Section 8 · System administration
vdodumpmetadata.8
Package: vdo-support
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VDODUMPMETADATA
NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
SEE ALSO
NAME
vdodumpmetadata − dump the metadata regions from a VDO device
SYNOPSIS
vdodumpmetadata [−−no−block−map] [**−−lbn=**lbn] vdoBacking outputFile
DESCRIPTION
vdodumpmetadata dumps the metadata regions of a VDO device to another file, to enable save and transfer of metadata from a VDO without transfer of the entire backing store.
vdoBacking must be the path of the VDODataLV as described in lvmvdo(7).
vdodumpmetadata will produce a large output file. The expected size is roughly equal to VDO’s metadata size. A rough estimate of the storage needed is 1.4 GB per TB of logical space.
OPTIONS
−−no−block−map
Omit the block map. The output file will be of size no higher than 130MB + (9 MB per slab).
| −−lbn | Saves the block map page associated with the specified LBN in the output file. This option may be specified up to 255 times. Implies −−no−block−map. |
EXAMPLE
lvchange -ay vdo1/vdo0pool_vdata
vdodumpmetadata /dev/mapper/vdo1-vdo0pool_vdata vdo1-meta-dump
lvchange -an vdo1/vdo0pool_vdata
SEE ALSO
lvmvdo(7), lvchange(8), vdodebugmetadata(8)