John Pettitt wrote:
>>
>>>> If you use rsync as the transport you never actually transfer
>>>> unchanged files again - you only make a pass over the files
>>>> comparing block checksums. This takes some time/cpu at each end but
>>>> not a lot of bandwidth.
>>>>
>>> So that means that even a full backup uses the old backup as the
>>> basis for the transfer? I assume also then that files deleted off of
>>> the server will not be deleted off the backup since the default rsync
>>> options don't include any of the delete options. Is there a way to
>>> fix this?
>>>
>>
>> If you have the time for the file checksumming, just do rsync fulls
>> every time. This will reconstruct the backup file tree without the
>> deleted files.
>>
>>
> The problem with doing a full every time is that on the client rsync has
> to read all the data to do the checksums - this is a non-trivial load
> for many systems.
Yes, it might not work everywhere, but machines that are normally idle
at night and manage once a week can probably do it every night. It
might work to remove the "--ignore-times" from the full rsync command
and only put it back once in a while to verify your data.
--
Les Mikesell
[EMAIL PROTECTED]
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