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Bug 2218741

Summary: Add support in multipathd for NVMe to listen for FPIN-Li events and mark effected paths as marginal
Product: Red Hat Enterprise Linux 8 Reporter: MUNEENDRA (Broadcom) <muneendra.kumar>
Component: device-mapper-multipathAssignee: Ben Marzinski <bmarzins>
Status: CLOSED MIGRATED QA Contact: Lin Li <lilin>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 8.10CC: agk, bmarzins, heinzm, lilin, msnitzer, prajnoha, zkabelac
Target Milestone: rcKeywords: MigratedToJIRA
Target Release: ---Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
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Last Closed: 2023-09-21 19:42:31 UTC Type: Bug
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

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

Comment 1 RHEL Program Management 2023-09-21 19:39:29 UTC
Issue migration from Bugzilla to Jira is in process at this time. This will be the last message in Jira copied from the Bugzilla bug.