There are better ways to snapshotting
Posted May 10, 2009 18:36 UTC (Sun) by anton
In reply to: There are better ways to snapshotting
Parent article: The two sides of reflink()
One of the advantages of ZFS style snapshotting is it is a constant time
operation that is far more efficient than walking a directory tree and
creating thousands of new inodes. It doesn't work for making a (writable)
snapshot of a snapshot, however
That may be a limitation of ZFS, but it's not a necessary limitation.
it, and nothing I have read about Btrfs indicates that it cannot do
Copy-on-write filesystems could use a good interface (like this one) to make
efficient *copies* of files in the same (extended) filesystem.
Yes, implementing cp more efficiently seems to be the main benefit I
see from this system call.
to post comments)