Tag Archives: centos

CentOS 7.3 available in virt-builder

CentOS 7.3 was announced today, and the x86_64 version is available in virt-builder already:

$ virt-builder centos-7.3

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CentOS 7.2, with added virt-v2v

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
 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             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          base    418 k
 iscsi-initiator-utils-iscsiuio  x86_64          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

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How to rebuild libguestfs from source on RHEL or CentOS 7

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.


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CentOS 7

CentOS 7 is out.

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

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CentOS Dojo videos online

The Youtube playlist is here. (Sorry, these have been up for a couple of months, but I only spotted them now).


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CatN | CentOS Dojo


The CentOS event which I’m talking at is being live streamed from the link above.

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Reminder: I’m speaking next week

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.

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