Jonathan schrieb:
OpenSolaris Forums wrote:
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
No it won't. --inplace doesn't rewrite blocks identical on source and
target but only blocks which have been changed.
I use rsync to synchronize a directory with a few large files (each up
to 32 GB). Data normally gets appended to one file until it reaches the
size limit of 32 GB. Before I used --inplace a snapshot needed on
average ~16 GB. Now with --inplace it is just a few kBytes.
Daniel
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