[CentOS-devel] CentOS-7 Public QA Buildtag 140617

[Fred Smith]

On Wed, Jun 25, 2014 at 11:14:31PM +0100, Karanbir Singh wrote:
> On 06/25/2014 11:09 PM, Fred Smith wrote:
> > On Wed, Jun 25, 2014 at 03:48:31PM -0600, Scott Dowdle wrote:
> >> Greetings,
> >>
> >> ----- Original Message -----
> >>> # yum reinstall kernel
> >>> Loaded plugins: langpacks
> >>> Skipping the running kernel: kernel-3.10.0-123.el7.x86_64
> >>> Error: Nothing to do
> >>
> >> The issue is the kernel you are running/have installed is newer than
> >> the one provided by the "yum distro-sync full" operation and updating to
> >> older kernels isn't something it was designed to do.  You can get past
> >> that by manually installing the older kernel by referring to it by the
> >> complete name including version number... and then rebooting making sure
> >> to boot the older kernel.  When the undesired kernel is no longer the
> >> one that is running, you can remove it... and a "yum distro-sync full"
> >> should be happy.
> > 
> > So, if I'm using a kernel I got from the 7-RC (the -latest) "repo",
> > how could it have gotten out of sync?
> > 
> > Looking at "yum list available" to see what kernel is on the "repo",
> > I see it's 3.10.0-123 which is the same as what's installed.
> > 
> > Seems like a "catch-22" wherein if you have only one kernel on the
> > box, you can't replace it because it's the only kernel on the box.
> > or something of that ilk.
> > 
> 
> yum wont replace the kernel you are currently running, that is indeed an
> issue and the reason you hit this is that the new kernel in the latest
> build from today is indeed different and has different code inside there
> - but its the same name-version-release
> 
> you just hit a classic CentOS QA issue - and this is also why we go out
> of our way to be pedantic about not-for-users.
> 
> your only way to get the new kernel is to reinstall the machine, or to
> find something else somewhere ( plus kernel ? ) boot it, replace the
> distro kernel, boot back and hope for the best.

OK, it's no big deal to reinstall, it's just a VM, created for the
purpose of beating on C7.

thanks!

-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us -----------------------------
                       I can do all things through Christ 
                              who strengthens me.
------------------------------ Philippians 4:13 -------------------------------