|sub-io for a stripe. |
|Linkage into a list (hanging off lov_io::lis_active) of all sub-io's active for the current IO iteration. |
|true, iff cl_io_init() was successfully executed against lov_io_sub::sub_io. |
|True, iff lov_io_sub::sub_io and lov_io_sub::sub_env weren't allocated, but borrowed from a per-device emergency pool. |
|environment, in which sub-io executes. |
|environment's refcheck. |
sub-io for a stripe.
Ideally sub-io's can be stopped and resumed independently, with lov acting as a scheduler to maximize overall throughput.