On 5/7/2014 7:35 PM, Craig Lewis wrote: > Because of the very low recovery parameters, there's on a single > backfill running. `iostat -dmx 5 5` did report 100% util on the osd > that is backfilling, but I expected that. Once backfilling moves on to > a new osd, the 100% util follows the backfill operation. Non-TLER disks can get 100% utilization when they're trying to relocate bad sectors long enough. But I also get 100% utilization when e.g. running mkfs so it's not a very reliable indicator either -- just like smart and dmesg... Dima