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Added further clarifications for offline/noupdate

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Giuseppe Ragusa 2022-06-03 17:44:06 +02:00 committed by GitHub
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@ -63,16 +63,30 @@ sed -i -r \
#### Migration in offline mode
Offline mode has received minimal testing and only in the CentOS 8.5 -> Rocky 8.5
migration from a pristine system using a mounted CentOS 8.5 DVD ISO and a Rocky 8.5
ISO as offline repositories, mounted respectively under /mnt/centos and /mnt/rocky
(these pathnames are hardcoded into the script).
Offline mode has received minimal testing and only for the CentOS 8.5 -> Rocky 8.5/8.6
migration from a minimal (straight from installation or fully updated) system using a mounted
CentOS 8.5 DVD ISO and a Rocky 8.5/8.6 ISO as offline repositories, mounted respectively
under /mnt/centos and /mnt/rocky - these local pathnames are hardcoded into (and forced by) the
script for the CentOS case, while for other distros you will need to manually define local
repo paths under /etc/yum.repos.d/ before launching the script.
Please make sure that you do not inadvertently swap the former-distro/Rocky local repositories
when mounting ISOs.
Package downgrades may happen, depending on the update status of the running distro and
on the content of the local repositories (e.g. using a Rocky 8.5 mounted ISO for offline
updating a CentOS 8.5 with all latest updates applied before EOL).
Note that if you are disabling pre-migration updates then you will need only the base repositories'
metadata (repodata subdir) for the currently running distro (can be copied from original
installation ISO).
If you installed packages from further repos of the running distro (devel, extras, ha, powertools)
then you will need the same repos enabled and the corresponding local repos from Rocky
available (under /mnt/rocky/{Extras,HA,PowerTools,Devel}) before starting the migration,
otherwise make sure that those additional repos are disabled.
#### Migration with updating disabled
#### Migration with pre-updating disabled
Disabling running system update before migration has been introduced as a
convenience option for the offline conversion mode but it should be carefully
tested on a non-production system before attempting it even in offline mode.
Disabling system updates before migration has been introduced as a convenience option
mainly for the offline migration mode but it should be carefully tested on a non-production
system before attempting it even in offline mode.
#### Custom replacements of default repositories