I am doing the tests on real hardware, too (now). And I see some issues with the Quantal kernel (at least) if that is set to cfq. So I think there are two issues at least. One which I am currently trying to bisect between 3.3-rc7 and 3.3 which would make things work at least slow(er) and the other thing to figure out after that.
Btw, I think you get slightly better results as the devstack case as you create non-persistent snapshots with a bigger chunk size. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1023755 Title: Precise kernel locks up while dd to /dev/mapper files > 1Gb (was: Unable to delete volume) To manage notifications about this bug go to: https://bugs.launchpad.net/cinder/+bug/1023755/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
