Thanks for your response, from which I have known more details. However, there
is one thing I am still not clear--maybe at first the size of a file is smaller
than 128KB(or user-defined value), zfs can adopt some block size as you
described, but when the size becomes more than 128KB by reason of appending,
then should it adopt the "bigger" strategy? If so, what would happen to the
blocks? I guess that the size of those blocks which are allocated when the size
of the file is smaller than 128KB remains unchanged, while those new blocks
allocated when the file size has exceeded 128KB would adopt new strategy.
Is that right?
Thanks!
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