xen February 2007

xen@lists.fedoraproject.org

72 participants
85 discussions

Win Xp 64 bit install
by Abhishek Gaurav 07 Mar '07

07 Mar '07

Hi, I am trying to install windows xp 64 bit (trial version) using virt-install on a fc6 system. The installation seems to stall when the message in the vnc console says "Setup is starting windows". The xm dmesg shows: (XEN) (GUEST: 13) Booting from CD-Rom... (XEN) (GUEST: 13) unsupported PCI BIOS function 0x0E (XEN) (GUEST: 13) int13_harddisk: function 15, unmapped device for ELDL=81 (XEN) (GUEST: 13) *** int 15h function AX=E980, BX=00F2 not yet supported! (XEN) (GUEST: 13) *** int 15h function AX=EC00, BX=0002 not yet supported! (XEN) Trying to set reserved bit in EFER: 4d01 The last message "Trying to set ... " actually comes up just before it stalls. What might be causing this ? I have also tried to install an older Win Xp home sp1, which actually goes past the above messages (without "trying to set ...") but ends up in the famous black screen upon first reboot. It'll be great to know what might be causing the above problems. Thanks, Abhishek.

3 2

initscripts, xen and bonding
by Axel Thimm 04 Mar '07

04 Mar '07

Hi, I'm having a hard time getting bonding to work on FC5t3. It looks like the bond0 interface bond0 is renamed to pbond0 by xen [*] and the enslaving does not work anymore then. It works if I log on the terminal and ifenslave the devices to pbond0 instead of bond0 after the boot process has finished. But I want this to be handled automatically during reboots, so I tried assigning the bonding slaves to pbond0 as a master in the ifcfg-eth{0,1} scripts, but that doesn't work. What is causing the bond0 rename and should this renaming be considered by initscript? Is this a user error or should I file this against bugzilla? xen or initscripts? Thanks! [*] The only reference I found was a Japanese site and google's translation of it. http://translate.google.com/translate?hl=en&sl=ja&u=http://hoop.euqset.org/… -- Axel.Thimm at ATrpms.net

3 8

Re: [Fedora-xen] xen in fc6
by Adrian Revill 01 Mar '07

01 Mar '07

Hi Henk, For the NFS problem, have you tried testing the nfs mount by mounting it back on Dom0 When i first set mine up i logged in as root on Dom0, created a dir called testmnt then mounted the nfs on it. In your case #mount 192.168.0.1:/fc_5 testmnt You should then see all of the install tree under testmnt The other thing, is look in /var/log/messages on Dom0, you should see the mount attempt from your DomU I also run with no firewall, is yours on? is it blocking the mounts? You other problem The startup works ok until the following error: "error: failed to retrieve FC_5/Fedora/base/stage2.img" I guess the file is actually there? try extracting it from CD again, maybe its corrupt. regards Adrian

2 1

Live Virtual Machine Migration with XEN in Fedora Core 6
by taoj2＠cs.rpi.edu 28 Feb '07

28 Feb '07

Hi, I wanna do some experiments of Live VM Migration with XEN in Fedora Core 6. Is there anybody know whether the XEN in Fedora Core support live migration or not? Thanks. Regards, Angel

2 1

NAT Problem
by Jim Klein 28 Feb '07

28 Feb '07

This may not be specifically a xen problem, but I am having an issue with running a xen vm as a NAT gateway. Basically, the situation is this: Dom0 is set up with 2 bridged ports, xenbr0 and xenbr1. xenbr0 is on the public network and xenbr1 is on the private (10.x.x.x). DomU #1 is setup as a router using both interfaces, eth0 public (xenbr0) and eth1 private (xenbr1) with NAT via iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE. Now, if I bring up another DomU (#2) on the same box with only 1 interface (eth0) on xenbr0, it is completely inaccessible by machines routing through DomU #1. However, ssh into DomU#1, then ssh into DomU#2 from the DomU#1 console works. Further, if I migrate DomU#2 to another box, it is suddenly accessible to machined routing through DomU#1. Thanks in advance for any help.

1 0

Problem about installing guesting OS with virt-manger of Fedora Core 6
by taoj2＠cs.rpi.edu 28 Feb '07

28 Feb '07

Hi, Thank you guys a lot. This time I didn't create the file manually. Just Let the virt-manager to do this. First, I try to use /home/jane/xen/box1, but it failed. So according to Dan's suggestion, I use /var/lib/xen/images/box1 as the storage location of guest OS. But why this file has to be under /var/lib/xen/images rather than /home? I didn't realize this problem when I was intalling the guesting OS before. Only /var/lib/xen/images is a valid directoy? Is there any other valid directory? And I found another problem even if I use /var/lib/xen/images/box1 : "The partition table on device xvda was unreachable. To create new partitions it must be initialized, causing the loss of All Data on this drive. This opeartion will override any previous installation choices about which drives to ignore. Would you like to initialize this drive, erasing ALL DATA? " So this means each time I want to install an guest OS, I have to create new partition? It seems not good. :( And I don't know how to solve this problem. This is the first time I use Fedora Core and XEN. I want to do some experiments about the VM migration with XEN. Do you guys have any idea of above problem? Thanks a lot. Regads, Angel

2 1

iSCSI root
by Adrian Revill 28 Feb '07

28 Feb '07

Hi Has anyone had any luck using iSCSI as the root device for a DomU. Is it possible to specify the target address in the virt-manager directly? as i have seen comments on google that it has to be mounted on Dom0 first. Which kinda defeats the object of virtual storage for virtual machines. If i was doing a straight FC6 install i could select an iSCSI target as the target drive. regards Adrian

3 2

Re: [Fedora-xen] Problem about installing guesting OS with, virt-manger of Fedora Core 6
by Adrian Revill 28 Feb '07

28 Feb '07

Hi Angel If i understand you, you are trying to use file backed storage in /home/jane/xen/box1 Try deleting the file /home/jane/xen/box1 and if it exists the file /etc/xen/box1 Then in the virt_manager enter the file name /home/jane/xen/box1 The file will be created and correctly formatted etc. regards Adrian

1 0

Problem about installing guesting OS with virt-manger of Fedora Core 6
by taoj2＠cs.rpi.edu 28 Feb '07

28 Feb '07

Hi, I installed the Fedora Core 6 on my computer. Now I was trying to install the Fedora Core 6 guesting OS in my computer. I use the Virtual Machine Manager to do this. First, I create an empty file, box1, like this: cat > box1 I didn't type anthing into the file. SO the file is empty. (Is this a correct approach to create a file for the guesting OS storage space ?) Then I set the /home/jane/xen/box1 as the storage space to install my guesting OS. I chose Fedora COre 6 again as my guest os. The problem is: When the installation comes to selecting disk partition part, there is no available drive there. I print the screen and attached the picture. I get stucked there and can't continue the guest os installation. COuld you please give me some hint? THank you very much. Regards, Angel

2 1

XEN, FC6 - two networkbridges, problems with ssh
by Abri Nation 28 Feb '07

28 Feb '07

Hi @all, i got two networkdevices (eth0, eth1), and i want to use the eth1 for DMZ and eth0 for "normal" internetaccess, so i have to build to bridges. on default FC6 created this bridge and "brctl show" shows the following conifgured bridge: ----------------------------------------------------------------------------------------------- bridge name bridge id STP enabled interfaces xenbr1 8000.024103917534 no vif49.0 tap0 vif45.0 tap1 peth1 vif0.1 ----------------------------------------------------------------------------------------------- that bridge (xenbr1) i want to use know for DMZ. and the interface eth0 i want to create an new bridge for "normal" internetaccess, and my other VM. But if i will configure this, it will not longer be possible to connect to the XEN server with ssh (cause now, i could only connect the xen server on the eth0 interface with ssh. eth1 is not reachabel per ssh, cause of the bridging). My Questions are: 1. How could i build two bridges, one for DMZ and one for "normal" internetaccess, having acces per ssh? 2. Is this default that the bridge interface is not longer available for ssh? i thought in bridging interfaces, the IP is copied from the interface to an virtual interface (e.g. peth1), so it is possible to conntact the physical interface also? 3. using FC6 with virt-manager - where can i change the bridge or build a new one? only on the command line? (with the network.bridge script oder with "brctl"?) Could anyone tell me my failure, or the mistake on my part? Thank you very much for help! kind regards, Abri

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xen February 2007