boot failed: not a bootable disk

[spoonman]

Hi I am doing a migration from a physical server with debian etch 32bit to proxmox kvm
I ran this command on the physical server:

dd if=/dev/md0 | ssh root@192.168.2.190 dd of=/var/lib/vz/images/100/vm-100-disk-1.raw

and in Proxmox I can manually mount the drive and see the contents with this command:
mount-t ext3-o loop vm-100-disk-1.raw mnt/

but when I try to start the virtual machine I get this error:
boot failed: not a bootable disk

I can't understand...
I tried using virtio, ide, scsi and setting the boot order

 

[dietmar]

Please try to use 'writeback' cache mode for the KVM disk. Does that help?

 

[spoonman]

Please try to use 'writeback' cache mode for the KVM disk. Does that help?

I tried with writeback cache mode but I have the same error.

 

[dietmar]

And /dev/md0 contains a MBR?

 

[dietmar]

Note: if you can mount it directly, it is likely that it does not contain a MBR

 

[udo]

Hi I am doing a migration from a physical server with debian etch 32bit to proxmox kvm
I ran this command on the physical server:

dd if=/dev/md0 | ssh root@192.168.2.190 dd of=/var/lib/vz/images/100/vm-100-disk-1.raw

and in Proxmox I can manually mount the drive and see the contents with this command:
mount-t ext3-o loop vm-100-disk-1.raw mnt/

but when I try to start the virtual machine I get this error:
boot failed: not a bootable disk

I can't understand...
I tried using virtio, ide, scsi and setting the boot order

Hi,
you only copy the root-partition (software-raid md0)?! - so your VM-hdd miss the MBR/Partitiontable...

You can copy sda (if your softwareraid is an raid1 between sdaX and sdbX) and change adfter that inside the VM the root-partiton from md0 to sda1 (or sda2 or vdaX).
If your softwareraid is an raid5, you must copy the content to the right partiton.

Udo

 

[spoonman]

Hi,
you only copy the root-partition (software-raid md0)?! - so your VM-hdd miss the MBR/Partitiontable...

You can copy sda (if your softwareraid is an raid1 between sdaX and sdbX) and change adfter that inside the VM the root-partiton from md0 to sda1 (or sda2 or vdaX).
If your softwareraid is an raid5, you must copy the content to the right partiton.

Udo

It is a software raid 1; As suggested I tried using dd ​​with the partition sda1 but got the same error.

After that I tried to install on a virtual machine the same version of debian and then I added as a secondary drive the raw image of the real system.
If a tried to view partition with
fdisk /dev/sdb
I got:
Device contains neither a valid DOS partition table, nor Sun, SGI, or OSF disklabel ...

I can mount from proxmox the same raw file with mount -t ext3 -o loop

it seems that the format is not recognized by kvm

Perhaps the problem is that it is the image of a single partition and is not the image of an entire disk ?

 

[dietmar]

Perhaps the problem is that it is the image of a single partition and is not the image of an entire disk ?

Yes, you need the image of a whole disk, including a Master Boot Sector.

 

[tom]

why don´t you just use clonezilla for cloning? will prevent a lot of problems.

 

[spoonman]

Hi,
you only copy the root-partition (software-raid md0)?! - so your VM-hdd miss the MBR/Partitiontable...

You can copy sda (if your softwareraid is an raid1 between sdaX and sdbX) and change adfter that inside the VM the root-partiton from md0 to sda1 (or sda2 or vdaX).
If your softwareraid is an raid5, you must copy the content to the right partiton.

Udo

Thank you, It is a software raid 1
I tried to copy the partition sda1 and got the same error.
I did this test:
- I took the raw files generated, I tried to mount it with mount-t ext3-o loop ... in proxmox and see the contents
- I created a virtual machine with the same version of linux machine that I want to clone, and I added the raw files generated as secondary.
I can not even see the partition content with fdisk, I got this error

Device contains naither a valid DOS partition table, nor Sun, SGI or OSF disklabel...

 

[spoonman]

I have not used Clonezilla because I would have liked to migrate only the data of the primary partition.

At the end I solved by using the command
dd if = / dev / sda | ssh root@192.168.2.190 dd of = / var/lib/vz/images/100/vm-100-disk-1.raw
copying the entire disk as suggested

Thanks
Fabio