Speeding Up Rsync for Large File Sets

Kevin Korb kmk at sanitarium.net
Fri Nov 30 11:03:56 MST 2012

Hash: SHA1

You are missing the snapshot part of it.  You send/receive a snapshot
then both ends have the same snapshot.

On 11/30/12 13:00, Tim Gustafson wrote:
>> If you are using zfs then why not use zfs send and zfs receive?
>> Rsync has to stat every file on both ends which can take a long
>> time with millions of files.  The zfs tools don't have to do any
>> of that.
> Because zfs send/receive doesn't work well if the target file
> system ever gets changed, even for something like an atime.
> Basically, the file system can't be touched on the remote end, and
> you can't even set the read-only property, because that would be a
> filesystem-level change that wouls break the send/receive.  Unless
> I'm not understanding something.

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