I agree that ubiquity's partitioner needs to be optimised. Some of this
is just slowness in partman, although some of the places where ubiquity
currently asks partman for information could be (carefully!) hardcoded
in ubiquity.
Ubiquity's former use of GParted was not only confusing, but also wrong
in ways that sometimes resulted in serious data loss and were
fundamentally extremely hard to fix in place. I hope it's clear why my
first priority in writing the new partitioner was correctness rather
than speed.
You aren't quite accurate that there is no reason to refresh the
partition view. The reason refreshes happen at the moment is that, even
though the partitions aren't necessarily changing, the available options
for each partition may well change: for instance, changing the type of a
partition to fat32 means that it can no longer be mounted on /. These
options are generated by code that's (intentionally!) common to the
alternate and desktop installers, and running it involves calling out to
refresh the partition view. I do absolutely concede that it is not done
efficiently at the moment, and that it would be possible to (a) refresh
in fewer circumstances, (b) refresh fewer partitions, (c) speed up
refreshes. I hope we'll be able to work on this in Gutsy.
** Changed in: ubiquity (Ubuntu)
Importance: Undecided => High
Status: Unconfirmed => Confirmed
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Partition tool in installer refreshes unnecessarily
https://bugs.launchpad.net/bugs/113715
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