I'm seeing an odd behavior after updating to kernel 3.13.5-202.fc20.x86_64 from 3.12.7-300.fc20.x86_64.
I have a bcache device (bcache2) which backs a raid5 array (md2) that has 160+MB of dirty data. The dirty data is being written at a rate of 1 page per second (8 sectors). At this rate it'll take 11 hrs to finish. I like to keep this array spun down when inactive but the drives can't spin down since they're being written to once a second. # cat /sys/block/bcache2/bcache/writeback_rate 512 # cat /sys/block/bcache2/bcache/writeback_rate_debug rate: 512/sec dirty: 161M target: 40.8G proportional: -35.2M derivative: 0 change: -35.2M/sec next io: 624ms This never happened when running 3.12.7. Is there anything I can do about this? --Larkin -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
