Okay, it's trivial to change 'pool' to 'root' in the default generated
crush map, and update all the docs accordingly. The problem is that some
stuff built on top of ceph has 'pool=default' in there, including our chef
cookbooks and those that other people are building.
I see a few options:
1) - Document that pool=default should be used for clusters created
pre-0.52, and root=default for clusters created after that (at
http://ceph.com/docs/...).
- Tell new tools to use root=default
- Encourage existing tools to use *both* root=default pool=default (if
the type is not present, it will be ignored). They will break on
newly created clusters with new code, but it will at least happen
quickly (on cluster creation).
- Make noise in the release notes+announcement.
2) Make 'pool' be silently translated to 'root' (and the other way around)
if the type is not present. That way new tools with old clusters will
work, and new clusters with old automation will work.
Other ideas? I don't much like #2.
sage
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