Hi. Is runtime enabling/disabling of blk-mq supported? Doesn't seem to work here: 4.1.30 (but the same thing on 4.6.3): # zcat /proc/config.gz |grep _MQ_DEF # CONFIG_SCSI_MQ_DEFAULT is not set # CONFIG_DM_MQ_DEFAULT is not set # cat /sys/module/scsi_mod/parameters/use_blk_mq N # grep "" /sys/block/sd*/queue/scheduler /sys/block/sda/queue/scheduler:noop [deadline] cfq /sys/block/sdb/queue/scheduler:noop [deadline] cfq /sys/block/sdc/queue/scheduler:noop [deadline] cfq /sys/block/sdd/queue/scheduler:noop [deadline] cfq /sys/block/sde/queue/scheduler:noop [deadline] cfq /sys/block/sdf/queue/scheduler:noop [deadline] cfq /sys/block/sdg/queue/scheduler:noop [deadline] cfq # echo Y > /sys/module/scsi_mod/parameters/use_blk_mq # cat /sys/module/scsi_mod/parameters/use_blk_mq Y # grep "" /sys/block/sd*/queue/scheduler /sys/block/sda/queue/scheduler:noop [deadline] cfq /sys/block/sdb/queue/scheduler:noop [deadline] cfq /sys/block/sdc/queue/scheduler:noop [deadline] cfq /sys/block/sdd/queue/scheduler:noop [deadline] cfq /sys/block/sde/queue/scheduler:noop [deadline] cfq /sys/block/sdf/queue/scheduler:noop [deadline] cfq /sys/block/sdg/queue/scheduler:noop [deadline] cfq so use_blk_mq is Y but queue/scheduler for existing devices still contains I/O schedulers and shows deadline as active. Looks like blk-mq is not active. -- Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org ) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
