From abdeef3b2388385e142d90f1d0359aa3b11ac5e6 Mon Sep 17 00:00:00 2001 From: Gioh Kim Date: Wed, 7 Apr 2021 13:34:44 +0200 Subject: Documentation/ABI/rtrs-clt: Add descriptions for min-latency policy Describe new multipath policy min-latency of the RTRS client. Link: https://lore.kernel.org/r/20210407113444.150961-5-gi-oh.kim@ionos.com Signed-off-by: Gioh Kim Signed-off-by: Jack Wang Signed-off-by: Jason Gunthorpe --- Documentation/ABI/testing/sysfs-class-rtrs-client | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'Documentation/ABI') diff --git a/Documentation/ABI/testing/sysfs-class-rtrs-client b/Documentation/ABI/testing/sysfs-class-rtrs-client index 0f7165aab251..49a4157c7bf1 100644 --- a/Documentation/ABI/testing/sysfs-class-rtrs-client +++ b/Documentation/ABI/testing/sysfs-class-rtrs-client @@ -34,6 +34,9 @@ Description: Multipath policy specifies which path should be selected on each IO min-inflight (1): select path with minimum inflights. + min-latency (2): + select path with minimum latency. + What: /sys/class/rtrs-client//paths/ Date: Feb 2020 KernelVersion: 5.7 @@ -95,6 +98,15 @@ KernelVersion: 5.7 Contact: Jack Wang Danil Kipnis Description: RO, Contains the destination address of the path +What: /sys/class/rtrs-client//paths//cur_latency +Date: Feb 2020 +KernelVersion: 5.7 +Contact: Jack Wang Danil Kipnis +Description: RO, Contains the latency time calculated by the heart-beat messages. + Whenever the client sends heart-beat message, it checks the time gap + between sending the heart-beat message and receiving the ACK. + This value can be changed regularly. + What: /sys/class/rtrs-client//paths//stats/reset_all Date: Feb 2020 KernelVersion: 5.7 -- cgit