Bug 1484431 - iSER multipath broken after iSCSI refactoring
Summary: iSER multipath broken after iSCSI refactoring
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: python-os-brick
Version: 11.0 (Ocata)
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
: 11.0 (Ocata)
Assignee: Gorka Eguileor
QA Contact: Avi Avraham
URL:
Whiteboard:
Depends On:
Blocks: 1484496
TreeView+ depends on / blocked
 
Reported: 2017-08-23 14:52 UTC by Gorka Eguileor
Modified: 2020-12-14 09:40 UTC (History)
6 users (show)

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.
Clone Of:
: 1484496 (view as bug list)
Environment:
Last Closed: 2017-10-31 17:37:35 UTC
Target Upstream Version:
Embargoed:
tshefi: automate_bug-

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Launchpad 1710599 0 None None None 2017-08-23 14:52:52 UTC
OpenStack gerrit 496737 0 None MERGED Fix iSCSI volume attachment over RDMA transport 2020-03-04 03:54:14 UTC
Red Hat Product Errata RHBA-2017:3098 0 normal SHIPPED_LIVE Red Hat OpenStack Platform 11.0 director Bug Fix Advisory 2017-10-31 21:33:28 UTC

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
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