On 01/31/2013 05:43 AM, Sage Weil wrote: > Hi- > > Can you reproduce this with logs? It looks like there are a few ops that > are hanging for a very long time, but there isn't enough information here > except to point to osds 610, 612, 615, and 68... FWIW, I have a small pile of disks with bad sections in them - these sections aren't bad enough that writes fail, but they are bad enough that throughput drops by a factor of ~20. Do OSDs already collect statistics on, say, op commit elapsed time (assuming that's the statistic most directly related to slow writes on only some sections of a disk), in a way that could be used to diagnose such disks? If not, is there enough structure already in place that it would be easy to add? -- Jim > > thanks! > s -- 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
