CentOS - Jan 2017 - samba rpm deps - with yum downgrade = kind of a mayhem

On 25/01/17 14:26, Jonathan Billings wrote:
> On Wed, Jan 25, 2017 at 11:32:16AM +0000, lejeczek wrote:
>> hi guys, gals
>>
>> do you see this:
>>
>> ~]$ yum downgrade samba
>> Resolving Dependencies
>> [...]
>> --> Processing Dependency: libtevent.so.0(TEVENT_0.9.9) for package:
>> samba-client-libs-4.4.4
>>
>> ..and process fails.
>> chained are i686 arch? Is it only us(centos) or redhat's bugzilla
should be
>> notified.
>> Samba downgrade used to work I remember.
> Most likely there are dependencies that aren't available in your
> current repos that are preventing the downgrade.  Perhaps its due to
> the recent point release to 7.1611?
>
> The packages installed with a 'yum downgrade' are unlikely to be
> supported, so this is probably not really something that CentOS
> supports.
>
but Centos should, right?
Being able to downgrade can save you a day or a few. I know, 
for it did save mine several times, eg. buggy samba new 
update and downgrade fixed it, etc.
We absolutely should be able to downgrade every rpm, if this 
is just a matter of an opinion(I'd fail to see any other 
reasons to not do it) then my vote goes obviously to - 
Centos/repos maintainers please make sure "yum downgrade" 
will always work.

many thank,
L

On Thu, Jan 26, 2017 at 11:44:06AM +0000, lejeczek
wrote:
> but Centos should, right?
> Being able to downgrade can save you a day or a few. I know, for it did
save
> mine several times, eg. buggy samba new update and downgrade fixed it, etc.
> We absolutely should be able to downgrade every rpm, if this is just a
> matter of an opinion(I'd fail to see any other reasons to not do it)
then my
> vote goes obviously to - Centos/repos maintainers please make sure
"yum
> downgrade" will always work.
If you maintain your own private yum repositories, you can certainly
downgrade to versions you provide yourself.  But being able to
downgrade to any arbitrary package using the CentOS repos would use up
considerable storage resources. The repo maintainers aren't psychic,
so they'd have to keep EVERY SINGLE RPM. Every mirror would have to
keep every RPM too.

This is why I have a testing infrastructure to test updates.

-- 
Jonathan Billings <billings at negate.org>

On 26/01/17 14:44, Jonathan Billings wrote:
> On Thu, Jan 26, 2017 at 11:44:06AM +0000, lejeczek wrote:
>> but Centos should, right?
>> Being able to downgrade can save you a day or a few. I know, for it did
save
>> mine several times, eg. buggy samba new update and downgrade fixed it,
etc.
>> We absolutely should be able to downgrade every rpm, if this is just a
>> matter of an opinion(I'd fail to see any other reasons to not do
it) then my
>> vote goes obviously to - Centos/repos maintainers please make sure
"yum
>> downgrade" will always work.
> If you maintain your own private yum repositories, you can certainly
> downgrade to versions you provide yourself.  But being able to
> downgrade to any arbitrary package using the CentOS repos would use up
> considerable storage resources. The repo maintainers aren't psychic,
> so they'd have to keep EVERY SINGLE RPM. Every mirror would have to
> keep every RPM too.
no no, not every single rpm! Only one prior, one from which 
you are upgrading, would suffice.
Don't make it bigger than it actually is please.
Other repos don't have problem with it. AFAIR Scientific 
Linux had no problem with this, at least that was the case 
not that long ago, chances are they still to it.
> This is why I have a testing infrastructure to test updates.
>