Why is my rsync transfer slow?

Kevin Korb kmk at sanitarium.net
Sat Jan 23 21:02:54 UTC 2016


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What was your rsync source and target that made those?

On 01/23/2016 03:44 PM, dbonde+forum+rsync.lists.samba.org at gmail.com
wrote:
> On 2016-01-23 21:16, Kevin Korb wrote:
>> As long as it still sees both links it is fine.
>> 
>> Essentially, the way it works is that whenever rsync -H (on the 
>> source) sees a file with a link count >1 it remembers the 
>> inode#>filename pair.  If it finds another instance of that inode
>> it then links to the same file on the target.  So, if you abort
>> after it copies one but before it links the other it will still
>> handle it correctly on the next run.
>> 
>> It just won't handle it if you rsync tree #1 then rsync tree #2.
>> It won't see a hard link that is common to both since it wasn't
>> analyzing them together.
> 
> I'm not sure I understand your answer. As you could see in my
> previous message, the files that should be linked but was
> duplicated was located in the same root directory ("/backups"):
> 
> /backups/2011-06-23-040258/Pictures/DSCF0748.JPG"
> 
> 
> /backups/2010-12-18-070445/Pictures/DSCF0748.JPG"
> 
> Why is rsync losing track of the links just because the transfer
> was interrupted if your explanation is correct?
> 

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