Bug 2218741 - Add support in multipathd for NVMe to listen for FPIN-Li events and mark effected paths as marginal
Summary: Add support in multipathd for NVMe to listen for FPIN-Li events and mark effe...
Keywords:
Status: NEW
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: device-mapper-multipath
Version: 8.10
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Ben Marzinski
QA Contact: Lin Li
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-06-30 05:33 UTC by MUNEENDRA (Broadcom)
Modified: 2023-07-17 15:15 UTC (History)
7 users (show)

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System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker RHELPLAN-161257 0 None None None 2023-06-30 05:34:53 UTC

Description MUNEENDRA (Broadcom) 2023-06-30 05:33:33 UTC 
Description of problem:
Needs to add a support to Handle FPIN-li events for NVMe in multipathd.
At present we have the support for only scsi devices(EP).

When link integrity issues are detected on a Fibre Channel fabric,
A Link Integrity Fabric Performance Impact Notification (FPIN-Li) can be send to a node. 
If multipathd listens for these events, it can use them to control a path's marginal status, 
instead of trying to detect marginal paths internally. 
The path will remain marginal until a registered state change notification (RSCN) or Link Up event is received.


Version-Release number of selected component (if applicable):
RHEL8.10



Actual results:
Multipathd has a more robust method of detecting marginal paths on Fibre Channel fabrics that can issue PFIN-Li events.


Additional info:
This feature which support scsi  is already part of RHEL9.0  and RHEL8.7
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