Another question is: why do you need an announcement for such an update. Complete rebuilds are expected to happen regularly and several times a year for TW. Nothing new at all (see the countless threads regarding this topic). If the big update doesn’t fit your current time schedule, simply hit “No” when zypper asks you to proceede. Nobody urges you to perform the update immediately.
This is a kind of mystery…
Btw. with the (no longer) new parallel zypper download, the time for an complete distribution upgrade decreased dramatically. The bottleneck is no longer the download speed but more your hardware which limits the installation speed.
BTW, I have a 100 MBit/s DSL link which pumps at maximum capacity with the large openSUSE distribution upgrades and, Apple macOS and, Apple TV upgrades – for me the few GiB aren’t an issue …
That’s not the purpose of the announcement. Right at the top it has
“Please note that this mail was generated by a script.
The described changes are computed based on the x86_64 DVD.
The full online repo contains too many changes to be listed here.”
What is listed in the announcement message is just changes that exist on the iso release. It’s not a full recounting of what each snapshot entails.
Yes, the /var partition needs to be large enough but, there’s a Zypp configuration parameter to place the Zypp Cache for the downloaded packages in a partition with enough space →
> cat /etc/zypp/zypp.conf.d/09-zypp_packagesdir.conf
# zypp.conf - General configuration for libzypp based package management tools
#
# Lookup of section and key names is case-sensitive.
#
# Where a Boolean value is expected, any of 1, 0, yes, no, on, off, true or false can be used.
# Comparisons here are case-insensitive.
#
[main]
#
# Path where the downloaded packages are kept.
#
packagesdir = /home01/VarCache/zypp/packages
>
I have a 16.7 GB /var partition – there were a couple of Tumbleweed snapshots which almost, but not quite, used all the available free space – which is why I placed the Zypp packages cache on a 4 TB partition …