xen April 2008

xen@lists.fedoraproject.org

32 participants
31 discussions

Fedora9 and HP ML350
by Alroger L. Gomes F. 11 Apr '08

11 Apr '08

Hello everyone. I've just installed Fedora9, on a HP Proliant Server ML350 with SmartArray E200i (cciss driver), hoping to use the latest Xen features. When I boot into the kernel-xen, it gets up to the following line and reboots itself in an endless loop. XEN is relinquishing VGA console It does not generate any output on /var/log/messages nor /var/log/xen/*. Any ideas? -- Alroger Luiz Gomes Filho SDEV - Smart Developments http://www.sdev.com http://cafe-ti.blog.br So little time, so many systems . . .

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Testing xen installs with a new kernel
by Mark McLoughlin 10 Apr '08

10 Apr '08

Hey, Fedora 9 is frozen right now, so as we continue getting kernel-xen into shape, we need to be able to test installs with new kernel builds before requesting that the build gets tagged. Here's some instructions for anyone who needs to do this: 1) Checkout anaconda from git[1]: $> git-clone git://git.fedorahosted.org/anaconda.git 2) Pull down the latest installer images: $> d=$(date +%F) $> mkdir $d $> pushd $d $> wget http://download.fedora.redhat.com/pub/fedora/linux/development/${arch}/os/i… $> wget http://download.fedora.redhat.com/pub/fedora/linux/development/${arch}/os/i… $> popd 3) Create the new images $> anaconda/scripts/upd-kernel $d $d-$kver ./kernel-xen-$kver.rpm $> cat > $d-$kver <<EOF [general] family = Fedora arch = ${arch} [images-xen] kernel = vmlinuz initrd = initrd.img EOF 4) Kick off an install: $> virt-install ... -l ./$d-$kver ... -x "method=http://mymirror/foobar/${arch}/os/" Cheers, Mark. [1] - You'll also need these patches which hopefully will be applied soon: http://www.redhat.com/archives/anaconda-devel-list/2008-April/thread.html#0…

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xen installation
by swethu bandaru 10 Apr '08

10 Apr '08

I am new to xen and I don,t know anything about it Plz, any one can tell me all the steps in how to install guest O.S through Xen plzzzzzzzzzzzzzzzzzzzzz Thank you __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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RE: Newby Help
by Walter Coole 09 Apr '08

09 Apr '08

With a lot of help and trying things without much of a clue, I think I've gotten virt-install to create a machine image, but that machine boots into an Anaconda session that hangs. The error says: Unable to read package metadata. This may be due to a missing repodata directory. Please ensure that your install tree has been correctly generated. Cannot open/read repomd.xml file for repository: anaconda-base-200610172015.x86_64 Can anyone tell me where this repomd.xml file is supposed to be? Or a way to validate my install tree? Or a better way to build an install tree than turning wget loose on download.fedora.redhat.com/pub/fedora/linux/core/6/x86_64 ? I've gone through a couple of sets of instructions that have failed for me in a variety of ways that I don't seem to be able to cope with. Since someone seems to be able to use Xen, I'm apparently doing something clueless that isn't covered by those instructions. If someone can provide some guidance, I'd be happy to start over from scratch. Extremely grateful for any hints, Walter

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Newby Help
by Walter Coole 08 Apr '08

08 Apr '08

I'm having trouble getting Xen up on Fedora 6. Following the instructions at http://fedoraproject.org/wiki/FedoraXenQuickstartFC6 , I've got xend running, but haven't gotten a viable image running. I tried (per the above) virt-manager. I guessed that http://download.fedora.redhat.com/pub/fedora/linux/core/6/x86_64/os/ was a suitable install tree, but when the installer (Anaconda, I guess) gets to some point (it varies with each attempt) it stalls, sometimes complaining about not getting a file. I also tried xm, but haven't figured out how to deal with the error: Cannot open root device "sda1" Virsh throws a different error: Domain not found: xenUnifiedDomainLookupByName I'm befuddled by having tried several different sources, each of which said "it's soooo easy", but failing to provide sufficient information to get me past these issues, so I'd be grateful if someone could point me to instructions geared to the meanest understanding. Walter

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Accessing other terminals
by Gerrard Geldenhuis 04 Apr '08

04 Apr '08

Hi How do I access other terminals during a kickstart installation? I am using virsh to create the xen domain. Regards

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root element in config file
by Gerrard Geldenhuis 03 Apr '08

03 Apr '08

Hi I am trying to put together a working xml file to create a new domain.... The root element is baffling me a bit. from the http://libvirt.org/ website root: the root filesystem from the guest viewpoint, it may be passed as part of the cmdline content too My current value is <root>/dev/xvd</root> but that was automatically created by satellite which I am trying to adapt for my own use. When I do a virsh create config file I get the following error: libvir: Xen Daemon error : POST operation failed: (xend.err "Error creating domain: (2, 'Invalid kernel', 'xc_dom_parse_elf_kernel: ELF image has no shstrtab\\n')") If someone would'nt mind explaing a bit more what this root file system is... Regards

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RE: [Fedora-xen] Possible Stupid Question...
by Dustin Henning 02 Apr '08

02 Apr '08

David, This is probably a "something stupid" related to Linux more than Xen. It sounds like the system isn't booting at all, and the most likely cause is that the drivers necessary for the SAS are not in the kernel. Linux picks appropriate drivers for the machine you install on and then all updates use those drivers, so when you move to new hardware, it just doesn't work. If you copy the kernel and modules from the working machine to the machine that didn't work when you did your dd_rescue, it might boot with them, however, when it comes time to update, you will need to manually compile your new kernels instead of using the standard automated update method, i.e. do the standard update, ut then do a custom compile and boot to the custom kernel, not the one from the standard update, as it ill crash, but the custom compiled one will be compatible with the other changes made by the automatic update. This is far from detailed and complete, as it has been a while since I have dealt with that kind of thing, but I most often experienced it switching from "Compatibility Mode" SATA to AHCI on some machines that I didn't want to rebuild. I n your case, a rebuild on the problem machine is probably a better option, as you can then migrate whatever you want however you want to a clean machine with no thorn in its side. Dustin From: fedora-xen-bounces(a)redhat.com [mailto:fedora-xen-bounces@redhat.com] On Behalf Of David Levinger Sent: Tuesday, April 01, 2008 20:57 To: fedora-xen(a)redhat.com Subject: [Fedora-xen] Possible Stupid Question... Hey guys, Been loving Xen and playing around with it for awhile now but recently tried something new and had a really weird result, not sure if it is at all related to Xen so I'm gonna ask here. 1. I have a SATA based Xen x64 machine running a para-virtualized x64 VM, that VM is written out to an LVM Partition. /dev/vgmachine/lvVM 2. I shut down that VM and then dd_rescue it over to another machine. (With the same LVM setup) 3. The other machine is running the same exact host OS but has SAS based IO instead of SATA. 4. When I bring up the Xen machine on the SAS host the whole computer gets hosed. I see SAS controller errors and I have to hard power the machine. I'm building a new Xen machine on the SAS host now and it doesn't seem to be causing trouble, did I do something stupid in assuming that I could move a Para-virtualized machine from one type of IO to another? David

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iwlwifi with 2.6.21-7.fc7xen
by Tomáš Kouba 02 Apr '08

02 Apr '08

Hello, is anybody on this mailing list using iwlwifi driver with fedora and xen kernel? I have downloaded sources, untarred but it doesn't compile with error: include/asm/fixmap.h: At top level: include/asm/fixmap.h:110: error: expected declaration specifiers or ‘...’ before ‘maddr_t’ In file included from include/asm/elf.h:52, from include/linux/elf.h:7, from include/linux/module.h:15, from /root/iwlwifi/iwlwifi-1.2.25/compatible/iwl3945-base.c:31: The problem is this line: extern void __set_fixmap(enum fixed_addresses idx, maddr_t phys, pgprot_t flags); I am not very sure what gcc complains about maddr_t. Thanks for any help. -- Tomas Kouba

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Problem with XEN
by swethu bandaru 01 Apr '08

01 Apr '08

Respected Sir, When we are trying to install a guest os by using xen in fedora6 I am using virt-install command and i have specified the following What is the name of the VM ?guest1 How much RAM should be allocated in MB ? 200 What would you like to use as the diskpath ? /home/xenbox.img What is the install location ?nfs:192.168.5.47:/home/fc6 In /home/fc6 folder we have the fc6 installation docs. when i used xm list command we have found the guest os guest1 and its permission as -b----- when we have given xm create -c guest1 then we got the errors UNABLE TO READ FILE SYSTEM BOOTLOADER DIDN.T RETURN ANY DATA please help me with this problem Thank you! --------------------------------- Like movies? Here's a limited-time offer: Blockbuster Total Access for one month at no cost.

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xen April 2008