[CentOS-devel] drbd83 update + no kmod update = broken server
ajb at elrepo.org
Fri Sep 11 15:29:44 UTC 2009
On 11/09/2009, Akemi Yagi <amyagi at gmail.com> wrote:
> On Fri, Sep 11, 2009 at 4:46 AM, Johnny Hughes <johnny at centos.org> wrote:
> > Also, there is NO conflict or problem having both modules installed.
> True (as I mentioned in my earlier post). But see below...
> > Also, ALSO :D, I published an article on how to upgrade DRBD here:
> > http://centosnow.blogspot.com/2009/08/drbd-packages-in-centos-4-and-centos-5.html
> This is a must-read. You should advertise it in more places. :-D
> > So, I do not agree that kmod needs to obsolete the older one. I think
> > that having the older kmod there in case you need to boot into the older
> > kernel is not bad.
> That is the statement I have difficulty understanding. :) In case you
> need to boot into the older kernel ... the drbd module from -83 should
> be there as a symlink. Or, if you mean boot into the older kernel to
> get drbd.ko *82*, then you would have to reinstall drbd82.
> In other words, if drbd83 obsoletes drbd82, there is no merit for
> still having drbd.ko (82) around because drbd82 gets removed upon the
> 82 -> 83 upgrade. If someone needs to go back to the 82, he needs to
> manually install drbd82 anyway. (hope I'm making sense here) :-)
> One (minor) drawback of keeping both kmods is that each time
> /sbin/meak-module is run, it has to do extra work going through all
> installed kernels, once for kmod-drbd82 and another time for
> - now completely hiding under a huge rock
A question in two parts -- for Akemi to consider:
Are the kmod-drbd* packages kABI tracking? Or are they kernel version dependant?
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