On Sun, 22 May 2011, Fyodor Ustinov wrote: > Hi! > > Let's say I have 6 osd. 5 of them are the same, 6 - has twice the amount of > disk size. > > Should I somehow specifically describe it in CRUSH mapor seph will understand > without it? Right, you just need to weight it 2x that of the other nodes, and it'll get twice the data (and IO traffic). I just pushed a patch to master that will let you do it with something like ceph osd getcrushmap -o orig crushtool -i orig --reweight-item <name> <weight> -o new ceph osd setcrushmap -i new I usually set the weights in terms of some real units, like TB, so that the map dumps make sense. You probably want to crushtool -d orig > orig.txt crushtool -d new > new.txt diff orig.txt new.txt to verify all is well before reinserting the updated map into the cluster. sage -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
