how to use --checksum-seed ?
matt at mattmccutchen.net
Tue Oct 14 00:27:49 GMT 2008
On Mon, 2008-10-13 at 11:02 -0400, CSights wrote:
> I've been trying to use "--checksum-seed" to speed up backups . I have a
> homebrew script which creates incremental backups using hardlinks. To save
> disk space I turn on --checksum so that when file's mod-times change rsync
> doesn't create a new file (breaking the hardlinking) unless the contents of
> the file are different as well.
> I tested the command:
> #rsync -aHiy -r --delete --ignore-errors --checksum --checksum-seed=1 fromdir
> but I couldn't find where the checksums were being cached.
--checksum-seed sets the seed used in the computation of checksums; it
does not cache checksums. For that, look into the checksum-reading.diff
or checksum-xattr.diff patches that come with rsync.
More information about the rsync