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Bug 1484431

Summary: iSER multipath broken after iSCSI refactoring
Product: Red Hat OpenStack Reporter: Gorka Eguileor <geguileo>
Component: python-os-brickAssignee: Gorka Eguileor <geguileo>
Status: CLOSED ERRATA QA Contact: Avi Avraham <aavraham>
Severity: medium Docs Contact:
Priority: medium    
Version: 11.0 (Ocata)CC: apevec, ccollett, jschluet, lhh, pgrist, tshefi
Target Milestone: ---Keywords: OtherQA, Triaged, ZStream
Target Release: 11.0 (Ocata)Flags: tshefi: automate_bug-
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: python-os-brick-1.11.0-4.el7ost Doc Type: Bug Fix
Doc Text:
iSCSI session parsing has bugs that affect the attach/detach mechanism, since they were only looking at tcp sessions. Previously, these bugs were not a problem, but with the refactoring of iSCSI connections on os-brick, we began relying more heavily on the iSCSI session parsing. As a result, it was not possible to attach volumes that use iSER protocol. This update includes iSER sessions when checking existing sessions, so attach and detach now work for iSER connections.
Story Points: ---
Clone Of:
: 1484496 (view as bug list) Environment:
Last Closed: 2017-10-31 17:37:35 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1484496    

Description Gorka Eguileor 2017-08-23 14:52:53 UTC
When we refactored iSCSI connections on os-brick we began relying more heavily on the iSCSI session parsing, which had some bugs that didn't affect the attach/detach mechanism before but they do now, since they were only looking at tcp sessions.

We need to look at iser sessions as well.

Comment 2 Tzach Shefi 2017-09-28 09:34:40 UTC
Setting OtherQA, no Mellanox backend to test with. 

With Gorka's help
Based on the different code paths that OS-Brick takes to attach volumes we can categorize Cinder backend drivers into 3 categories:
Non discovery backends: Such as Pure, XtremIO
Discovery backends: Such as Kaminario
iSER backends: Such as Mellanox     -> we don't have such a backend can't verify.

Comment 3 Tzach Shefi 2017-10-02 10:31:36 UTC
See ^ #2 no backend to test iSER, setting no automation.

Comment 5 errata-xmlrpc 2017-10-31 17:37:35 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2017:3098