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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

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

OPTIONS

Specify the number of cache blocks.
Specify the size of each cache block in 512 byte sectors.
Specify total size of the fast device used in the cache. In 512 byte sectors.
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@redhat.com>, Heinz Mauelshagen <heinzm@redhat.com>

Device Mapper Tools System Manager's Manual