RE: [PATCH 0/1] fix copy out of apt cache after sbuild

["Schmidt, Adriaan" <adriaan.schmidt@siemens.com>]

'Felix Moessbauer' via isar-users <isar-users@googlegroups.com>, Monday, January 22, 2024 2:27 PM
> This series fixes the build issues reported in "potential race
> condition in sbuild post commands" by not copying symlinks. This has
> been tested on various large layers and seems to do the job. However,
> it still remains unclear why packages are missing in the apt cache
> under some rebuild scenarios.
> 
> While investigating this, I also noticed that we AGAIN have a quadratic
> space blow-up in the isar-apt directory that is copied into the build
> folder of each package. This makes me wonder if the whole APT handling
> is properly understood. IMHO this needs another haul-over, which is also
> indicated by the number of apt related issues which were reported in the
> last months.

https://github.com/ilbers/isar/blob/master/meta/classes/dpkg-base.bbclass#L198

Looking at the code, the intention is that hard links are used to pass isar-apt
into each package build. Could your measurement be counting those wrong?

And if we do think that another approach at handling the whole apt topic is worth
considering: I posted about that a while back ("[RFC PATCH] Remove isar-apt and
the corresponding lock" from 2022-10-19)...

Adriaan

> 
> Best regards,
> Felix
> 
> Felix Moessbauer (1):
>   fix copy out of apt cache after sbuild
> 
>  meta/classes/dpkg.bbclass | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --
> 2.39.2
> 
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