| # We aren't adding devices skip the elevator check |
| ACTION!="add", GOTO="sched_out" |
| |
| SUBSYSTEM!="block", GOTO="sched_out" |
| ENV{DEVTYPE}!="disk", GOTO="sched_out" |
| |
| # Technically, dm-multipath can be configured to use an I/O scheduler. |
| # However, there are races between the 'add' uevent and the linking in |
| # of the queue/scheduler sysfs file. For now, just skip dm- devices. |
| KERNEL=="dm-*|md*", GOTO="sched_out" |
| |
| # Skip bio-based devices, which don't support an I/O scheduler. |
| ATTR{queue/scheduler}=="none", GOTO="sched_out" |
| |
| # If elevator= is specified on the kernel command line, change the |
| # scheduler to the one specified. |
| IMPORT{cmdline}="elevator" |
| ENV{elevator}!="", ATTR{queue/scheduler}="$env{elevator}" |
| |
| LABEL="sched_out" |