On 02/24/2015 10:12 PM, Brian Bockelman wrote:
>>> By making it a separate source RPM, it makes it easier for everything to live happily in a single repo.
>> This would not work if the CEPH guys decide to provide in their own repo something that bot the plugin and the daemon would use. The daemon would be compiled against one version, the plugin against another. This would cause undebuggable ABI related crashes. This is probably something we do not want.
> Yes - but, in that case, I would suspect that they have ABI breaks in very low-level libraries, right?
> Sounds very scary to me. I guess Ceph could be a scary system?
I am only mentioning this because we have already seen it. There was
an ABI break in LevelDB that took a long time to figure out and it
crashed EOS disk servers. This was a pretty similar problem to the one
described above. It's not a huge leap for them to want ie. an upgraded
openssl and then we're toast, and likely we won't even notice until it's
too late.
Lukasz
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