rsync behavior on copy-on-write filesystems

Allen Supynuk allen.supynuk at
Wed May 22 12:43:36 MDT 2013


I will try again over a remote connection to see if that makes a
difference. Not expecting -z to day much of anything based on the
random data, just wanting to be consistent with the flags in the
finished solution.


You only get --whole-file if you specify it (or -W).


For my first couple of days of testing I dutifully did both 'df -h .'
and 'btrfs filesystem df .' until I saw that they give the same answer
after you wait for background cleanup. In this case we are only adding
files so no background cleanup applies.

On 5/22/13, Paul Slootman <paul+rsync at> wrote:
> On Tue 21 May 2013, Allen Supynuk wrote:
>> ## 1) Start with an empty filesystem
>> $ df -h .
> Note that you need to be using "btrfs filesystem df ."
> for reliable numbers; the normal df does not take into account
> background cleanups etc.
> Paul
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