* performance of cp and mv between subvolumes
[not found] <AANLkTikwYXktHD7-H7LF+cn7zBpY8ZdDw+z=Zze1-C+w@mail.gmail.com>
@ 2010-10-07 9:57 ` Roman Kapusta
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From: Roman Kapusta @ 2010-10-07 9:57 UTC (permalink / raw)
To: linux-btrfs
Shouldn't be possible to move or copy (COW) big files between two
subvolumes of one btrfs filesystem instantly - without real data
movement?
cp --reflink between subvolumes is returning error: cp: failed to
clone `...': Invalid cross-device link
mv between subvolumes is really slow - looks like it is moving all data
To circumvent this I can create new snapshot and then remove
everything except files I want to copy/move to this new subvolume and
I gained the same effect quite fast, but indirectly, is there some way
how to do it directly when subvolume already exists?
Roman Kapusta
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2010-10-07 9:57 ` performance of cp and mv between subvolumes Roman Kapusta
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