[ATrpms-users] FC6 suspend2 kernel dependency problems

Axel Thimm Axel.Thimm at ATrpms.net
Thu Mar 1 06:21:30 CET 2007

On Wed, Feb 28, 2007 at 09:57:33PM -0500, Phil Schaffner wrote:
> On Thu, 2007-03-01 at 00:24 +0100, Axel Thimm wrote:
> > On Wed, Feb 28, 2007 at 05:57:25PM -0500, Phil Schaffner wrote:
> > > Today I decided to clean up some older suspend2 2.6.18 kernels on an FC6
> > > laptop and encountered a problem in that the 2.6.19 suspend2 kernels,
> > > unlike older ones, do not provide "kernel", just "kernel-i686".  This
> > > causes yum to want to remove needed packages, or rpm to complain about
> > > dependencies.  Don't know if this is a problem with standard kernels,
> > > smp kernels, ..., or not.  Details follow.  (The file RPMS_Installed has
> > > a list of all current RPMs to avoid repeated "rpm -q" queries.)
> > 
> > That looks more like a yum bug,
> Don't think so - seems to be a real dependency problem.
> > > [root at hazard2 ~]# yum remove `grep -E "kernel|kmdl|suspend2" RPMS_Installed | grep 18`
> > 
> > what happens if you replace "yum remove" with "rpm --test -e"?
> Not at work right now to supply the exact error, but I did try "rpm
> -e ...".  That's what I meant by "This causes yum to want to remove
> needed packages, or rpm to complain about dependencies." above. The rpm
> erase failed due to the unsatisfied dependencies if the
> kernel-suspend2-2.6.18 packages were to be removed.

> I'm relatively certain the problem is the failure of the 2.6.19 kernels
> to provide "kernel" as I said, and demonstrated, earlier.  Not a yum
> problem. (e.g. "a severe bug")  See below...

OK, I can see clearer, now, it looks like you *only* have
kernel-suspend2 installed and no vendor kernels anymore, so the system
effectively thinks you have no kernel at all and some packages require
a kernel ;)

I understand the problem now. But we can't fix it (I think). There is
an ugly rpm bug, that compares virtual provides with non-virtual
package names. This leads to spurious erasures when upgrading a
package. This doesn't happen with kernel usually, because you install
them, but it's still rather dangerous (e.g. rpm -Uhv kernel-suspend2*
will nuke kernel). That's probably the reason why Matthias
removed/renamed the provides.

Hm, needs some thinking. First of all thanks a lot for the report, and
for your trust in running only suspend2 kernels :)

Could you please cut and paste the relevant findings of the bug to
bugzilla.atrpms.net? I'll get Matthias on the Cc and we'll hopefully
find some better solution. Thanks!
Axel.Thimm at ATrpms.net
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