Manpages - cache_metadata_size.8

*cache_metadata_size *- Estimate the size of the metadata device needed for a given configuration.

  cache_metadata_size [options]

cache_metadata_size estimates the size of the metadata.

Either –nr-blocks, or –block-size and –device-size must be specified.

–nr-blocks {natural}

Specify the number of cache blocks.

–block-size {sectors}

Specify the size of each cache block in 512 byte sectors.

–device-size {sectors}

Specify total size of the fast device used in the cache. In 512 byte sectors.

–max-hint-width {nr bytes}

Specify hint width.

      Cache policies use a per block 'hint' to record extra info (for instance
      hit counts).  At the moment all policies use a 4 byte hint
      width.  If you want to use a different hint width specify it with this
      switch.

$ cache_metadata_size –nr-blocks 10240

$ cache_metadata_size –block-size 128 –device-size 1024000

cache_dump(8), cache_repair(8), cache_restore(8)

Joe Thornber <ejt@redhat.com>, Heinz Mauelshagen <heinzm@redhat.com>