James, This is the right way to think about the problem. I have more specific comments in the script, but just wanted to let you know this is a great start.
Thanks! On Wed, Nov 27, 2013 at 7:42 AM, James <[email protected]> wrote: > Hi, > > This is along the lines of "tools for sysadmins". I plan on using > these algorithms for puppet-gluster, but will try to maintain them > separately as a standalone tool. > > The problem: Given a set of bricks and servers, if they have a logical > naming convention, can an algorithm decide the ideal order. This could > allow parameters such as replica count, and > chained=true/false/offset#. > > The second problem: Given a set of bricks in a volume, if someone adds > X bricks and removes Y bricks, is this valid, and what is the valid > sequence of add/remove brick commands. > > I've written some code with test cases to try and figure this all out. > I've left out a lot of corner cases, but the boilerplate is there to > make it happen. Hopefully it's self explanatory. (gluster.py) Read and > run it. > > Once this all works, the puppet-gluster use case is magic. It will be > able to take care of these operations for you (if you want). > > For non puppet users, this will give admins the confidence to know > what commands they should _probably_ run in what order. I say probably > because we assume that if there's an error, they'll stop and inspect > first. > > I haven't yet tried to implement the chained cases, or anything > involving striping. There are also some corner cases with some of the > current code. Once you add chaining and striping, etc, I realized it > was time to step back and ask for help :) > > I hope this all makes sense. Comments, code, test cases are appreciated! > > Cheers, > > James > @purpleidea (irc/twitter) > https://ttboj.wordpress.com/ > > _______________________________________________ > Gluster-users mailing list > [email protected] > http://supercolony.gluster.org/mailman/listinfo/gluster-users >
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