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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