RsyncP and --whole-file

Paul Gideon Dann <[email protected]>
Newsgroups gmane.comp.sysutils.backup.backuppc.devel
Message-ID <[email protected]>
Dear BackupPC developers,

I posted this to the Users' list (see http://snurl.com/vw631), but it seems 
noone was able to provide an answer, and as it relates to the implementation 
of RsyncP, I'm hoping you may be able to provide the answer I'm looking for:

I'm doing an rsync backup of localhost.  I've added checksum caching to speed 
things up, but I was wondering about whether RsyncP supports the --whole-file 
option, as bandwidth is clearly not an issue, and all that checksuming seems a 
waste of CPU time.  Furthermore, if it is possible to use the --whole-file 
option, how does that affect checksum caching?  Would it still help, or would 
it become irrelevant?  I imagine it would still save time calculating whole-
file checksums, but I'm not sure.

In rough tests, it seems so far that there's no noticeable difference between 
standard rsync, rsync with --whole-file, and rsync with --no-whole-file.  I 
would guess this means that RsyncP doesn't support the option.  Could be a 
nice feature though, I reckon.

Paul

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