On Mon, Nov 7, 2011 at 15:43, Gregory Farnum <gregory.farnum@xxxxxxxxxxxxx> wrote: > There are two different deadlock problems in this thread: sync > deadlock (due to syncs triggering a recursive sync call) versus memory > pressure writeout deadlock. > > The first is dealt with by using syncfs; the second is usually dealt > with by using a userspace client (because then the OS can swap the > userspace client memory to disk if necessary). Oh yes. So for the second part, Mandell needs to make sure he's using qemu-rbd and not rbd.ko (e.g. with Xen), and then with the right backing filesystem choice and new enough software, he should be safe. -- 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
