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 converted 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 configuration 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 conversion.
LVM_BINARY: Allow to overide command called from lvm. Defaults to "lvm".
VDO_BINARY: Allow to overide command called from vdo. Defaults to "vdo".