[CentOS-devel] CBS kernel-debuginfo packages

On 6/7/2016 11:22 AM, Johnny Hughes wrote:
> On 06/07/2016 09:56 AM, Wayne Betts wrote:
>> I'm not sure if this is an appropriate place for this question - please gently
>> steer me to a better place if you think there is one.
>>
>> I have a machine using a kernel package from the CentOS Community Build System
>> (specifically kernel-3.18.21-16.el6 from
>> http://cbs.centos.org/koji/buildinfo?buildID=4757, but my question applies to
>> other CBS kernel versions as well from what I can tell)
>>
>> The machine is crashing with some regularity on Sunday mornings.  Looking at a
>> kdump core dump might help narrow down the cause of the crashes.
>>
>> But the CBS kernel packages don't appear to include kernel-debuginfo packages,
>> and the kernel.spec file appears to me (a non-expert for sure) to have had the
>> necessary pieces removed, so I don't know how to rebuild from the srpm and get
>> the debuginfo packages that way either.
>>
>> If someone could help me find or build the kernel-debuginfo package, it will be
>> appreciated.
>>
> 
> Those kernel packages do not build debuginfo files.  That is also not
> nearly the newest package.  There is a 3.18.34-20 package here:
> 
> http://cbs.centos.org/koji/buildinfo?buildID=11179
> 
> You can see the packages that are built and look at all the build logs
> and root logs, etc, by going to:
> 
> http://cbs.centos.org/koji/
> 
> and adding kernel in the search box .. then picking the version you are
> interested in.
> 
> But, as you can see in the above link, there are no debuginfo files
> produced.
> 
> However, we do take updates directly from the kernel.org 3.18 LTS kernel
> tree, so there are a lot of things that have been fixed (and a lot of
> security updates) since 3.18.21 .. in fact you can see all of the
> changelogs starting with :
> 
> https://cdn.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.22
> 
> and using 23, 24. 25, 26, 27, 28, 29, 30, 31, 32, 33, and 34 for the
> last number to review all the changelogs.
> 
> Thanks,
> Johnny Hughes
> 


Thank you for your reply Johnny.  I tried the latest,
kernel-3.18.34-20.el6.x86_64, and that backfired - attempting to read from our
ceph cluster triggers an immediate crash.

The behaviour of crashing on cephFS access starts at 3.18.30-20 in the CBS kernels.

Meanwhile, 3.18.25-20 crashes early at boot, failing to mount the root
filesystem (so I don't know if the Ceph crash happens at this kernel version).

I'm leaving the system live now at 3.18.25-19.  Assuming this hasn't introduced
some additional problem(s), it will be a while before we know if this has
reduced or eliminated the crashes we are experiencing.

-Wayne