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1608 discussions

/var/lib/xenstored & Xen4CentOS
by Sarah Newman 04 Jun '15

04 Jun '15

By default, /var/lib/xenstored is mounted tmpfs in centos 5 but this doesn't appear to be true for Xen4CentOS. This can cause performance issues as mentioned in https://bugzilla.redhat.com/show_bug.cgi?id=446089 I'm not sure if this should be part of xencommons, but if not, adding a tmpfs mount should probably be documented on the quick start wiki page. Thanks, Sarah

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Kubernetes 0.18. in virt7-testing
by Navid Shaikh 04 Jun '15

04 Jun '15

Hi, kubernetes-0.18.0-0.2.git5520386.el7 is in virt7-testing repo [1]. Please test and feedback. [1] http://cbs.centos.org/repos/virt7-testing/x86_64/os/Packages/ -- Navid Shaikh IRC: nshaikh

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New xen-4.4.2-3 packages released
by Johnny Hughes 02 Jun '15

02 Jun '15

All, There are new xen packages released based on the new xen-4.4.2-3.el6.src.rpm package. This has the following changes: ========================= * Mon Jun 01 2015 George Dunlap <george.dunlap(a)eu.citrix.com> - 4.4.2-3.el6.centos - Import XSA-128,129.130,131 ========================= It has been uploaded to our master server, will be available in 30 minutes to mirror.centos.org and within 24 hours to external mirror servers on mirrorlist.centos.org. Thanks, Johnny Hughes

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Won't attend to next Virt SIG meeting
by Sandro Bonazzola 28 May '15

28 May '15

Hi, I won't be able to attend to next week meeting. oVirt updates are: - 3.5.3 RC2 rpms for the Hypervisor Node are available for testing, info on http://wiki.centos.org/HowTos/oVirt - initial draft of the centos-kvm-release and centos-ovirt-release rpms is under review at https://gerrit.ovirt.org/41403 ; missing public key for rpm gpg-check to be added there. - Need to figure out which kind of automated tests we can add to ci.centos.org on the packages entering testing phase. -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

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Kubernetes 0.17.1 in virt7-testing
by Navid Shaikh 28 May '15

28 May '15

Hi, kubernetes-0.17.1-3 is in virt7-testing repo [1]. Please test and feedback. [1] http://cbs.centos.org/repos/virt7-testing/x86_64/os/Packages/ -- Navid Shaikh IRC: nshaikh

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Flannel 0.2 in virt7-testing
by Navid Shaikh 27 May '15

27 May '15

Hi, flannel-0.2.0-7.el7 is in virt7-testing repo [1]. Please test and feedback. [1] http://cbs.centos.org/repos/virt7-testing/x86_64/os/Packages/ -- Navid IRC: nshaikh

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Bridge Networking for Xen in Box proposal
by Gautam Malu 26 May '15

26 May '15

Hi, I am doing xen in box gsoc project. The aim of the project is to have custom installer ISO which delivers xen stack running on c7 along with necessary bridge networking configuration. But I am getting confused over how to package bridge networking settings, so that I can deliver that during installation itself. I can use bridge-utils and package ifcfg-* files as differnet package. But for that I need to have the network information like how many NIC are present in the system, and which NIC is active is it eth0 or wlan0. I can probably write a script to set up bridge networking, which can be used to start bridge networking and stop, and ship that script as a package. Any suggestions? Best regards, Gautam Malu

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Re: [CentOS-virt] xl stack problems on CentOS6 XEN4
by Hildebrand, Nils (BIT II 9) 20 May '15

20 May '15

Hi George, I already outlined the drbd-stuff on xen-users (see attachement). Yes - elrepo is right on mark. Excerpt: "The script (/etc/xen/scripts/block-drbd) I am using is from drbd84-utils-8.9.2-1.el6.elrepo.x86_64 - and already seems to contain the "drbd or phy" case; both in the add and the remove branch. CentOS6 XEN4 is based on the Kernel 3.10.68-11.el6.centos.alt.x86_64 which has drbd 8.4.3 built in." Excurse: As for SLES 11 there are two possibilities: a) official: Buy the HAE license (quite expensive). There is a drbd-stack built into it (based on drbd 8.4) b) inofficial: Compile your own drbd-srpm. That will contain the needed block-drbd as well, as part of the drbd-xen rpm. Back to my problem: Your patch does not fit my sources: http://vault.centos.org/6.6/xen4/Source/SPackages/ I am currently on XEN 4.4.2-2 - your patch is for 4.5? Can you please backport your patch to 4.4.2-2? Kind regards Nils -----Ursprüngliche Nachricht----- Von: George Dunlap [mailto:george.dunlap@eu.citrix.com] Gesendet: Montag, 18. Mai 2015 18:47 An: Hildebrand, Nils (BIT II 9); centos-virt(a)centos.org Betreff: Re: xl stack problems on CentOS6 XEN4 [Switching to CentOS-virt, as I think that's probably actually a more appropriate venue] On 05/11/2015 02:52 PM, Hildebrand, Nils (BIT II 9) wrote: > I am currently in the process of replacing my SLES11 SP3 Dom0s with CentOS6 XEN4 (at the moment: proof of concept with a test-cluster). > > I want to use the new xl-stack, instead of the old xm-stack, too. > > So far I stumbled across a number of minor glitches which could be worked around, I got DomUs with CentOS6 and CentOS 5 PV up and running with drbd-disk-backend (primary/secondary mode). > > But now I am stuck at the problem that pygrub does not seem to know about drbd-devices. I've never used drbd myself, but poking around a little bit, it seems that the SLES has drbd pacakages, one of which includes block scripts for Xen (drbd-xen). Looking at CentOS 6, I don't immediately see any drbd packages. Are you using the packages from elrepo, perhaps? In particular, do you have the Xen block scripts in /etc/xen/scripts/block-drbd? -George

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Linux kernel 3.18.12 and libvirt 1.2.15 for Xen4CentOS in virt6-testing
by George Dunlap 19 May '15

19 May '15

Thanks to work from Johnny, linux 3.18.12 with all the x4c blktap goodness have been built and are now in the virt6-testing repo. I've also uploaded libvirt 1.2.15. As you may have seen earlier today, virt6-testing also includes an updated 4.4.2 package with the latest security update (XSA-133). The kernel has had some basic testing (by myself, Johnny, and another community member), but libvirt is at the moment untested, so caveat emptor. With such a large change, I want to leave both up for a few weeks before pushing them into the main repo. Please test them and report any errors you find. As a reminder, you can use the virt6-testing repo by putting the following file into /etc/yum.repos.d: [virt-testing] name=VirtSIG-\$releasever - Xen Testing baseurl=http://cbs.centos.org/repos/virt6-testing/\$basearch/os/ gpgcheck=0 enabled=0 For the adventurous, there are (as yet untested) kernel and xen packages in virt7-xen-44-candidate as well. I'll be pushing those to testing once I've actually had a chance to do set up my testing environment. Peace, -George

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KVM and USB
by ToddAndMargo 14 May '15

14 May '15

Hi All, On KVM, is there a way to pass USB Flash drives automatically to the guest without having to go into virt-manager and selecting the specific USB device? -T -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Computers are like air conditioners. They malfunction when you open windows ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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