April 2009 - virt - Fedora Mailing-Lists

Re: [fedora-virt] any possible conflict between host and guest "VolGroup00" VGs?

by Richard W.M. Jones

On Tue, Apr 21, 2009 at 07:20:22AM -0400, Robert P. J. Day wrote: > > http://et.redhat.com/~rjones/libguestfs/ > > and that's ready to go, is it? i'll give it a try. You get to keep both pieces if it breaks at the moment. A few tips: (a) Use the RPMs from my website: http://et.redhat.com/~rjones/libguestfs/files/ (b) If you're on Fedora 10, then you *HAVE TO* upgrade to the Rawhide version of qemu, which is fairly painless: yum --enablerepo=rawhide install qemu (c) If you have any other problems, post on fedora-virt list. - - - The following tips only apply if you are building from source instead of using the RPMs. (i) There is no febootstrap in Fedora 10 yet (I'm still waiting for a dependency to finish updates-testing period). Use the RPMs from here instead: http://et.redhat.com/~rjones/febootstrap/files/ or use the febootstrap in F-11 or Rawhide. (ii) Unset CDPATH. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.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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any possible conflict between host and guest "VolGroup00" VGs?

by Robert P. J. Day

i'm perusing the section on "Accessing data on guest disk images" here: http://fedoraproject.org/wiki/Getting_started_with_virtualization#Accessi... and noticed that, because i accepted the default volume group name for both host and guest, both of them have a volume group name of "VolGroup00", which confused me for just a few seconds until i realized what was going on. but other than being confusing, is there any potential clash that could result from having the same volume group name in both cases? rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Annoying Kernel Pedantry. Web page: http://crashcourse.ca Linked In: http://www.linkedin.com/in/rpjday Twitter: http://twitter.com/rpjday ========================================================================

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what about adding extra pkgs to Virtualization yum group?

by Robert P. J. Day

currently: $ yum groupinfo Virtualization Loaded plugins: refresh-packagekit Setting up Group Process Group: Virtualization Description: These packages provide a virtualization environment. Mandatory Packages: python-virtinst Default Packages: qemu-kvm virt-manager virt-viewer Optional Packages: gnome-applet-vm virt-top but what about other useful virt packages that one might never even hear about, such as virt-ctrl virt-df virt-mem are any of these less useful than, say, virt-top? it might be useful to add all those extra packages into the "Optional" category, just so people will know they exist. rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Annoying Kernel Pedantry. Web page: http://crashcourse.ca Linked In: http://www.linkedin.com/in/rpjday Twitter: http://twitter.com/rpjday ========================================================================

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Re: [fedora-virt] ANNOUNCE: Augeas support added to libguestfs

by Richard W.M. Jones

On Tue, Apr 21, 2009 at 09:53:20AM +0200, Ján ONDREJ (SAL) wrote: > Another feature enhacement requirement: > > can you add an option "--kvm" to use qemu-kvm instead of qemu? It's much > faster (aprox 50%) on machines, which support hardware virtualization. > Also you need to remove --no-kqemu option, which is not recognized by > qemu-kvm. May be ability to run kvm may be autodetected in future, but I > think, if there is no kvm support, qemu-kvm will run in normal qemu mode. Yes, this needs to be sorted out. It should also be possible to choose which qemu/kvm/etc binary to run. I also discovered that the -no-kqemu switch doesn't exist at all on PPC, which is one of the reasons that it fails to run on that platform. There's another problem with PPC as well, qemu on PPC doesn't seem to support the -initrd option. As usual, since I don't have a PPC machine it's hard to debug this. Instead I hacked around it: http://git.et.redhat.com/?p=libguestfs.git;a=commitdiff;h=936108f54cbf8e8... Rich. -- 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

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Re: [fedora-virt] ANNOUNCE: Augeas support added to libguestfs

by Richard W.M. Jones

On Tue, Apr 21, 2009 at 10:12:53AM +0200, Ján ONDREJ (SAL) wrote: > Yeah, CDPATH problem fixed. :-)) > > Patch for febootstrap attached. Problem is, that you are using: > febootstrap-to-initramfs initramfs > $output-t > but this febootstrap-to-initramfs uses "cd" and displays current path before > showing real output. > > SAL > --- /usr/bin/febootstrap-to-initramfs 2009-04-12 11:17:41.000000000 +0200 > +++ febootstrap/febootstrap-to-initramfs 2009-04-21 10:00:31.000000000 +0200 > @@ -23,7 +23,7 @@ > exit 1 > fi > > -cd "$1" > +cd "$1" >/dev/null > > if [ ! -f fakeroot.log -a $(id -u) -ne 0 ]; then > echo "no fakeroot.log and not running as root" Thanks, applied. Rich. -- 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

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Re: [fedora-virt] ANNOUNCE: Augeas support added to libguestfs

by Richard W.M. Jones

Another quick experiment while I'm looking into this, try: febootstrap fedora-10 f10 and see if that can create a Fedora 10 distro under f10/ subdir. (Doesn't need to be root). Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.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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what exactly is "virt-viewer" supposed to do?

by Robert P. J. Day

having long ago gotten over my embarrassment at asking dumb questions, what can i get "virt-viewer" to do for me? i have a perfectly respectable guest system named "f1164", but nothing i do with "virt-viewer" will give me any useful info for that guest. can someone give me a sample invocation that will print something besides: syntax: virt-viewer [OPTIONS] DOMAIN-NAME|ID|UUID virt-viewer version 0.0.3 Options: -h, --help display command line help -v, --verbose display verbose information -V, --version display version information -d, --direct direct connection with no automatic tunnels -c URI, --connect URI connect to hypervisor URI -w, --wait wait for domain to start rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Annoying Kernel Pedantry. Web page: http://crashcourse.ca Linked In: http://www.linkedin.com/in/rpjday Twitter: http://twitter.com/rpjday ========================================================================

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reporting virtualization bugs

by Robert P. J. Day

some random thoughts, possibly related to this page: https://fedoraproject.org/wiki/Reporting_virtualization_bugs#Is_My_Guest_... 1) somewhere near the front, i might suggest running any or all of the following: $ lsmod | grep kvm $ ls -l /dev/kvm $ ls -l /sys/class/misc/kvm in case that needs to be reported. 2) would it be possible to have the actual, underlying qemu-related commands added to the guest log file? i recall watching the output of "ps -ef" when i was installing a guest once, and was curious about the lengthy invocation of qemu-kvm that was doing all of the work. having a record of that actual command would be spectacularly handy, as well as having any other initialization commands, like qemu-img. is any of that already stored somewhere? (it occurs to me that much of that might be in XML form and available with "virsh dumpxml Guest"). more later as it occurs to me. rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Annoying Kernel Pedantry. Web page: http://crashcourse.ca Linked In: http://www.linkedin.com/in/rpjday Twitter: http://twitter.com/rpjday ========================================================================

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Re: [fedora-virt] ANNOUNCE: Augeas support added to libguestfs

by Richard W.M. Jones

On Mon, Apr 20, 2009 at 08:16:32PM +0200, Ján ONDREJ (SAL) wrote: > make[2]: Entering directory `/home/ondrejj/c/CVS/libguestfs' > mv initramfs.fedora-10.i686.img initramfs.fedora-10.i686.img.bak > mv: nie je možné stat() `initramfs.fedora-10.i686.img': Adresár alebo súbor neexistuje > make[2]: [initramfs/fakeroot.log] Error 1 (ignored) > mv vmlinuz.fedora-10.i686 vmlinuz.fedora-10.i686.bak > mv: nie je možné stat() `vmlinuz.fedora-10.i686': Adresár alebo súbor neexistuje > make[2]: [initramfs/fakeroot.log] Error 1 (ignored) > if ! bash ./make-initramfs.sh; then rm -f initramfs/fakeroot.log; exit 1; fi > /usr/bin/fakeroot: line 89: [: /home/ondrejj/c/CVS/libguestfs/initramfs: binary operator expected > faked, daemon for fake root environment > Best used from the shell script `fakeroot' > options for fakeroot: --port, --foreground, --debug, --save-file, --load, --unknown-is-real > fakeroot: error while starting the `faked' daemon. > fakeroot: database file `/home/ondrejj/c/CVS/libguestfs/initramfs > /home/ondrejj/c/CVS/libguestfs/initramfs/fakeroot.log' does not exist. > /usr/bin/fakeroot: line 89: [: /home/ondrejj/c/CVS/libguestfs/initramfs: binary operator expected > faked, daemon for fake root environment > Best used from the shell script `fakeroot' > options for fakeroot: --port, --foreground, --debug, --save-file, --load, --unknown-is-real > fakeroot: error while starting the `faked' daemon. > find: `initramfs/lib/modules/*/kernel': Adresár alebo súbor neexistuje Not sure if this will help, but I wonder if you could try the same commands again with LANG=C, ie: LANG=C make clean LANG=C make Possibly I'm parsing output somewhere that depends on the locale. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.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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Re: [fedora-virt] ANNOUNCE: Augeas support added to libguestfs

by Richard W.M. Jones

On Mon, Apr 20, 2009 at 08:01:34PM +0200, Ján ONDREJ (SAL) wrote: > On Mon, Apr 20, 2009 at 06:59:50PM +0100, Richard W.M. Jones wrote: > > On Mon, Apr 20, 2009 at 07:55:56PM +0200, Ján ONDREJ (SAL) wrote: > > > I'm sorry, this is not a problem. But I don't know why, always 2 initramfs* > > > directories are created: > > > > > > drwxr-xr-x 3 ondrejj ondrejj 4096 Apr 20 19:52 initramfs/ > > > drwxr-xr-x 3 ondrejj ondrejj 4096 Apr 20 19:52 initramfs?/ > > > > > > Then fakeroot fails. > > > > What versions of fakeroot, Fedora, febootstrap etc are you using? > > I think these suggested by you: > > [ondrejj@work libguestfs]$ rpm -q fakeroot febootstrap fedora-release > fakeroot-1.11-19.fc10.i386 Since it looks like a problem with fakeroot, do you think you could try this with the version from Rawhide? This should work: yum --enablerepo=rawhide install fakeroot\* Rich. -- 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

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virt April 2009