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cache_metadata_size(8)      System Manager's Manual     cache_metadata_size(8)

NAME
       cache_metadata_size  -  Estimate the size of the metadata device needed
       for a given configuration.
SYNOPSIS
       cache_metadata_size [options]
DESCRIPTION
       cache_metadata_size estimates the size of the metadata.
              Either --nr-blocks, or --block-size and  --device-size  must  be
              specified.
OPTIONS
       --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.

EXAMPLE
       $ cache_metadata_size --nr-blocks 10240
       $ cache_metadata_size --block-size 128 --device-size 1024000
SEE ALSO
       cache_dump(8), cache_repair(8), cache_restore(8)
AUTHOR
       Joe Thornber <ejt AT redhat.com>, Heinz Mauelshagen <heinzm AT redhat.com>

System Manager's Manual       Device Mapper Tools       cache_metadata_size(8)