OpenSolaris Forums wrote: > if you rsync data to zfs over existing files, you need to take > something more into account: > > if you have a snapshot of your files and rsync the same files again, > you need to use "--inplace" rsync option , otherwise completely new > blocks will be allocated for the new files. that`s because rsync will > write entirely new file and rename it over the old one.
ZFS will allocate new blocks either way, check here http://all-unix.blogspot.com/2007/03/zfs-cow-and-relate-features.html for more information about how Copy-On-Write works. Jonathan _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
