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FSADM(8)                                                              FSADM(8)
NAME
       lvm_import_vdo  --  utility  to  import  VDO  volumes into a new volume
       group.
SYNOPSIS
       lvm_import_vdo
                 [options] device
DESCRIPTION
       lvm_import_vdo utility imports VDO volumes created and managed by
       vdo(8) manager into lvm2(8) managed VDO LV. This is realized by moving
       VDO superblock by 2MiB and creating lvm2 metadata at the front of this
       device. The operation is not reversible, thus after conversion to lvm2
       the access to VDO data is only possible with lvm2(8) commands, vdo(8)
       manager no longer control such volume.
OPTIONS
       -f|--force
              Bypass some sanity checks.
       -h|--help
              Display the help text.
       -n|--name
              Specifies the name of converted VDO LV. When the name is not
              specified, some automatic name is selected. In case the con-
              verted VDO volume is already using LV a backend device, the name
              of this LV is used for VDO LV.  In this case also the of volume
              group must stay same.  Automatic name may change between
              releases and currently selects "vdolv" as LV name and VG name is
              selected from sequence "vdovg", "vdovg1", ...
       -v|--verbose
              Be more verbose.
       -y|--yes
              Answer "yes" at any prompts.
       --dry-run
              Print verbosely commands without running them.
       --no-snapshot
              With this option conversion tool will not use snapshot (COW
              storage) for conversion in your $TMPDIR filesystem and it will
              directly manipulate with VDO device in-place.  Warning: the
              snapshot usage makes the whole conversion transactional and the
              snapshot can be just simply merged once the whole conversion has
              successfully proceeded. In the case of error the snapshot is
              just removed.  Without the use of snapshot there is higher risk
              of problems with recoverability in case some unexpected error
              occurs.
       --vdo-config
              Configuration file for VDO manager. Can be used to specify con-
              figuration for vdo manager.
DIAGNOSTICS
       On successful completion, the status code is 0.  A status code of 1 is
       used for failure.
EXAMPLES
       Convert VDO volume created by vdo manager into logical volume LV1 with
       within volume group VG1.
       # lvm_import_vdo --name VG1/LV1 /dev/mapper/vdo-volume
ENVIRONMENT VARIABLES
       TMPDIR The temporary directory name for mount points. Defaults to
              "/tmp".
       DM_DEV_DIR
              The device directory name.  Defaults to "/dev" and must be an
              absolute path.
       DM_UUID_PREFIX
              Specify uuid prefix for snapshot volume used during vdo conver-
              sion.
       LVM_BINARY
              Allow to overide command called from lvm. Defaults to "lvm".
       VDO_BINARY
              Allow to overide command called from vdo. Defaults to "vdo".
SEE ALSO
       lvm(8), lvm.conf(5),
       vdo(8),
Red Hat, Inc        LVM TOOLS 2.03.14(2)-RHEL8 (2021-10-20)           FSADM(8)