Re: [Xen-devel] Re: XCP/XenServer Migration utility now available at xen.org

[Marco Sinhoreli <msinhore@gmail.com>]

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Hi David,

Could I migrate a Citrix XenServer VM to XCP as well?

Cheers,

2010/3/15 David Markey <admin@dmarkey.com>

> No im afraid not.
>
> YOU have to make these changes to menu.lst and fstab before migration.
>
> If your VMs are the exact same, this should be easily scripted. i.e.
>
> vmdisk="/dev/xen/vm1root"
>
> mount $vmdisk /mnt/tmp
>
> sed -i.bak -e 's/xvda1/xvda/g' -e  's/xvda2/xvdb/g' /mnt/tmp/etc/fstab
> /mnt/tmp/etc/fstab
>
> umount /mnt/tmp
>
>
>
>
>
>
> 2010/3/15 Martinx - ジェームズ <thiagocmartinsc@gmail.com>
>
>> So, your script can make a new partition scheme and a new fstab for my VMs
>> before stream it to the XenServer?
>> Because I have more than 100 VMs to copy!  :-/
>>
>>
>> 2010/3/15 David Markey <admin@dmarkey.com>
>>
>>> Wow, what a pain :)
>>>
>>>
>>>
>>> 2010/3/15 Martinx - ジェームズ <thiagocmartinsc@gmail.com>
>>>
>>>> Yeah! Sure!
>>>>
>>>>  Today I'm doing this work manually... I mean, to copy a VM from open
>>>> source Xen to the XenServer I do:
>>>>
>>>> 1- stop the VM on my debian dom0;
>>>> 2- mount its root file system under /mnt/source;
>>>> 3- export it via NFS;
>>>> 4- At the XenServer, I boot the sysrescuecd (a live system);
>>>> 5- fdisk the /dev/sda;
>>>> 6- create the LVM volumes;
>>>> 7- mount /dev/vg01/root under /mnt/target;
>>>> 8- mount /dev/sda1 under /mnt/target/boot;
>>>> 9- mount the debian dom0 nfs server under /mnt/source;
>>>> 10- cp /mnt/source/* /mnt/target/
>>>> 11- edit the /etc/fstab and the grub's menu;
>>>> 12- shutdown the VM;
>>>> 13- Convert it from HVM to PVM;
>>>> 14- start the VM;
>>>>
>>>>
>>>> Thanks,
>>>> Thiago
>>>>
>>>> 2010/3/15 David Markey <admin@dmarkey.com>
>>>>
>>>>> If you change xvda1 to xvda, change xvda2 to xvdb it will work fine.
>>>>>
>>>>> Change references in /boot/grub/menu.lst of xvda1 to xvda
>>>>>
>>>>> Change references in /etc/fstab of xvda1 to xvda, and xvda2 to xvdb.
>>>>>
>>>>>
>>>>> Understand?
>>>>>
>>>>>
>>>>> 2010/3/15 Martinx - ジェームズ <thiagocmartinsc@gmail.com>
>>>>>
>>>>>> Exactly!
>>>>>>
>>>>>>  The first one is for my domU hosted at my open source Xen (powered by
>>>>>> Debian), the second fstab, is the new one, used for my guests hosted at my
>>>>>> XenServers.
>>>>>>
>>>>>>
>>>>>> Thanks!
>>>>>> Thiago
>>>>>>
>>>>>> 2010/3/15 David Markey <admin@dmarkey.com>
>>>>>>
>>>>>>> I'm confused,
>>>>>>>
>>>>>>> You supply 2 fstabs there, one using LVM, one without. Which one is
>>>>>>> it?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> 2010/3/15 Martinx - ジェームズ <thiagocmartinsc@gmail.com>
>>>>>>>
>>>>>>> Hi David!
>>>>>>>>
>>>>>>>>  My Xen domU in my open source dom0 (Debian) have this configuration
>>>>>>>> file:
>>>>>>>>
>>>>>>>> ----
>>>>>>>> bootloader  = '/usr/bin/pygrub'
>>>>>>>> extra       = 'console=hvc0'
>>>>>>>> memory      = '64'
>>>>>>>> disk        = [
>>>>>>>>                   'phy:/dev/HyperVG01/guest01-root,xvda1,w',
>>>>>>>>                   'phy:/dev/HyperVG01/guest01-swap,xvda2,w',
>>>>>>>>               ]
>>>>>>>> name        = 'guest01'
>>>>>>>> vif         = [ 'mac=00:01:64:4b:0d:2e, vifname=guest01-eth0,
>>>>>>>> bridge=eth0' ]
>>>>>>>> on_poweroff = 'destroy'
>>>>>>>> on_reboot   = 'restart'
>>>>>>>> on_crash    = 'restart'
>>>>>>>> ----
>>>>>>>>
>>>>>>>>  My guest01 /etc/fstab file:
>>>>>>>>
>>>>>>>> proc            /proc           proc    defaults        0       0
>>>>>>>> /dev/xvda1      /               ext3    relatime,errors=remount-ro
>>>>>>>> 0       1
>>>>>>>> /dev/xvda2      none            swap    sw              0       0
>>>>>>>>
>>>>>>>>  BUT, this is for open source Xen domU, within the XenServer, the
>>>>>>>> guest01 should be:
>>>>>>>>
>>>>>>>> proc            /proc           proc    defaults        0       0
>>>>>>>> /dev/xvda1      /boot           ext2    defaults        0       2
>>>>>>>> /dev/mapper/vdwuaf1-root /               ext3    errors=remount-ro
>>>>>>>> 0       1
>>>>>>>> /dev/mapper/vdwuaf1-swap_1 none            swap    sw
>>>>>>>> 0       0
>>>>>>>>
>>>>>>>>  And the partition table of the guest01:
>>>>>>>>
>>>>>>>> guest01:~# fdisk -lu /dev/xvda
>>>>>>>>
>>>>>>>> Disk /dev/xvda: 8589 MB, 8589934592 bytes
>>>>>>>> 255 heads, 63 sectors/track, 1044 cylinders, total 16777216 sectors
>>>>>>>> Units = sectors of 1 * 512 = 512 bytes
>>>>>>>> Disk identifier: 0x0009c181
>>>>>>>>
>>>>>>>>     Device Boot      Start         End      Blocks   Id  System
>>>>>>>> /dev/xvda1   *          63      498014      248976   83  Linux
>>>>>>>> /dev/xvda2          498015    16771859     8136922+  8e  Linux LVM
>>>>>>>>
>>>>>>>>  You tool can recreate the partition scheme? Or it just copy the
>>>>>>>> domU as is?
>>>>>>>>  I have many others domU like this to copy...
>>>>>>>>
>>>>>>>> Thanks!
>>>>>>>> Thiago
>>>>>>>>
>>>>>>>> 2010/3/15 David Markey <admin@dmarkey.com>
>>>>>>>>
>>>>>>>> If anyone has feature requests, direct them here.
>>>>>>>>>
>>>>>>>>> The next feature i'll be working on is supporting kernels loaded
>>>>>>>>> from the Dom0. The kernel images will have to be copied to the XenServer/XCP
>>>>>>>>> Dom0.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> 2010/3/12 Martinx - ジェームズ <thiagocmartinsc@gmail.com>
>>>>>>>>>
>>>>>>>>>> Really COOL!!! I'm doing all this work manually until now!
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On 12 March 2010 15:33, David Markey <david.markey@citrix.com>wrote:
>>>>>>>>>>
>>>>>>>>>>> Hi all,
>>>>>>>>>>>
>>>>>>>>>>> A new python based migration utility for migrating your xend
>>>>>>>>>>> virtual machines to XCP  is now available at:
>>>>>>>>>>>
>>>>>>>>>>> http://www.xen.org/products/cloud_projects.html
>>>>>>>>>>>
>>>>>>>>>>> It can generate XVAs from your xend based HVM and paravirtualised
>>>>>>>>>>> virtual machines.
>>>>>>>>>>> It can also steam your VM directly to a XenServer/XCP host over
>>>>>>>>>>> HTTP or HTTPS.
>>>>>>>>>>>
>>>>>>>>>>> Please read the README for pointers and guidelines on how to
>>>>>>>>>>> prepare your VMs for migration to XCP. Most PV based virtual machines will
>>>>>>>>>>> need some preparation work.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Thanks to Stephen Spector and Dave Scott!
>>>>>>>>>>>
>>>>>>>>>>> Enjoy,
>>>>>>>>>>>
>>>>>>>>>>> David
>>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> Xen-users mailing list
>>>>>>>>>>> Xen-users@lists.xensource.com
>>>>>>>>>>> http://lists.xensource.com/xen-users
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> _______________________________________________
>>>>>>>>>> Xen-devel mailing list
>>>>>>>>>> Xen-devel@lists.xensource.com
>>>>>>>>>> http://lists.xensource.com/xen-devel
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>
>
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>


-- 
Marco Sinhoreli

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