Hi. To set parameters I used this udev rule /etc/udev/rules.d/70-bcache-tuning.rules SUBSYSTEM!="block", GOTO="end_rule" ENV{DEVTYPE}=="partition", GOTO="end_rule" ACTION!="add|change", GOTO="end_rule" KERNEL=="bcache*", ATTR{bcache/sequential_cutoff}="300000000" LABEL="end_rule" gdb