Re: [CentOS] Xen Install manager won't let me install anything.
On Thu, May 05, 2011 at 04:53:22PM -0400, Martes G Wigglesworth wrote: > > On 05/05/2011 09:09 AM, Pasi Kärkkäinen wrote: > > It sounds like your hardware does not have HVM support, > > which means you can only run PV VMs. > Thanks for the reply. > > You are correct. > > I have two P4 32-bit machines that I just picked up and wanted to use > them for testing until I can afford to upgrade to the 12-core > MB/Processors that I bought these 2u chassis into which I plan to install. > > I have never used xen, and it just seems kind of odd that you cannot > simply install from the hard drive, like on virtualbox. Anyhow, I could > only figure that was the outlying factor. > > I could not locate that aspect of the virt-manager docs, so I will check > again. > Not being able to install from ISO image as PV VM is a virt-manager limitation. (and partly centos/rhel distro limitation). > Anyhow, now I am fighting with SL-Linux's installation media for i386, > having the ability to be seen, and booted, but inside their own boot > menue, it forces you to re-verify that you have install media. (Even > though it is running from the media in the first place. Then Xen > magically can't see the iso that SL linux is running from.) > > Are there any good (I guess dated, now that everything is mulit-core) > docs on how to work with paravirtualization, since I have to deal with > this weird "network" install setup? It seems that I can put in the > explicit path to the local-disk-installed ISO image, but the second it > boots, nothing can be found, and it asks me to put in a url, etc... > RHEL/CentOS docs have examples... http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Virtualization/index.html cmdline virt-install example to install PV RHEL5/CentOS5: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Virtualization/chap-Virtualization-Guest_operating_system_installation_procedures.html#sect-Virtualization-Installing_Red_Hat_Enterprise_Linux_5_as_a_para_virtualized_guest Fedora can be installed as Xen PV VM in the same way.. just give fedora mirror URL instead of RHEL/CentOS mirror URL. > > I know this sounds incoherent, but I am burnt out from exams. > > Installation for PV (paravirtualized) VMs is only supported > > by using netinstall in virt-manager. > > > > HVM (fully virtualized) VMs can be installed from ISO image. > Thanks for the input, and would appreciate any further direction on > reading further on "real-world" installs, not the docs where they assume > you have a quad 12-core processor super server so "everything thing just > works in virtualmode... ) I guess this is more for virt-manager, but I > think you will understand what I mean if you check the doc site for virt > manager. They don't even mention that there is a limitation such as > what you have described, except to say "there is a limitation." > > Sorry for the ramble. Need more RedBull, or maybe not so much Lol.. > Hehe. You can also use other tools than virt-manager/virt-install to install VMs. - debootstrap to install Debian/Ubuntu VMs. - thirdparty "xen-tools" to install Debian/Ubuntu VMs. - febootstrap to install fedora. - various chroot tricks to install rpm-based distros. - Fedora native installer, by downloading the fedora installer pxeboot kernel + initrd and booting them as xen pv domU. - Debian/Ubuntu native installer, by downloading the debian 6.0 or ubuntu 10.04 installer netinstall kernel + initrd and booting them as xen pv domU. See the end of the tutorial for an example how to install ubuntu manually using the distro installer: http://wiki.xen.org/xenwiki/Fedora13Xen4Tutorial -- Pasi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Xen Install manager won't let me install anything.
On 05/05/2011 09:09 AM, Pasi Kärkkäinen wrote: > It sounds like your hardware does not have HVM support, > which means you can only run PV VMs. Thanks for the reply. You are correct. I have two P4 32-bit machines that I just picked up and wanted to use them for testing until I can afford to upgrade to the 12-core MB/Processors that I bought these 2u chassis into which I plan to install. I have never used xen, and it just seems kind of odd that you cannot simply install from the hard drive, like on virtualbox. Anyhow, I could only figure that was the outlying factor. I could not locate that aspect of the virt-manager docs, so I will check again. Anyhow, now I am fighting with SL-Linux's installation media for i386, having the ability to be seen, and booted, but inside their own boot menue, it forces you to re-verify that you have install media. (Even though it is running from the media in the first place. Then Xen magically can't see the iso that SL linux is running from.) Are there any good (I guess dated, now that everything is mulit-core) docs on how to work with paravirtualization, since I have to deal with this weird "network" install setup? It seems that I can put in the explicit path to the local-disk-installed ISO image, but the second it boots, nothing can be found, and it asks me to put in a url, etc... I know this sounds incoherent, but I am burnt out from exams. > Installation for PV (paravirtualized) VMs is only supported > by using netinstall in virt-manager. > > HVM (fully virtualized) VMs can be installed from ISO image. Thanks for the input, and would appreciate any further direction on reading further on "real-world" installs, not the docs where they assume you have a quad 12-core processor super server so "everything thing just works in virtualmode... ) I guess this is more for virt-manager, but I think you will understand what I mean if you check the doc site for virt manager. They don't even mention that there is a limitation such as what you have described, except to say "there is a limitation." Sorry for the ramble. Need more RedBull, or maybe not so much Lol.. -- Respectfully, Martes G Wigglesworth M. G. Wigglesworth Holdings, LLC www.mgwigglesworth.net ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Xen Install manager won't let me install anything.
On Thu, May 05, 2011 at 12:45:41AM -0400, Martes G Wigglesworth wrote: > > Greetings all. > > I am attempting to install dom-u guests on a vanilla install of Centos > 5.6. I am attempting to use the Xen Manager and it 1) won't let me > choose ANYTHING but network install, which is quite odd to say the > least, and 2) won't let my freebsd install iso complete. I am a novice > with Xen, however, it doesn't make sense even in the most minimally > supported system that it would default to a more complex install method > such as "network," or "PXE" why does the Centos install of Xen Manager > installation wizard force you to only choose network install? > It sounds like your hardware does not have HVM support, which means you can only run PV VMs. Installation for PV (paravirtualized) VMs is only supported by using netinstall in virt-manager. HVM (fully virtualized) VMs can be installed from ISO image. -- Pasi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Xen Install manager won't let me install anything.
Greetings all. I am attempting to install dom-u guests on a vanilla install of Centos 5.6. I am attempting to use the Xen Manager and it 1) won't let me choose ANYTHING but network install, which is quite odd to say the least, and 2) won't let my freebsd install iso complete. I am a novice with Xen, however, it doesn't make sense even in the most minimally supported system that it would default to a more complex install method such as "network," or "PXE" why does the Centos install of Xen Manager installation wizard force you to only choose network install? -- Respectfully, Martes G Wigglesworth M. G. Wigglesworth Holdings, LLC www.mgwigglesworth.net ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Xen Install
On Sat, 2008-03-29 at 13:21 +0100, Daniel de Kok wrote: > On Sat, Mar 29, 2008 at 4:36 AM, John <[EMAIL PROTECTED]> wrote: > > http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU In reading that > > How To, will using the GUI Configuration Tools create all the files need > > to run a "DomU". Will I have manual edit any configuration files? > > Yes, you can use virt-manager to do this. > > > Next question is the machine has 256MBs of ram and Dom0 uses about > > 225MBs of it. Is that a bit much? VmWare Server does not use that much > > ram. See #top BelowWith out running the Xen Kernel it has no where > > near the ram usage as with the Xen one. Is that expected? > > dom0 takes the memory it can use, but if you create a domU, Xen will > use "ballooning" to reduce the amount of memory allocated to dom0. You > can set the minimum of dom0 memory in /etc/xen/xend-config.sxp by > tweaking the dom0-min-mem option. > > Be aware that the hypervisor also takes a chunk of memory, so you may > want to add more memory to get a useful setup. > > Take care, > Daniel Thanks for the help on that Daniel. > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos -- ~/john OpenPGP Sig:BA91F079 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Xen Install
On Sat, Mar 29, 2008 at 4:36 AM, John <[EMAIL PROTECTED]> wrote: > http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU In reading that > How To, will using the GUI Configuration Tools create all the files need > to run a "DomU". Will I have manual edit any configuration files? Yes, you can use virt-manager to do this. > Next question is the machine has 256MBs of ram and Dom0 uses about > 225MBs of it. Is that a bit much? VmWare Server does not use that much > ram. See #top BelowWith out running the Xen Kernel it has no where > near the ram usage as with the Xen one. Is that expected? dom0 takes the memory it can use, but if you create a domU, Xen will use "ballooning" to reduce the amount of memory allocated to dom0. You can set the minimum of dom0 memory in /etc/xen/xend-config.sxp by tweaking the dom0-min-mem option. Be aware that the hypervisor also takes a chunk of memory, so you may want to add more memory to get a useful setup. Take care, Daniel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Xen Install
http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU In reading that How To, will using the GUI Configuration Tools create all the files need to run a "DomU". Will I have manual edit any configuration files? Next question is the machine has 256MBs of ram and Dom0 uses about 225MBs of it. Is that a bit much? VmWare Server does not use that much ram. See #top BelowWith out running the Xen Kernel it has no where near the ram usage as with the Xen one. Is that expected? top - 11:32:53 up 5:22, 1 user, load average: 0.00, 0.00, 0.00 Tasks: 101 total, 3 running, 96 sleeping, 1 stopped, 1 zombie Cpu(s): 2.0%us, 0.7%sy, 0.0%ni, 97.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem:231424k total, 228784k used, 2640k free,20636k buffers Swap: 524280k total, 16k used, 524264k free,99324k cached -- ~/john OpenPGP Sig:BA91F079 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
