Hi all,
I am using rsync to synchronize across two different filesystems (one is
an sshfs mount, while the other one is an xfs).
I am synchronizing from the xfs to the sshfs one.
The xfs filesystem has a sub-second resolution for modification
timestamps, while the sshfs one has a 1-second resolution.
My synchronization are always rather slow. When investigating why, I
realized that rsync is attempting to set the modification timestamp for
a bunch of files every single time, even though they have not changed.
Since I use the --size-only option, it is not transferring files (they
have not changed), but it is nevertheless attempting to set the
modification times.
Looking through the manpage, I discovered "--modify-window" which,
presumably, when set to 1, should avoid this behavior. Unfortunately, it
does not. I would expect that with "--modify-window=1", it would only
attempt to update the remote timestamp if the time delta is larger than
1 second.
Is this a bug or a feature ?
I am using rsync version 3.1.2 protocol version 31
--
---------------------------------
Maxime Boissonneault
Analyste de calcul - Calcul Québec, Université Laval
Président - Comité de coordination du soutien à la recherche de Calcul Québec
Team lead - Research Support National Team, Compute Canada
Instructeur Software Carpentry
Ph. D. en physique
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