Easy with virt-customize. In this example I’m adding the nosmt option to the command line:
$ virt-customize -a rhel7.img \
--edit '/etc/default/grub:
s/^GRUB_CMDLINE_LINUX="/GRUB_CMDLINE_LINUX="nosmt /' \
--run-command 'grub2-mkconfig -o /boot/grub2/grub.cfg'
Filed under Uncategorized
CentOS 7.3 was announced today, and the x86_64 version is available in virt-builder already:
$ virt-builder centos-7.3
Filed under Uncategorized
CentOS 7.2 is out. New in this release, you can simply install virt-v2v and all the dependencies (including libguestfs-winsupport!) are included*.
* = except for libguestfs-xfs which you might also need for converting RHEL 7 guests.
# yum install virt-v2v
Dependencies Resolved
================================================================================
Package Arch Version Repository
Size
================================================================================
Installing:
virt-v2v x86_64 1:1.28.1-1.55.el7.centos base 12 M
Installing for dependencies:
attr x86_64 2.4.46-12.el7 base 66 k
augeas-libs x86_64 1.4.0-2.el7 base 355 k
boost-system x86_64 1.53.0-25.el7 base 39 k
boost-thread x86_64 1.53.0-25.el7 base 57 k
bridge-utils x86_64 1.5-9.el7 base 32 k
bzip2 x86_64 1.0.6-13.el7 base 52 k
celt051 x86_64 0.5.1.3-8.el7 base 53 k
cryptsetup x86_64 1.6.7-1.el7 base 119 k
cyrus-sasl x86_64 2.1.26-19.2.el7 base 88 k
cyrus-sasl-md5 x86_64 2.1.26-19.2.el7 base 56 k
device-mapper-event x86_64 7:1.02.107-5.el7 base 167 k
device-mapper-event-libs x86_64 7:1.02.107-5.el7 base 169 k
device-mapper-persistent-data x86_64 0.5.5-1.el7 base 350 k
dosfstools x86_64 3.0.20-9.el7 base 101 k
flac-libs x86_64 1.3.0-5.el7_1 base 169 k
fuse x86_64 2.9.2-6.el7 base 84 k
fuse-libs x86_64 2.9.2-6.el7 base 93 k
gdisk x86_64 0.8.6-5.el7 base 187 k
genisoimage x86_64 1.1.11-23.el7 base 298 k
glusterfs x86_64 3.7.1-16.el7 base 422 k
glusterfs-api x86_64 3.7.1-16.el7 base 60 k
glusterfs-client-xlators x86_64 3.7.1-16.el7 base 732 k
glusterfs-libs x86_64 3.7.1-16.el7 base 321 k
gnutls-dane x86_64 3.3.8-12.el7_1.1 base 32 k
gnutls-utils x86_64 3.3.8-12.el7_1.1 base 228 k
gperftools-libs x86_64 2.4-7.el7 base 272 k
gsm x86_64 1.0.13-11.el7 base 30 k
gtk2 x86_64 2.24.28-8.el7 base 3.4 M
hexedit x86_64 1.2.13-5.el7 base 39 k
hivex x86_64 1.3.10-5.7.el7 base 100 k
icoutils x86_64 0.31.0-3.el7 base 82 k
ipxe-roms-qemu noarch 20130517-7.gitc4bce43.el7 base 559 k
iscsi-initiator-utils x86_64 6.2.0.873-32.el7 base 418 k
iscsi-initiator-utils-iscsiuio x86_64 6.2.0.873-32.el7 base 81 k
ldns x86_64 1.6.16-7.el7 base 473 k
libaio x86_64 0.3.109-13.el7 base 24 k
libasyncns x86_64 0.8-7.el7 base 26 k
libcgroup x86_64 0.41-8.el7 base 64 k
libconfig x86_64 1.4.9-5.el7 base 59 k
libguestfs x86_64 1:1.28.1-1.55.el7.centos base 1.7 M
libguestfs-tools-c x86_64 1:1.28.1-1.55.el7.centos base 2.2 M
libguestfs-winsupport x86_64 7.2-1.el7 base 2.1 M
libibverbs x86_64 1.1.8-8.el7 base 56 k
libicu x86_64 50.1.2-15.el7 base 6.9 M
libiscsi x86_64 1.9.0-6.el7 base 60 k
libogg x86_64 2:1.3.0-7.el7 base 24 k
libosinfo x86_64 0.2.12-3.el7 base 256 k
librados2 x86_64 1:0.80.7-3.el7 base 1.5 M
librbd1 x86_64 1:0.80.7-3.el7 base 350 k
librdmacm x86_64 1.0.21-1.el7 base 64 k
libreport-filesystem x86_64 2.1.11-32.el7.centos base 37 k
libseccomp x86_64 2.2.1-1.el7 base 49 k
libsndfile x86_64 1.0.25-10.el7 base 149 k
libunwind x86_64 1.1-5.el7 base 56 k
libusal x86_64 1.1.11-23.el7 base 135 k
libvirt-client x86_64 1.2.17-13.el7_2.2 updates 4.3 M
libvirt-daemon x86_64 1.2.17-13.el7_2.2 updates 584 k
libvirt-daemon-driver-interface x86_64 1.2.17-13.el7_2.2 updates 161 k
libvirt-daemon-driver-network x86_64 1.2.17-13.el7_2.2 updates 301 k
libvirt-daemon-driver-nodedev x86_64 1.2.17-13.el7_2.2 updates 160 k
libvirt-daemon-driver-nwfilter x86_64 1.2.17-13.el7_2.2 updates 184 k
libvirt-daemon-driver-qemu x86_64 1.2.17-13.el7_2.2 updates 569 k
libvirt-daemon-driver-secret x86_64 1.2.17-13.el7_2.2 updates 154 k
libvirt-daemon-driver-storage x86_64 1.2.17-13.el7_2.2 updates 327 k
libvirt-daemon-kvm x86_64 1.2.17-13.el7_2.2 updates 117 k
libvorbis x86_64 1:1.3.3-8.el7 base 204 k
libxslt x86_64 1.1.28-5.el7 base 242 k
lsof x86_64 4.87-4.el7 base 331 k
lvm2 x86_64 7:2.02.130-5.el7 base 1.0 M
lvm2-libs x86_64 7:2.02.130-5.el7 base 872 k
lzop x86_64 1.03-10.el7 base 54 k
mailcap noarch 2.1.41-2.el7 base 31 k
make x86_64 1:3.82-21.el7 base 420 k
mdadm x86_64 3.3.2-7.el7 base 393 k
mtools x86_64 4.0.18-5.el7 base 203 k
netcf-libs x86_64 0.2.8-1.el7 base 69 k
netpbm x86_64 10.61.02-9.el7 base 180 k
netpbm-progs x86_64 10.61.02-9.el7 base 1.9 M
nmap-ncat x86_64 2:6.40-7.el7 base 201 k
numad x86_64 0.5-14.20140620git.el7 base 34 k
openssl x86_64 1:1.0.1e-51.el7_2.1 updates 711 k
perl-Business-ISBN noarch 2.06-2.el7 base 25 k
perl-Business-ISBN-Data noarch 20120719.001-2.el7 base 24 k
perl-Compress-Raw-Bzip2 x86_64 2.061-3.el7 base 32 k
perl-Compress-Raw-Zlib x86_64 1:2.061-4.el7 base 57 k
perl-Digest noarch 1.17-245.el7 base 23 k
perl-Digest-MD5 x86_64 2.52-3.el7 base 30 k
perl-Encode-Locale noarch 1.03-5.el7 base 16 k
perl-File-Listing noarch 6.04-7.el7 base 13 k
perl-HTML-Parser x86_64 3.71-4.el7 base 115 k
perl-HTML-Tagset noarch 3.20-15.el7 base 18 k
perl-HTTP-Cookies noarch 6.01-5.el7 base 26 k
perl-HTTP-Daemon noarch 6.01-5.el7 base 20 k
perl-HTTP-Date noarch 6.02-8.el7 base 14 k
perl-HTTP-Message noarch 6.06-6.el7 base 82 k
perl-HTTP-Negotiate noarch 6.01-5.el7 base 17 k
perl-IO-Compress noarch 2.061-2.el7 base 260 k
perl-IO-HTML noarch 1.00-2.el7 base 23 k
perl-IO-Socket-IP noarch 0.21-4.el7 base 35 k
perl-IO-Socket-SSL noarch 1.94-3.el7 base 113 k
perl-LWP-MediaTypes noarch 6.02-2.el7 base 24 k
perl-Net-HTTP noarch 6.06-2.el7 base 29 k
perl-Net-LibIDN x86_64 0.12-15.el7 base 28 k
perl-Net-SSLeay x86_64 1.55-3.el7 base 285 k
perl-TimeDate noarch 1:2.30-2.el7 base 52 k
perl-URI noarch 1.60-9.el7 base 106 k
perl-WWW-RobotRules noarch 6.02-5.el7 base 18 k
perl-hivex x86_64 1.3.10-5.7.el7 base 41 k
perl-libwww-perl noarch 6.05-2.el7 base 205 k
pulseaudio-libs x86_64 6.0-7.el7 base 576 k
python-chardet noarch 2.2.1-1.el7_1 base 227 k
python-kitchen noarch 1.1.1-5.el7 base 267 k
qemu-img x86_64 10:1.5.3-105.el7_2.1 updates 657 k
qemu-kvm x86_64 10:1.5.3-105.el7_2.1 updates 1.8 M
qemu-kvm-common x86_64 10:1.5.3-105.el7_2.1 updates 390 k
radvd x86_64 1.9.2-9.el7 base 85 k
rsyslog-mmjsonparse x86_64 7.4.7-12.el7 base 29 k
scrub x86_64 2.5.2-5.el7 base 40 k
seabios-bin noarch 1.7.5-11.el7 base 74 k
seavgabios-bin noarch 1.7.5-11.el7 base 32 k
sgabios-bin noarch 1:0.20110622svn-4.el7 base 7.1 k
spice-server x86_64 0.12.4-15.el7 base 380 k
supermin5 x86_64 5.1.10-1.2.el7 base 574 k
syslinux x86_64 4.05-12.el7 base 990 k
syslinux-extlinux x86_64 4.05-12.el7 base 363 k
unbound-libs x86_64 1.4.20-26.el7 base 296 k
unzip x86_64 6.0-15.el7 base 166 k
usbredir x86_64 0.6-7.el7 base 44 k
yajl x86_64 2.0.4-4.el7 base 39 k
yum-utils noarch 1.1.31-34.el7 base 113 k
Transaction Summary
================================================================================
Install 1 Package (+130 Dependent packages)
Total download size: 59 M
Installed size: 172 M
Filed under Uncategorized
Three people have asked me about this, so here goes. You will need a RHEL or CentOS 7.1 machine (perhaps a VM), and you may need to grab extra packages from this preview repository. The preview repo will go away when we release 7.2, but then again 7.2 should contain all the packages you need.
You’ll need to install rpm-build. You could also install mock (from EPEL), but in fact you don’t need mock to build libguestfs and it may be easier and faster without.
Please don’t build libguestfs as root. It’s not necessary to build (any) packages as root, and can even be dangerous.
Grab the source RPM. The latest at time of writing is libguestfs-1.28.1-1.55.el7.src.rpm. When 7.2 comes out, you’ll be able to get the source RPM using this command:
yumdownloader --source libguestfs
I find it helpful to build RPMs in my home directory, and also to disable the libguestfs tests. To do that, I have a ~/.rpmmacros file that contains:
%_topdir %(echo $HOME)/rpmbuild %_smp_mflags -j5 %libguestfs_runtests 0
You may wish to adjust %_smp_mflags. A good value to choose is 1 + the number of cores on your machine.
I’ll assume at this point that the reason you want to rebuild libguestfs is to apply a patch (otherwise why aren’t you using the binaries we supply?), so first let’s unpack the source tree. Note I am running this command as non-root:
rpm -i libguestfs-1.28.1-1.55.el7.src.rpm
If you set up ~/.rpmmacros as above then the sources should be unpacked under ~/rpmbuild/SPECS and ~/rpmbuild/SOURCES.
Take a look at least at the libguestfs.spec file. You may wish to modify it now to add any patches you need (add the patch files to the SOURCES/ subdirectory). You might also want to modify the Release: tag so that your package doesn’t conflict with the official package.
You might also need to install build dependencies. This command should be run as root since it needs to install packages, and also note that you may need packages from the repo linked above.
yum-builddep libguestfs.spec
Now you can rebuild libguestfs (non-root!):
rpmbuild -ba libguestfs.spec
With the tests disabled, on decent hardware, that should take about 10 minutes.
The final binary packages will end up in ~/rpmbuild/RPMS/ and can be installed as normal:
yum localupdate x86_64/*.rpm noarch/*.rpm
You might see errors during the build phase. If they aren’t fatal, you can ignore them, but if the build fails then post the complete log to our mailing list (you don’t need to subscribe) so we can help you out.
Filed under Uncategorized
Although there are no cloud images available right now, I have put up a virt-builder image, so you can install CentOS 7 right now just by doing:
$ virt-builder centos-7.0
Filed under Uncategorized
The Youtube playlist is here. (Sorry, these have been up for a couple of months, but I only spotted them now).
Filed under Uncategorized
http://catn.com/2013/07/11/centos-dojo-live-blog/
The CentOS event which I’m talking at is being live streamed from the link above.
Filed under Uncategorized
At the CentOS Dojo in Aldershot, on Friday 12th July. Tickets are £15 per person (don’t worry, that’s not just for me, there are lots of other speakers!), and there’s beer and pig roast in the evening included in the price.
Ask me anything you want about virtualization. I might even be able to answer.
Filed under Uncategorized
It looks like I might be doing a short talk at the CentOS Dojo and Barbecue at Aldershot, UK, Friday 12th July 2013.
It’ll probably be about scripting/programming libvirt and the virt tools, but mainly it’ll be a chance for Q&A about any virtualization topic in RHEL / CentOS.
Also they have a BBQ — with beer! Sadly since I’m driving there I won’t be able to drink any of the beer.
(Thanks Karanbir Singh, Justin Clift)
Filed under Uncategorized
Richard WM Jones 