similar to: Downgrading from Xen 4.6 to 4.5

> > working in 4.6 for some people, but is working in 4.5 > > How can I downgrade to Xen 4.5 so I can test this out? > > Many thanks > > We do not provide a CentOS-7 version of Xen lower than 4.6. At the > time > we started Xen support on CentOS-7, 4.6 was already stable and that > was > our first release for CentOS-7. > > We do currently have both

On 08/03/2016 05:35 AM, Francis Greaves wrote: > Dear All > I have an up to date CentOS 7 with Xen 4.6 > I have noticed in some posts here and there that PCI Passthrough is not > working in 4.6 for some people, but is working in 4.5 > How can I downgrade to Xen 4.5 so I can test this out? > Many thanks We do not provide a CentOS-7 version of Xen lower than 4.6. At the time we

Dear All I am using Centos 7 with Xen 4.6 on a Dell Poweredge T430 When the machine boots, after the 'Scrubbing Free RAM' message, I get a screen filled with little white squares until the login prompt, so I cannot see what is happening as the machine boots. Also there is nothing on the screen when I reboot. My /etc/default/grub is GRUB_DISTRIBUTOR="$(sed 's, release

Yes I usually work headless, but I have been setting it up from new, so need to see what is going on. Regards Francis From: "Scot P. Floess" <sfloess at nc.rr.com> To: "Francis Greaves" <francis at choughs.net> Cc: "centos-virt" <centos-virt at centos.org> Sent: Monday, 22 February, 2016 17:02:12 Subject: Re: [CentOS-virt] Garbled screen

Dear George, Thanks for the input and ideas. Unfortunately bootscrub=false dos not work, not does setting nothing for vga, still get the 'Little white squares'! I am asking the xen-users as you suggest Regards, Francis From: "George Dunlap" <dunlapg at umich.edu> To: "Francis Greaves" <francis at choughs.net>, "centos-virt" <centos-virt

>On Mon, May 16, 2016 at 12:00 PM, Francis Greaves <francis at choughs.net> wrote: >> Dear George please find attached the three files as requested. >> I have used >> >> iommu=soft >> >> in the grub command line for the kernel in the domU as explained before. >> many thanks >The options are: >1. Figure out what the other device is and

I am running Xen 4.6 on CentOS 7 in a Dell Poweredge T430 I need PCI Passthrough to get USB working. I am following the Xenproject Wiki I have enabled the Virtulasation in the BIOS. I have xen_pciback as a module I have issued the command: xl pci-assignable-add 00:1a0.0 and it shows up fine when I issue this xl pci-assignable-list I have pci=['00:1a.0'] on the DomU config file I

Further to my last post, I have removed the xen-pciback module from the Dom0 kernel, and reloaded it as modprobe xen-pciback passthrough=1 I now have the PCI device on the DomU matching the Dom0 Device usb usb1: SerialNumber: 0000:00:1a.0 instead of 0000:00:00.0 However I now have this error ehci_hcd 0000:00:1a.0: Unlink after no-IRQ? Controller is probably using the wrong IRQ. does

Further to my messages back in May I have at last got round to trying to get my DomU to recognise USB devices. I am using Xen 4.6 with CentOS kernel 3.18.34-20.el7.x86_64. I have to manually make the port available before creating the DomU by issuing the command: xl pci-assignable-add 00:1a.0 otherwise nothing shows in: xl pci-assignable-list I have added this to my .cfg file as per the

Dear George please find attached the three files as requested. I have used iommu=soft in the grub command line for the kernel in the domU as explained before. many thanks Francis From: "George Dunlap" <dunlapg at umich.edu> To: "francis" <francis at choughs.net>, "centos-virt" <centos-virt at centos.org> Sent: Monday, 16 May, 2016 10:29:09

I am using Xen 4.6.0-8.el7 on CentOS 7 with 3 Linux DomUs. I did have Xen 4.? on CentOS 6.5 on my previous system. I installed using yum install centos-release-xen. On shutting down the Hypervisor it used to wait for the DomUs to shut down gracefully (one can take a minute or more), then on starting up again it would restart the DomUs, all nice and controlled. For some reason the DomUs (CentOS

Francis, I just rebooted my Precision 470 and watched...nothing :( I see the boot menu, and then everything goes blank - as in just a blinking cursor until I get the login prompt. No idea what it's doing - but I don't even see the scrubbing free memory output... On Mon, 22 Feb 2016, Francis Greaves wrote: > Yes I usually work headless, but I have been setting it up from new, so

I am running XEN on CentOS Linux release 7.8.2003 I have a Debian 7, and two Gentoo DomU Guests running fine. I am trying to get an Ubuntu 20.04 DomU Guest running but I get this error when trying to run the netboot kernel image xc_dom_probe_bzimage_kernel unable to LZ4 decompress kernel I understand that CentOS Xen does not support LZ4 decompression. Is there a workaround for this?

On Wed, Jun 22, 2016 at 11:49 AM, Francis Greaves <francis at choughs.net> wrote: > More information... > I have pcifront showing as a module in the DomU and the usb shows in dmesg > as: > [ 3.167543] usbcore: registered new interface driver usbfs > [ 3.167563] usbcore: registered new interface driver hub > [ 3.167585] usbcore: registered new device driver usb >

From: "Francis Greaves" <francis at choughs.net> To: "Francis Greaves" <francis at choughs.net>, "centos-virt" <centos-virt at centos.org> Sent: Sunday, 3 July, 2016 11:19:49 Subject: Re: [CentOS-virt] PCI Passthrough not working Further to my last post, I have removed the xen-pciback module from the Dom0 kernel, and reloaded it as modprobe

Dear all, I have ended up in a situation where CentOS 5.0 does not work for me - is it feasible to downgrade from 5.0 to 4.6 while the servers are up, or would the most sensible option be to just reinstall from scratch? Thanks in advance + best regards Jan

After the large update from 7.2 -> 7.3 there is one major problem, the amanda backup packages. Strange situation, the host is the amanda server is working fine at backing up all my remote clients. But it has an error backing up itself. The amanda packages did not change version (3.3.3) and I've done no configuration change. I'm not looking for help debugging this at the moment.

Dear All I am running CentOS 7 with Xen 4.6 I see 4.7 is out now, and want to upgrade to see if the USB Passthrough will work. I have not been able to get it to work in 4.6 What is the best way to upgrade. I am using the centos-release-xen at the moment. Regards Francis

Hi, I'm using sid, and this morning I carelessly upgraded R core packages, which are currently at the beta 3.0.0 version. I hadn't read that packages need to be re-built to be used with this beta version. I'd happily do that locally (via 'install.packages') for those that haven't yet been re-built in Debian, but some just don't allow that, notably nlme which has a

On Mon, Feb 22, 2016 at 4:18 PM, Francis Greaves <francis at choughs.net> wrote: > Dear All > I am using Centos 7 with Xen 4.6 on a Dell Poweredge T430 > When the machine boots, after the 'Scrubbing Free RAM' message, I get a > screen filled with little white squares until the login prompt, so I cannot > see what is happening as the machine boots. Also there is nothing