Hi Sage, On Fri, 2008-10-24 at 11:33 -0700, Sage Weil wrote: > The next step to growing the cluster is to expand the CRUSH map to > actually allocate data to those OSDs. That part is a bit more > involved, > as it should involve some planning as far as if and how you'll be > breaking > up the OSD cluster into failure domains, and what kind of future > growth > you expect. > > 1 - Grab and decompile the current CRUSH map with > > ./cmonctl osd getcrushmap -o cm > ./crushtool -d cm > cm.txt > > 2 - Edit cm.txt to your liking > > 3 - Profit! > ./crushtool -c cm.txt -o cm > ./cmonctl osd setcrushmap -i cm > > As always, step 2 is the tricky part. The easiest thing is to make > the > single bucket use 'alg straw' and stick all of the devices in there, > as > straw buckets give you the least data movement when adding/removing > devices. The downside is that it's a slower mapping calculation, but > for > smallish clusters (<= 50 osds) that shouldn't be a problem.
Makes sense... and worked like a charm! Can't wait to hear the "Stable" proclamation for ceph. I'll even accept "Stable Enough". Thanks for such a quick response! Brian ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Ceph-devel mailing list Ceph-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ceph-devel
