Bug#1014509: apt install lets me fill the filesystem
On Thu, Jul 07, 2022 at 11:30:54AM +0200, intrigeri wrote:
> Package: apt
> Version: 2.5.1
> Severity: wishlist
>
> Hi,
>
> On a system with a very simple partition layout (/boot and /),
> with 2GB available on the root filesystem, APT lets me try to
> install packages that will fill the filesystem:
>
> 0 upgraded, 355 newly installed, 0 to remove and 0 not upgraded.
> Need to get 1,209 MB of archives.
> After this operation, 4,646 MB of additional disk space will be used.
> Do you want to continue? [Y/n]
>
> This operation later fails when dpkg unpacks packages.
>
> It would be sweet if APT could identify this foreseeable failure
> and error out or ask for a specific confirmation.
> It would be even sweeter if this was implemented in a way
> that frontends such as GNOME Software and Synaptic can present
> this information to the user in a usable manner.
>
> I understand this may not be easy to implement, because APT would need
> to know on which filesystems the additional space will be used,
> and that information is not available in Installed-Size.
My plan is to assume that Installed-Size is close enough to "size in
/usr", and just compare that with free space in /usr with like a 100MB
padding.
This does not work for kernels which install in /boot, and if anything
were to install stuff to /opt or /var and they are on a different FS;
but it should be correct for most packages on a supported (usrmerged)
system.
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