On Tue, 25 Aug 2009, Aawardhan Logandhan wrote:
Hi all,
Does YUM support transaction level rollback? i.e., if I upgrade my machine from RHEL 4.0 to RHEL 5.0 using YUM, and if
something goes wrong I want to rollback the entire transaction, so that the upgrade process does not make my system
unstable.
I read this link,
http://www.linuxjournal.com/article/7034
That article is very old now and never really worked to begin with.
is this a reliable approach?
does YUM have a repackage option? and based in the exit option of YUM I can rollback the entire transaction.
No.
Yum has a reinstall command now which can put back the same version. We
even have a very limited 'downgrade' command which can downgrade to a
specific version of a specific package. However downgrading an entire
distro major-version release is never going to happen.
Rhel-4.0->rhel5.0 is a one-way trip with yum.
If you want to do an revert an update like that then you will need to do a
complete backup of your rhel4 system before you update it.
-sv
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