>>> Lars Marowsky-Bree <[email protected]> schrieb am 05.02.2014 um 15:11 in
Nachricht
<[email protected]>:
> On 2014-02-05T15:06:47, Ulrich Windl <[email protected]>
wrote:
>
>> I guess the kernel update is more common than the "just the ocfs2-kmp
update"
>
> Well, some customers do apply updates in the recommended way, and thus
> don't encounter this ;-) In any case, since at this time the cluster
> services are already stopped, at least the service impact is minimal.
>
>> > This would avoid this error too. Or keeping multiple kernel versions in
>> > parallel (which also helps if a kernel update no longer boots for some
>> > reason). Removing the running kernel package is usually not a great
>> > idea; I prefer to remove them after having successfully rebooted only,
>> > because you *never* know if you may have to reload a module.
>>
>> There's another way: (Like HP-UX learned to do it): Defer changes to the
>> running kernel until shutdown/reboot.
>
> True. Hence: activate multi-versions for the kernel in
> /etc/zypp/zypp.conf and only remove the old kernel after the reboot. I
> do that manually, but I do think we even have a script for that
> somewhere. I honestly don't remember where though; I like to keep
> several kernels around for testing anyway.
>
> I think this is the default going forward, but as always: zypper gained
> this ability during the SLE 11 cycle, and we couldn't just change
> existing behaviour in a simple update, it has to be manually
> activated.
I did a quick check: It seems only "ocf:ocfs2:o2cb" does sucj (IMHO) nonsense
like removing a module on stop (I can guess it's a leftover from o2cb module
hacking when the developer was too lazy to remove the module by hand when
wanting to try a newer version):
--
# egrep 'modprobe|rmmod' /usr/lib/ocf/resource.d/*/*
/usr/lib/ocf/resource.d/heartbeat/drbd: do_cmd modprobe -s drbd `$DRBDADM
sh-mod-parms` || {
/usr/lib/ocf/resource.d/heartbeat/iface-vlan: error="$(modprobe
8021q 2>&1)"
/usr/lib/ocf/resource.d/linbit/drbd: do_cmd modprobe -s drbd
`$DRBDADM sh-mod-parms` || {
/usr/lib/ocf/resource.d/ocfs2/o2cb: modprobe -rs "$FSNAME"
/usr/lib/ocf/resource.d/ocfs2/o2cb: modprobe -rs "$MODNAME"
/usr/lib/ocf/resource.d/ocfs2/o2cb: modprobe -s ocfs2_stackglue
/usr/lib/ocf/resource.d/ocfs2/o2cb: modprobe -s ocfs2_stack_user
/usr/lib/ocf/resource.d/ocfs2/o2cb: modprobe -s ocfs2
/usr/lib/ocf/resource.d/pacemaker/controld: modprobe configfs
/usr/lib/ocf/resource.d/pacemaker/controld: modprobe dlm
--
Regards,
Ulrich
>
>
> Regards,
> Lars
>
> --
> Architect Storage/HA
> SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer,
> HRB 21284 (AG Nürnberg)
> "Experience is the name everyone gives to their mistakes." -- Oscar Wilde
>
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