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Bug#637089: linux-2.6: tmpfs doesn't allow reserving blocks to the super user

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  Bug#637089: linux-2.6: tmpfs doesn't allow reserving blocks to the super user Salvatore Bonaccorso <carnil@debian.org> - 2025-04-25 10:40 +0200
    Bug#637089: linux-2.6: tmpfs doesn't allow reserving blocks to the super user Aurelien Jarno <aurel32@debian.org> - 2025-04-25 22:10 +0200

#87026 — Bug#637089: linux-2.6: tmpfs doesn't allow reserving blocks to the super user

Control: tags -1 + moreinfo

Hi Aurelien,

On Mon, Aug 08, 2011 at 03:10:22PM +0200, Aurelien Jarno wrote:
> Package: linux-2.6
> Severity: wishlist
> 
> More and more people are using a tmpfs filesystem for /tmp, and it is
> even something supported by the init scripts we ship. Contrary to most 
> other filesystems, there is no space reserved to the superuser. Given 
> any user can write to /tmp, and thus fully fill it. This breaks plenty
> of things like upgrade of packages using debconf, so tmpfs should
> definitely support having some blocks reserved to the super user.

I think this one should be closed on Debian end, if there is still
desire to have such support implemented (we do not have) it might need
to be brought to upstream.

Do you agree on closure?

Regards,
Salvatore

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#87069

Hi Salvatore,

On 2025-04-25 10:37, Salvatore Bonaccorso wrote:
> Control: tags -1 + moreinfo
> 
> Hi Aurelien,
> 
> On Mon, Aug 08, 2011 at 03:10:22PM +0200, Aurelien Jarno wrote:
> > Package: linux-2.6
> > Severity: wishlist
> > 
> > More and more people are using a tmpfs filesystem for /tmp, and it is
> > even something supported by the init scripts we ship. Contrary to most 
> > other filesystems, there is no space reserved to the superuser. Given 
> > any user can write to /tmp, and thus fully fill it. This breaks plenty
> > of things like upgrade of packages using debconf, so tmpfs should
> > definitely support having some blocks reserved to the super user.
> 
> I think this one should be closed on Debian end, if there is still
> desire to have such support implemented (we do not have) it might need
> to be brought to upstream.

This bug has been filled in response to #636694. While the problem has 
been fixed by stopping TMPDIR usage in the locales-all postinst, there 
is still a need for some space available in /tmp for upgrading or 
installing packages with debconf templates. On one side the problem is 
more likely to happen because tmpfs on /tmp is now the default in 
trixie. On the other hand systems have more RAM, so bigger /tmp, so the 
problem is less likely to happen.

> Do you agree on closure?

Yes, let's close it for now, we can always reopen it if it poses a 
real issue when more users upgrade to trixie.

Regards
Aurelien

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
aurelien@aurel32.net                     http://aurel32.net

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