VMware vSphere

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  • 1.  Disk consolidation and migration failing

    Posted May 22, 2015 12:40 PM

    We have a VM that we tried to remove a snapshot on.  When we removed the snapshot we received the status that the VM needed disk consolidation.  We cannot seem to complete this task because we keep getting the following error

    An error occurred while consolidating disks: 5 (input/output error)

    Host is ESXi 5.5.  Any way to determine why this is happening?  We cannot migrate or clone this VM either.  If we try to backup using VDP it fails because of an existing snapshot.

    The error I get when I try to migrate to another host and/or datastore is:

    Error caused by file /vmfs/volumes/<volume>/<vm folder>/<vm>_100-0002.vmdk

    This host is in vcenter along with two other hosts.  I have rebooted the VM, the host and the vcenter server but no luck.  The VM powers on fine. Any help would be appreciated.  Thanks. 

    Troy



  • 2.  RE: Disk consolidation and migration failing

    Posted May 22, 2015 01:13 PM

    If you use VDP it is possible that one hard disk of your VM is still connected to the VDP VM...

    Take a look in the VM Settings of the VDP - maybe you will find your Disk -> remove the disk from virtual machine



  • 3.  RE: Disk consolidation and migration failing

    Posted May 22, 2015 01:17 PM

    It is unexpected that you still can start the VM.
    With I/O errors I would expect a message whenever you try to start the VM.

    I see that you edited the error-message. Thats ok - but not really helpful in this case. The filename <vm>_100-0002.vmdk
    would not occur by standard UI-procedures: so please check if it is 0002.vmdk or 000002.vmdk

    Can you print the diskmapping of those vmdks with I/O errors by the command
    vmkfstools -p 0 <name.vmdk> ?

    Sometimes such non-working vmdk-chains can be manually consolidated when the VM is powered off and after adding an empty snapshot.
    Is that still possible ?



  • 4.  RE: Disk consolidation and migration failing

    Posted Jul 29, 2015 12:54 PM

    I am now experiencing this error on a second VM. Both instances the VM powers on just fine however it cannot be moved, migrated or disk consolidated.

    The most recent error occurred when trying to migrate one of the VMs to another datastore. It made it to 92% then errors with the following

    "Error caused by file /vmfs/volumes/..../vm01/vm01-000001.vmdk"

    We use VDP however there are no disks leftover on this appliance I've checked. Also this disk causing the error is not one of the current hard drives used by the VM.

    The next step I will try that I have come across and was mentioned here is create another snapshot and try to delete it.

    Thanks