On Feb 3, 2010, at 3:46 PM, Ross Walker wrote:

> On Feb 3, 2010, at 12:35 PM, Frank Cusack <frank+lists/z...@linetwo.net> 
> wrote:
> 
>> On February 3, 2010 12:19:50 PM -0500 Frank Cusack 
>> <frank+lists/z...@linetwo.net> wrote:
>>> If you do need to know about deleted files, the find method still may
>>> be faster depending on how ddiff determines whether or not to do a
>>> file diff.  The docs don't explain the heuristics so I wouldn't want
>>> to guess on that.
>> 
>> An improvement on finding deleted files with the find method would
>> be to not limit your find criteria to files.  Directories with
>> deleted files will be newer than in the snapshot so you only need
>> to look at those directories.  I think this would be faster than
>> ddiff in most cases.
> 
> So was there a final consensus on the best way to find the difference between 
> two snapshots (files/directories added, files/directories deleted and 
> file/directories changed)?
> 
> Find won't do it, ddiff won't do it, I think the only real option is rsync. 
> Of course you can zfs send the snap to another system and do the rsync there 
> against a local previous version.

bart(1m) is designed to do this.
 -- richard

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