On Wed, Feb 13, 2013 at 12:22 AM, Stefan Priebe <s.priebe@xxxxxxxxxxxx> wrote: > Hi, > > is there a speed limit option for rbd export? Right now i'm able to produce > several SLOW requests from IMPORTANT valid requests while just exporting a > snapshot which is not really important. > > rbd export runs with 2400MB/s and each OSD with 250MB/s so it seems to block > valid normal read / write operations. > > Greets, > Stefan > -- Can confirm this in some specific case - when 0.56.2 and 0.56.3 coexist for a long time, nodes with newer running version can produce such warnings at the beginning of export huge snapshots, not during entire export. And there are real impact on clients - for example I can see messages from watchdog in the KVM guests. For now, I will do an input throttling on export as temporary workaround. -- 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
