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authorGioh Kim <gi-oh.kim@ionos.com>2021-04-07 13:34:44 +0200
committerJason Gunthorpe <jgg@nvidia.com>2021-04-13 19:44:54 -0300
commitabdeef3b2388385e142d90f1d0359aa3b11ac5e6 (patch)
treefd11107ce3b7e775e6889f09228f1791cdd5e1ed
parentcc85392bcd27f619a77a953e384998ce413f197b (diff)
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 <gi-oh.kim@ionos.com> Signed-off-by: Jack Wang <jinpu.wang@ionos.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
-rw-r--r--Documentation/ABI/testing/sysfs-class-rtrs-client12
1 files changed, 12 insertions, 0 deletions
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/<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