[libvirt-users] converted VMDK disk iamge and Virtio driver
I have a CentOS 5 VM in vmware I wanted to move to work on KVM/libvirt. I used qemu-img to convert it to a qcow2 image, loaded virt-manager and created a new VM pointed at that qcow2 image. The boot paniced when it tried to mount the root filesystem also complaining about not being able to remount the swap partition. I played around and was able to get it to boot by changing the Virtual disk bus to IDE from Virtio. Searched about Virtio and I got to http://wiki.libvirt.org/page/Virtio and ran the mkinitrd mentioned to force loading of the virtio_pci and virtio_blk drivers. But upon shutting down, configuring the bus back to Virtio and booting it panics in the exact same way. I tried again after adding virtio_blk into /etc/modprobe.conf as scsi_hostadapter and rerunning mkinitrd but it still fails. Any clues what I am missing? --------------------------------------------------------------- Paul Raines http://help.nmr.mgh.harvard.edu MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging 149 (2301) 13th Street Charlestown, MA 02129 USA The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
On 06/18/2014 02:23 PM, Paul Raines wrote:
I have a CentOS 5 VM in vmware I wanted to move to work on KVM/libvirt. I used qemu-img to convert it to a qcow2 image, loaded virt-manager and created a new VM pointed at that qcow2 image. The boot paniced when it tried to mount the root filesystem also complaining about not being able to remount the swap partition.
In general, converting a disk image from one hypervisor to another is not trivial, because of things such as missing drivers and different hardware being presented to the guest. The virt-v2v project exists to cover a lot of cases that you are probably overlooking in your manual attempt; I'd recommend trying that approach: http://libguestfs.org/virt-v2v/
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This disclaimer is unenforceable on a publicly-archived mailing list. You might want to consider using a personal email account rather than spamming the list with your employer's bogus legalese. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
virt-v2v is not an option for me as all I have are the VMDK images and don't have the VMware software to covert to OVA first. I really don't understand what is going wrong. I also found https://access.redhat.com/site/solutions/20511 and that still doesn't work. Both /etc/fstab and grub.conf refer to the LABEL and not any device name. In the boot process I see it explicitly says it is loading virtio_blk before the panic. So it is like that driver just doesn't see the disk. The host machine is a CentOS 6 box. Is it possible the virtio in the libvirt for CentOS/RHEL6 is not compatiable with the virtio_blk driver in CentOS/RHEL5? Either that, or something else getting loaded is causing interference? -- Paul Raines (http://help.nmr.mgh.harvard.edu) On Wed, 18 Jun 2014 4:49pm, Eric Blake wrote:
On 06/18/2014 02:23 PM, Paul Raines wrote:
I have a CentOS 5 VM in vmware I wanted to move to work on KVM/libvirt. I used qemu-img to convert it to a qcow2 image, loaded virt-manager and created a new VM pointed at that qcow2 image. The boot paniced when it tried to mount the root filesystem also complaining about not being able to remount the swap partition.
In general, converting a disk image from one hypervisor to another is not trivial, because of things such as missing drivers and different hardware being presented to the guest. The virt-v2v project exists to cover a lot of cases that you are probably overlooking in your manual attempt; I'd recommend trying that approach:
http://libguestfs.org/virt-v2v/
The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail
This disclaimer is unenforceable on a publicly-archived mailing list. You might want to consider using a personal email account rather than spamming the list with your employer's bogus legalese.
-- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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On 06/19/2014 08:23 AM, Paul Raines wrote: [please don't top-post on technical lists]
virt-v2v is not an option for me as all I have are the VMDK images and don't have the VMware software to covert to OVA first.
Still, asking the virt-v2v developers (on the libguestfs mailing list, rather than here), may get you more insight into your issues than what we can provide here.
I really don't understand what is going wrong. I also found https://access.redhat.com/site/solutions/20511 and that still doesn't work. Both /etc/fstab and grub.conf refer to the LABEL and not any device name.
In the boot process I see it explicitly says it is loading virtio_blk before the panic. So it is like that driver just doesn't see the disk. The host machine is a CentOS 6 box. Is it possible the virtio in the libvirt for CentOS/RHEL6 is not compatiable with the virtio_blk driver in CentOS/RHEL5? Either that, or something else getting loaded is causing interference?
Alas, I have no clue on what to suggest as your next debugging step. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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