Hi, I'd like you to take a look at this patch for potential DocImpact. https://review.openstack.org/33950 Log: commit 12d9c93cf76b0231985e7d6afcf97e59d73ed526 Author: Qiu Yu <unicell at gmail.com> Date: Fri Jun 21 19:10:42 2013 +0800 Add AggregateDiskFilter Implements blueprint per-aggregate-resource-ratio * AggregateDiskFilter to support per-aggregate disk_allocation_ratio * Falls back to global setting if per-aggregate value not found DocImpact Change-Id: I441bb962aee715bab829991519c7233ffefa4bbb Automatically generated bug (please review): https://bugs.launchpad.net/bugs/1193313