update-manager should guess an estimative of upgrade size to prevent running out of free disk

This of course also affects any apt-get install, on a smaller scale.
So apt-get should also try to calculate/estimate necessary disk before installing/upgrading any package.

ubuntu

Danesh did u really meant to assign yourself this bug?
Because if you dont, then this bug will come out of the radar of other devs, and wont get fixed.

This is really painful problem, which of course affect only space-limited systems, like USB-key casper installations, and makes them useless :-(
It should possible to easily select/sort packages from their "status" (recommended or security) and size (after install, not just download).

APT shows size requirements, as stated in the package.

Julian,
we all know that size requirements are shown. This is not about showing. It is about using that information (either manually by the user or automatically by the program) to prevent to fill up the disk and made the system unstable and/or unusable.
This is VERY relevant for USB-key casper installations, since at present they are completely useless just because of this problem. Have you ever tried them, and I mean not just installation, but actual use for a few weeks (until several updates accumulate)?
Feel free to close this bug if you don't think it will be fixed, but please try to understand it before doing so.

We do use this information and we do not continue if we do not have enough free space available for downloading. We can't check whether there is enough free space for installing, as we do not know where the files will land, and they may be on different mount points.

Clearly you are not reading what I wrote in the first place. I understand that you might be busy and you might have things more important than this bug, but in such a case please leave it alone, and please don't try to guess what people mean without carefully reading what they wrote.

I wrote:
> It should possible to easily select/sort packages from
> their "status" (recommended or security) and size
> (after install, not just download).

At present users are supposed to do this by themselves, which is fine on a fully-fledged disk installation (just leave the default "all is selected" and confirm), but it is impossible to manage on a USB-key casper installations.

If the process cannot be automatic for the reasons you mentioned, then there must be at least an option to sort packages per various criteria (e.g. recommended, security, size) and let the user bulk-select and bulk-deselect them (e.g. with CTRL and SHIFT clicking). Individual package selection as it is now it's unacceptable for the scenario I'm describing, i.e. a USB-key casper installations.

Now, I'm fine if you say that you don't care about this problem and you don't WANT to fix it, and you close the bug with this statement.

However you cannot state that this bug is non-existent and that the system already takes care of this problem, because it does not. More than that! It does make it very hard for the users to take care of the problem themselves.

That's a completely different thing than this bug was initially about. And I only care about the APT part, yes. And yes, it is impossible to know whether the disc gets full or not. Users must check this themselves

(Undoing unexplained change by non-subscriber.)

Status changed to 'Confirmed' because the bug affects multiple users.