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1608 discussions

Official AWS Centos AMI and new instance types
by Luis Fernando Alen 02 Dec '13

02 Dec '13

Hello, list. Yesterday I tried changing the instance type of my c1.medium instances on AWS to c3.large and I wasn't able to do so. It looks like the official Centos AMI on market place is still not ready for c3.large. This is the error message I received: "The instance configuration for this AWS Marketplace product is not supported. Please see http://aws.amazon.com/marketplace/pp?sku=7w73f3vx0zywcfq1izrshkpjl for more information about supported instance types, regions, and operating systems." c3.large provides a huge balance improvement when it comes to cost X benefits. This instance has almost the same price of the old c1.medium ($ 0.150 vs $ 0.145 / hourly) and has more CPU power and double memory (7 ECUs and 3.7G). Given that fact, I believe we'll have lots of people switching from c1.medium to c3.large soon and therefore it'd be wise to have the official AMI ready. Besides c3.large, Amazon has released several new instance types and according to their market place info, I believe that the official AMI is not ready for those as well. Is it possible to get it ready? Thank you.

1 1

Fwd: bnx2x driver in Xen4 kernel
by Dusty Mabe 02 Dec '13

02 Dec '13

Hi, After following the instructions here http://wiki.centos.org/HowTos/Xen/Xen4QuickStart and installing the kernel from Xen4 CentOS project (kernel-3.4.61-9.el6.centos.alt.x86_64) I can't use any networking because the firmware for my NIC is not available: Bringing up interface eth0.3: bnx2x 0000:02:00.0: firmware: requesting bnx2x/bnx2x-e1h-7.2.51.0.fw bnx2x: [bnx2x_init_firmware:11696(eth0)]Can't load firmware file bnx2x/bnx2x-e1h-7.2.51.0.fw bnx2x: [bnx2x_func_hw_init:5476(eth0)]Error loading firmware bnx2x: [bnx2x_nic_load:2118(eth0)]HW init failed, aborting This seems similar to http://bugs.centos.org/view.php?id=6513 . Is this a bug? Is this a known issue? Thanks, Dusty

4 10

Hot adding USB devices to guests at a fixed address
by Stephen Harris 27 Nov '13

27 Nov '13

I have a device I want a guest to see. I've configured the following: % cat /etc/libvirt/HotPlug/owon.xml <hostdev mode='subsystem' type='usb'> <source> <vendor id='0x5345'/> <product id='0x1234'/> </source> </hostdev> And then in udev: % cat /etc/udev/rules.d/90-owon.rules ACTION=="add", \ SUBSYSTEM=="usb", \ SYSFS{idVendor}=="5345", \ SYSFS{idProduct}=="1234", \ RUN+="/usr/bin/virsh attach-device XP_VM1 /etc/libvirt/HotPlug/owon.xml" ACTION=="remove", \ SUBSYSTEM=="usb", \ SYSFS{idVendor}=="5345", \ SYSFS{idProduct}=="1234", \ RUN+="/usr/bin/virsh detach-device XP_VM1 /etc/libvirt/HotPlug/owon.xml" Now this works; I plug the device in and the guest sees it. The problem is that, each time, it shows up at a different address on the guest's USB bus. And, Windows XP being Windows, this means it asks to load a device driver each and every time (I've never understood why Windows wants to load a new device driver just because you plug a device into a different port). Does anyone know of a way of adding a device so that it's at a known fixed address inside the guest? -- rgds Stephen

2 2

Cannot start CentOS after installing the latest Xen4 with kernel 3.10.20
by Токарев Вячеслав 27 Nov '13

27 Nov '13

Hello. I'm installing the latest version of XEN to CentOS 6.4 machine. XEN version: 4.2.3-25.el6.centos.alt kernel: 3.10.20-11.el6.centos.alt When I reboot, many messages appears on the screen, indication the loading of XEN and then.. just a black screen. Several days ago I successfully installed XEN on another machine, but that was XEN 4.2.3-23 and kernel 3.4.68-9. And now, after the new version is released, it stopped working.. Also if I try to load a new kernel without XEN - it works perfectly. Please help me find out what's wrong with the new XEN kernel and how to fix it. Thanks.

3 5

CPU and memory allocation
by Mohit 27 Nov '13

27 Nov '13

Hi, How does cpu and memory allocation works in KVM, If your total vm's on a certain hyp are alloted more RAM and CPU then total physically available CPU-Cores and RAM -- Ericsson Signature line *Mohit Kumar* * Back Office* Ericsson India Global Services Pvt. Ltd BUGS-GSC, Back Office A-8, Tower- A, 3rd Floor, Knowledge Boulevard, Sector-62, Noida, Uttar Pradesh-201301, India mohit.m.kumar(a)ericsson.com www.ericsson.com http://www.ericsson.com/current_campaign <http://www.ericsson.com/current_campaign> This Communication is Confidential. We only send and receive email on the basis of the terms set out at www.ericsson.com/email_disclaimer <http://www.ericsson.com/email_disclaimer>

1 0

Does official oVirt releases works under CentOS 6.x??
by C. L. Martinez 27 Nov '13

27 Nov '13

Hi all, I would like to install oVirt under centos 6.4 to manage my 5 kvm hosts (centos based also), but all info that I have found it is bit confused. Does official oVirt releases works under CentOS 6.x or not for the node and the management server?? Or only official release for CentOS is http://dev.centos.org/centos/6/ovirt/ (a really bit older)?? .. Thanks.

1 0

Re: [CentOS-virt] new-kernel-pkg needs to be made Xen-aware
by Nico Kadel-Garcia 25 Nov '13

25 Nov '13

And it would be nice if it could read your mind and give you a foot massage, too. Same thing happens if you install both java-1.6.0-openjdk and jdk-1.7.0 packages at the same time, the system guesses that whichever one you installed last should be default. Delete the non "kernel-xen" kernels, and you should be good to go. for future updates. On Sat, Nov 23, 2013 at 1:07 PM, Kenneth Porter <shiva(a)sewingwitch.com> wrote: > I ran "yum update" the other day on my dom0 and let it pull a new kernel. > The RPM install scriptlet runs /sbin/new-kernel-pkg (part of the grubby > package) to update grub.conf. It writes a new record to boot the Linux > kernel instead of Xen. It would be nice if it noticed that it was running > inside Xen and wrote a suitable record for that. > _______________________________________________ > CentOS-virt mailing list > CentOS-virt(a)centos.org > http://lists.centos.org/mailman/listinfo/centos-virt

2 1

new-kernel-pkg needs to be made Xen-aware
by Kenneth Porter 24 Nov '13

24 Nov '13

I ran "yum update" the other day on my dom0 and let it pull a new kernel. The RPM install scriptlet runs /sbin/new-kernel-pkg (part of the grubby package) to update grub.conf. It writes a new record to boot the Linux kernel instead of Xen. It would be nice if it noticed that it was running inside Xen and wrote a suitable record for that.

3 4

proper bridging technoque
by aurfalien 23 Nov '13

23 Nov '13

Hi, Wondering if this is the proper bridging technique to use for Centos6+KVM; http://wiki.centos.org/HowTos/KVM Before I embark on this again, I would like to do it by the book. Thanks in advance, - aurf

3 31

New 3.10.18 Kernel for Xen4 needs testing
by Johnny Hughes 13 Nov '13

13 Nov '13

For anyone who is using our Xen4CentOS6 repo, we have created a new kernel from the new LTS 3.10.x kernel tree (to upgrade the current 3.4.x xen kernel) that we hope to roll into the production repo. Please look here and test the kernel, libvirt, and xen files there: http://dev.centos.org/centos/6/xen-c6-RC1/ That repo should be able to be used for testing or it should be able to update a current xen4centos6 repo as well ... the packages are signed by the testing key and I am currently using them, but YMMV, so be careful. Please also provide feedback (both positive and negative) so we can move these into production. NOTE: after installing a new kernel, please run "/usr/bin/grub-bootxen.sh" ... OR ... manually edit your "/boot/grub/grub.conf" file to boot the new kernel on your dom0 machine. Thanks, Johnny Hughes

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