09-28-2007
There is no API to write directory metadata - the kernel does all of it. open, close, unlink, chown, chmod etc. all ultimately result in changes to metadata. What you are calling "write to directories"
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LEARN ABOUT CENTOS
cache_restore
CACHE_RESTORE(8) System Manager's Manual CACHE_RESTORE(8)
NAME
cache_restore - restore cache metadata file to device or file
SYNOPSIS
cache_restore [options] -i {device|file} -o {device|file}
DESCRIPTION
cache_restore restores cache metadata created by the respective device-mapper target dumped into an XML formatted (see cache_dump(8)) file
, which optionally can be preprocessed before the restore to another device or file. If restored to a metadata device , the metadata can
be processed by the device-mapper target.
-i, --input {device|file}
Input file or device with metadata.
-o, --output {device|file}
Output file or device.
{--debug-override-metadata-version} <integer>
ONLY FOR DEBUGGING PURPOSES:
override the version stored in the metadata.
-h, --help
Print help and exit.
-V, --version
Output version information and exit.
EXAMPLE
Restores the XML formatted cache metadata on file metadata to logical volume /dev/vg/metadata for further processing by the respective
device-mapper target:
cache_restore -i metadata -o /dev/vg/metadata
DIAGNOSTICS
cache_restore returns an exit code of 0 for success or 1 for error.
SEE ALSO
cache_dump(8) cache_check(8) cache_repair(8)
AUTHOR
Joe Thornber <ejt@redhat.com>
Heinz Mauelshagen <HeinzM@RedHat.com>
Red Hat, Inc. Thin Provisioning Tools CACHE_RESTORE(8)