Rob Owens wrote:
> Holger Parplies wrote:
>> - The higher the level of the incremental backup, the greater the speedup,
>> but the less certain you are of not having missed some changes.
> In the case of rsync, is a greater speedup achieved due to 1) less
> calculations to make about what to transfer, or 2) less actual transfer
> of files?
In backuppc's case the big differences are that an incremental run skips
files where the timestamp and length match in the directories where a
full compares block checksums over all files, and a full run also
rebuilds the pc directory completely.
> I'm still a little fuzzy about how rsync interacts with the pool, and
> I'm trying to minimize my file transfers on hosts that I back up over
> the internet. For instance, suppose my full backup consists only of
> fileA.txt and my first incremental backup consists of fileA.txt and
> fileB.txt. If no more files are added on the host, does my next level 1
> backup (using rsync) re-transfer fileB.txt because rsync is referencing
> the last full backup, even though fileB.txt already exists in the pool?
The 3.0 version has an option to control that.
--
Les Mikesell
[EMAIL PROTECTED]
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