VM HD not detaching from host during conversion about ovirt_simple_backup

[zipurman]

On the Xen source VM, do you get any errors if you try to manually disconnect the storage using XenCenter?

[pslaw]

Just attempted and it detaches successfully with Xencenter. Are there logs in the app I can examine? Thank you for this tool, it is really needed in the community.

[zipurman]

Try shutting down the XenServer Source VM prior to running the migration. It is possible that Xen isnt shutting down the VM quickly enough and something is stopping the disconnecting of the disks. Let me know if that changes anything.

You could check the XEN logs on your XenHost as that is where the requests are sent. The request will be for a "vbd-destroy" as the VBD is the binding of the disk to the VM.

Happy to contribute :)

[pslaw]

That did it!. Converted. However, now I'm getting a Dracut emergency shell. I am testing the conversion on a CentOS 7 VM. Not sure if thats the reason why

/dev/cl/root does not exist
/dev/cl/swap does not exist
/dev/mapper/cl-root does not exist

[zipurman]

You used CentOS as your OS for the VM doing the cloning? If so, that is untested as CentOS/RHEL do some things differently.

If the VM for cloning was Debian and you were cloning a Xen-CentOS-VM that has Emerg.Shell then let me know and I will try to replicate.

[pslaw]

Both BackupEngine and VM Migration servers are Debian 9.4. I am attempting to clone a Xen-CentOS VM.

Thanks again for all the help.

[zipurman]

No problem.

Let me know exactly what specs you have on your CentOS VM and I will install a new VM on my systems and see if I have similar issue..

EXACT CentOS Version, 64bit?, RAM, CPU, Disk(s), Type of Disk(s), etc.

[pslaw]

Minimum Install CD - CentOS 7.4
CentOS Linux release 7.4.1708 (Core) 64bIT
2 Cores
4GB Memory
40GB Base Volume

[zipurman]

What did you setup for partitions/swap?

[pslaw]

I use the "Entire disk option" which it then creates the LVM.

[zipurman]

Found some new issues in the Xen migration part that I need to fix. I hope to have resolved in the next day or so.

[zipurman]

You should be able to fix your CentOS import by doing the following on the new CentOS VM in oVirt:

1. Shutdown the VM
2. Edit the VM and set the boot to 1.CD Rom 2.HDD and then attach the Boot ISO to the CDRom for CentOS7
3. Boot the VM and select the Toubleshooting - Rescue - and then option 1
4. On command line type:

chroot /mnt/sysimage
cd /boot
dracut -f
grub2-mkconfig -o /boot/grub2/grub.cfg
exit
shutdown 0 -h

5. Edit the VM again and remove the boot CD and return the boot options to normal, save.
6. VM should now boot.

I am trying to get this process automated, but doing this from Debian to CentOS on the fly is not so easy ;)