Hi! When running a RAID check via: $ echo check > /sys/block/md127/md/sync_action The underlying system, especially a Linux container, becomes barely usable. Webservers run into timeouts etc. In top I see that md127_raid6 is run at priority 20. However some (10+) other kworker processes do not and run at priority -20 and consume a siginificant amount of sys CPU usage while the RAID check is in progress. Are there any suggested ways to tune/fix the priorization issue I'm having? The setup I'm having here is pretty low-cost, low-power. A Pi3 with 64 bit kernel, 5 SATA drives connected via USB, configured as RAID6. Regards, Linus -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
