vzcache

The vzcache utility scans the specified Containers for common files and caches these files in the server template area ( /vz/template/vc by default), replacing the real files inside the Containers with symlinks to the template area. In the case of a significant number of identical files, using this utility results in a notable disk space gain. vzcache has the following syntax:

vzcache [ options ] CT_ID-list

The following command-line options can be used with the vzcache utility:

Option	Description
`-h` , `--help`	Print the usage information.
`--version`	Display the utility version.
`-v` , `--verbose`	Verbose mode. Causes `vzcache` to print debugging messages about its progress. Multiple `-v` options increase verbosity; the maximal number is 2.
`-q` , `--quiet`	Quiet mode. Print error messages only.
`-r` , `--cachearea`	Process the Container template area only. During the `vzcache` execution, a separate template area ( `/vz/template/vc/` `CT_UUID` by default) is created for each specified Container. `CT_UUID` denotes the Container unique identifier and can be determined by viewing the `UUID` parameter in the Container configuration file. You are recommended to use this option when running `vzcache` for migrated or restored Containers.
`-C` , `--clean`	Clears the Container template area ( `/vz/template/vc/` `CT_UUID` by default) from those cached files that are not present any more inside the corresponding Container. Only one Container can be cleaned up at a time.
`-s` , `--size-limit` `N`	Do not process files smaller than `N` bytes. By default, only empty files are not processed.

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