Commit abdeef3b authored by Gioh Kim's avatar Gioh Kim Committed by Jason Gunthorpe
Browse files

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: default avatarGioh Kim <gi-oh.kim@ionos.com>
Signed-off-by: default avatarJack Wang <jinpu.wang@ionos.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent cc85392b

Documentation/ABI/testing/sysfs-class-rtrs-client

+12 −0
Original line number Diff line number Diff line
@@ -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/<session-name>/paths/

Date:		Feb 2020

KernelVersion:	5.7
@@ -95,6 +98,15 @@ KernelVersion: 5.7 
Contact:	Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>

Description:	RO, Contains the destination address of the path



What:		/sys/class/rtrs-client/<session-name>/paths/<src@dst>/cur_latency

Date:		Feb 2020

KernelVersion:	5.7

Contact:	Jack Wang <jinpu.wang@cloud.ionos.com> Danil Kipnis <danil.kipnis@cloud.ionos.com>

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/<session-name>/paths/<src@dst>/stats/reset_all

Date:		Feb 2020

KernelVersion:	5.7