Provided by: libguestfs-tools_1.40.2-2ubuntu6_amd64 bug


       virt-v2v-output-rhv - Using virt-v2v to convert guests to oVirt or RHV


        virt-v2v [-i* options] -o rhv-upload [-oc ENGINE_URL] -os STORAGE
                               [-op PASSWORD] [-of raw]
                               [-oo rhv-cafile=FILE]
                               [-oo rhv-cluster=CLUSTER]
                               [-oo rhv-direct]
                               [-oo rhv-verifypeer]

        virt-v2v [-i* options] -o rhv -os [esd:/path|/path]

        virt-v2v [-i* options] -o vdsm
                               [-oo vdsm-image-uuid=UUID]
                               [-oo vdsm-vol-uuid=UUID]
                               [-oo vdsm-vm-uuid=UUID]
                               [-oo vdsm-ovf-output=DIR]


       This page documents how to use virt-v2v(1) to convert guests to an oVirt or RHV management
       instance.  There are three output modes that you can select, but only -o rhv-upload should
       be used normally, the other two are deprecated:

       -o rhv-upload -os STORAGE
           Full description: "OUTPUT TO RHV"

           This is the modern method for uploading to oVirt/RHV via the REST API.  It requires
           oVirt/RHV ≥ 4.2.

       -o rhv -os esd:/path
       -o rhv -os /path
           Full description: "OUTPUT TO EXPORT STORAGE DOMAIN"

           This is the old method for uploading to oVirt/RHV via the Export Storage Domain (ESD).
           The ESD can either be accessed over NFS (using the -os esd:/path form) or if you have
           already NFS-mounted it somewhere specify the path to the mountpoint as -os /path.

           The Export Storage Domain was deprecated in oVirt 4, and so we expect that this method
           will stop working at some point in the future.

       -o vdsm
           This is the old method used internally by the RHV-M user interface.  It is never
           intended to be used directly by end users.


       This new method to upload guests to oVirt or RHV directly via the REST API requires
       oVirt/RHV ≥ 4.2.

       You need to specify -o rhv-upload as well as the following extra parameters:

       -oc ""
           The URL of the REST API which is usually the server name with "/ovirt-engine/api"
           appended, but might be different if you installed oVirt Engine on a different path.

           You can optionally add a username and port number to the URL.  If the username is not
           specified then virt-v2v defaults to using "admin@internal" which is the typical
           superuser account for oVirt instances.

       -of raw
           Currently you must use -of raw and you cannot use -oa preallocated.

           These restrictions will be loosened in a future version.

       -op password-file
           A file containing a password to be used when connecting to the oVirt engine.  Note the
           file should contain the whole password, without any trailing newline, and for security
           the file should have mode 0600 so that others cannot read it.

       -os "ovirt-data"
           The storage domain.

       -oo rhv-cafile=ca.pem
           The ca.pem file (Certificate Authority), copied from /etc/pki/ovirt-engine/ca.pem on
           the oVirt engine.

       -oo rhv-cluster="CLUSTERNAME"
           Set the RHV Cluster Name.  If not given it uses "Default".

       -oo rhv-direct
           If this option is given then virt-v2v will attempt to directly upload the disk to the
           oVirt node, otherwise it will proxy the upload through the oVirt engine.  Direct
           upload requires that you have network access to the oVirt nodes.  Non-direct upload is
           slightly slower but should work in all situations.

       -oo rhv-verifypeer
           Verify the oVirt/RHV server’s identity by checking the server‘s certificate against
           the Certificate Authority.


       This section only applies to the -o rhv output mode.  If you use virt-v2v from the RHV-M
       user interface, then behind the scenes the import is managed by VDSM using the -o vdsm
       output mode (which end users should not try to use directly).

       You have to specify -o rhv and an -os option that points to the RHV-M Export Storage
       Domain.  You can either specify the NFS server and mountpoint, eg.
       "-os rhv-storage:/rhv/export", or you can mount that first and point to the directory
       where it is mounted, eg. "-os /tmp/mnt".  Be careful not to point to the Data Storage
       Domain by accident as that will not work.

       On successful completion virt-v2v will have written the new guest to the Export Storage
       Domain, but it will not yet be ready to run.  It must be imported into RHV using the UI
       before it can be used.

       In RHV ≥ 2.2 this is done from the Storage tab.  Select the export domain the guest was
       written to.  A pane will appear underneath the storage domain list displaying several
       tabs, one of which is "VM Import".  The converted guest will be listed here.  Select the
       appropriate guest an click "Import".  See the RHV documentation for additional details.

       If you export several guests, then you can import them all at the same time through the

   Testing RHV conversions
       If you do not have an oVirt or RHV instance to test against, then you can test conversions
       by creating a directory structure which looks enough like a RHV-M Export Storage Domain to
       trick virt-v2v:

        mkdir /tmp/rhv
        mkdir /tmp/rhv/$uuid
        mkdir /tmp/rhv/$uuid/images
        mkdir /tmp/rhv/$uuid/master
        mkdir /tmp/rhv/$uuid/master/vms
        touch /tmp/rhv/$uuid/dom_md
        virt-v2v [...] -o rhv -os /tmp/rhv

   Debugging RHV-M import failures
       When you export to the RHV-M Export Storage Domain, and then import that guest through the
       RHV-M UI, you may encounter an import failure.  Diagnosing these failures is infuriatingly
       difficult as the UI generally hides the true reason for the failure.

       There are several log files of interest:

           In oVirt ≥ 4.1.0, VDSM preserves the virt-v2v log file for 30 days in this directory.

           This directory is found on the host which performed the conversion.  The host can be
           selected in the import dialog, or can be found under the "Events" tab in oVirt

           As above, this file is present on the host which performed the conversion.  It
           contains detailed error messages from low-level operations executed by VDSM, and is
           useful if the error was not caused by virt-v2v, but by VDSM.

           This log file is stored on the RHV-M server.  It contains more detail for any errors
           caused by the oVirt GUI.




       Richard W.M. Jones


       Copyright (C) 2009-2019 Red Hat Inc.



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