John R Pierce wrote:
> Les Mikesell wrote:
>> Rsync normally creates the updated file under a tmp name and renames only when
>> the transfer is complete. It has the advantage that if you repeat the tranfer
>> with unchanged files it doesn't actually do it so you don't have to track which
>> files in a directory need to be updated - and it should work over ssh anywhere
>> you could use scp.
>>
>
> I thought the default mode for rsync involved block checksumming and
> only sending blocks that changed, which get written in place. there's
> options which modify this behavior.
No, the default creates a new file that is renamed only when complete. This is
much healthier for files that may be in use - or transfers that fail. Only the
differing blocks are transfered but a new complete copy is reassembled from the
old file and changes.
--
Les Mikesell
lesmikesell at gmail.com