[Yum] Rollback option with YUM

[andrea stravino]

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Seth Vidal ha scritto:
>
>
> 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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