Re: [Xen-users] nOOb to convert vmware guest to xen??

["Brian" <brian@xxxxxxxxxx>]

mount -o loop /var/xen/domains/xen_compat/xen_compatible.img
/var/xen/domains/mnt
mount: you must specify the filesystem type

xenhost xen # fdisk -lu /var/xen/domains/xen_compat/xen_compatible.img
You must set cylinders.
You can do this from the extra functions menu.

Disk /var/xen/domains/xen_compat/xen_compatible.img: 0 MB, 0 bytes
255 heads, 63 sectors/track, 0 cylinders, total 0 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x000be14d

                                         Device Boot      Start        
End      Blocks   Id  System
/var/xen/domains/xen_compat/xen_compatible.img1   *          63   
15952544     7976241   83  Linux
/var/xen/domains/xen_compat/xen_compatible.img2        15952545   
16771859      409657+   5  Extended
Partition 2 has different physical/logical endings:
     phys=(1023, 254, 63) logical=(1043, 254, 63)
/var/xen/domains/xen_compat/xen_compatible.img5        15952608   
16771859      409626   82  Linux swap / Solaris

Need an offset - 63x512=32,256

mount -o loop,offset=32256 /var/xen/domains/xen_compat/xen_compatible.img
/var/xen/domains/mnt

cat /var/xen/domains/mnt/etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
/dev/sda1       /               ext3    errors=remount-ro 0       1
/dev/sda5       none            swap    sw              0       0
/dev/hda        /media/cdrom0   udf,iso9660 user,noauto     0       0
/dev/fd0        /media/floppy0  auto    rw,user,noauto  0       0
# Beginning of the block added by the VMware software
.host:/                 /mnt/hgfs               vmhgfs  defaults,ttl=5    
0 0
# End of the block added by the VMware software

/etc/xen/xen_compat.cfg:

root        = '/dev/sda1 ro'
disk        = [
                'file:/var/xen/domains/xen_compat/xen_compatible.img,sda1,w'
              ]

xm create -c xen_compat.cfg

Begin: Waiting for root file system ...

Same thing.

<sigh>



> Brian,
>
> Please try mounting the xen.img file using a command like this.
>
> mount -o loop /xen-images/guest_base.img /xen-images/mnt
> *
> *
> *then in /xen-images/mnt/etc/fstab you may be able to see the disk names.*
> *
> *
> *Then give the right disk partition name*
> *
> *
> *for the *
> *
> *
> *root= '/dev/xxxxx ro'*
> *disk= ''file:/var/xen/domains/xen_compat/xen_compatible.img,xxxxx,w'*
> *
> *
> This should work.
>
>
> On Thu, Feb 25, 2010 at 11:01 PM, Brian <brian@xxxxxxxxxx> wrote:
>
>> Had the vmware guest split into 2G chunks, converted to single growable,
>> verified bootable and network connectivity under VMWare. This is a good
>> vmdk. Here is the /etc/fstab of the VM:
>>
>> /dev/sda1       /               ext3    errors=remount-ro 0       1
>> /dev/sda5       none            swap    sw                0       0
>>
>> Next:
>> vmware-vdiskmanager -r vmware_image.vmdk -t 0 temporary_image.vmdk
>> (doubt
>> this really needed to be done as I already converted to single growable)
>> qemu-img convert -f vmdk temporary_image.vmdk -O raw xen_compatible.img
>>
>> Copied a swap.img from another xen vm to /var/xen/domains/xen_compat/.
>>
>> /etc/xen/xen_compat.cfg:
>>
>> root        = '/dev/xvda2 ro'
>> disk        = [
>>                'file:/var/xen/domains/xen_compat/swap.img,sda1,w',
>>                'file:/var/xen/domains/xen_compat/xen_compatible.img,sda5,w'
>>              ]
>>
>
> You have mismatch above in disk name and root.
>
>
>
>>
>> also tried (copied from a working xen vm)
>>
>> root        = '/dev/xvda2 ro'
>> disk        = [
>>                'file:/var/xen/domains/xen_compat/swap.img,xvda1,w',
>>
>>  'file:/var/xen/domains/xen_compat/xen_compatible.img,xvda2,w'
>>              ]
>>
>>
> Here the disk name in fstab and root/disk variables do not match.
>
>
>> xm create -c xen_compat.cfg results:
>>
>> Begin: Waiting for root file system ...
>>
>> Have no idea how to pass single to a non-bootable xen VM.
>>
>> Where does "mount -o remount,rw /" go, surely not in a non-bootable VM
>> /etc/fstab?
>>
>> "edit /etc/fstab sdb to hda or whatever as in xen.cfg." I created my
>> xen_compat.cfg by hand, no instructions for migrated VMs.
>>
>> Thanks again for any insight.
>>
>> > Brian,
>> >
>> > For me the following steps worked.
>> >
>> > vmware-vdiskmanager -r vmware_image.vmdk -t 0 temporary_image.vmdk
>> qemu-img convert -f vmdk temporary_image.vmdk -O raw xen_compatible.img
>> >
>> > Then using this disk I could boot the guest in which I could login as
>> root
>> > in single user mode
>> >
>> > mount -o remount,rw /
>> >
>> > edit /etc/fstab sdb to hda or whatever as in xen.cfg.
>> >
>> > Can you please post your /etc/fstab file in your vmware guest and the
>> xen
>> > cfg file.
>> >
>> > Are you reaching to a point where you are able to login in a single
>> user
>> mode into the converted xen guest at all?
>> >
>> > Thanks
>> > Ramachandran
>> >
>> >
>>
>
> I think if you do the following steps you will have a working setup:
>
> 1. Convert the disks from vmdk to xen using the commands in earlier mail
> for
> each of the disks.
> 2. Mount the image file which had root file system and check the
> /etc/fstab
> 3. Give the correct device names for root and disk variables in xen config
> as in fstab. (In disk variable specify both image files with their right
> name as in fstab).
>
> Thanks
> Ramachandran
>
>
>
>> > On Tue, Feb 23, 2010 at 10:34 PM, Brian <brian@xxxxxxxxxx> wrote:
>> >
>> >> I got into the original VMWare guest and found sda1 as / and sda5 as
>> swap,
>> >> changed the disk lines in the .cfg, or did I not understand correctly
>> as
>> >> I
>> >> haven't read this anywhere?
>> >> Am I supposed to create a "blank" xen disk and dd the converted
>> vmware
>> file to the blank??????
>> >> Some official docs would sure be nice if htere's more than the few
>> lines
>> >> in the wiki.
>> >> This is about a deal-breaker ;~(
>> >> > Brian,
>> >> >
>> >> > I guess you may be missing a step of  renaming the device.
>> >> > Check if your /etc/fstab and rename sda or sdb etc to hda etc as
>> the
>> >> case
>> >> > may be in xen vm config file.
>> >> >
>> >> > Thanks
>> >> > Ramachandran
>> >> >
>> >> > On Fri, Feb 19, 2010 at 11:58 PM, Brian <brian@xxxxxxxxxx> wrote:
>> >> >
>> >> >> Yep, read that one too ;~)>
>> >> >>
>> >> >> This is a debian vm.
>> >> >>
>> >> >> The new disk.img shows to be raw.
>> >> >>
>> >> >> Not sure where to go from here, thought it would just work.
>> >> >>
>> >> >>
>> >> >> > check this
>> >> >> >
>> http://ian.blenke.com/vmware/vmdk/xen/hvm/qemu/vmware_to_xen_hvm.html
>> >> >> >
>> >> >> > On Fri, Feb 19, 2010 at 12:53 PM, Brian <brian@xxxxxxxxxx>
>> wrote:
>> >> >> >
>> >> >> >> So I tried this:
>> >> >> >>
>> >> >> >> http://wiki.xensource.com/xenwiki/VMDKImage
>> >> >> >>
>> >> >> >> And get this:
>> >> >> >>
>> >> >> >> <bunch of stuff>
>> >> >> >> Begin: Waiting for root file system ...
>> >> >> >>
>> >> >> >> What am I missing, where are some docs?
>> >> >> >>
>> >> >> >> TIA
>> >> >> >>
>> >> >> >>
>> >> >> >> --
>> >> >> >> This message has been scanned for viruses and
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>> >> >> >>
>> >> >> >>
>> >> >> >> _______________________________________________
>> >> >> >> Xen-users mailing list
>> >> >> >> Xen-users@xxxxxxxxxxxxxxxxxxx
>> >> >> >> http://lists.xensource.com/xen-users
>> >> >> >>
>> >> >> >
>> >> >> > --
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>> >> >> >
>> >> >> >
>> >> >>
>> >> >>
>> >> >>
>> >> >> --
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>> >> >>
>> >> >>
>> >> >> _______________________________________________
>> >> >> Xen-users mailing list
>> >> >> Xen-users@xxxxxxxxxxxxxxxxxxx
>> >> >> http://lists.xensource.com/xen-users
>> >> >>
>> >> >
>> >> > --
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>> >> >
>> >> >
>> >> --
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>> >> _______________________________________________
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>> >
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>> >
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>>
>>
>>
>>
>>
>>
>>
>>
>>
>> --
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>> believed to be clean.
>>
>>
>> _______________________________________________
>> Xen-users mailing list
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>> http://lists.xensource.com/xen-users
>>
>
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>



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