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Bug 1887400 - quorum: Add support for nodelist callback (was dlm: gfs2 corruption when nodes rejoin too quickly)
Summary: quorum: Add support for nodelist callback (was dlm: gfs2 corruption when nod...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: corosync
Version: 8.3
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: rc
: 8.0
Assignee: Jan Friesse
QA Contact: cluster-qe@redhat.com
URL:
Whiteboard:
Depends On:
Blocks: 1866905
TreeView+ depends on / blocked
 
Reported: 2020-10-12 11:29 UTC by Jan Friesse
Modified: 2021-05-18 15:26 UTC (History)
10 users (show)

Fixed In Version: corosync-3.1.0-1.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1866905
Environment:
Last Closed: 2021-05-18 15:26:09 UTC
Type: Bug
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 3667531 0 None None None 2020-10-12 14:21:29 UTC
Red Hat Knowledge Base (Solution) 5280531 0 None None None 2020-10-12 14:21:45 UTC

Comment 1 Jan Friesse 2020-10-12 11:33:54 UTC
Upstream patch https://github.com/corosync/corosync/commit/4eb36297288f65fe26d2adedf6c33aced7544976

For QA: Not sure how to test this feature alone. It's just a new API.

Comment 5 Patrik Hagara 2020-11-09 12:36:18 UTC
New API tested using the provided upstream unit test program:

> [root@virt-248 ~]# rpm -q corosync
> corosync-3.1.0-1.el8.x86_64
> [root@virt-248 ~]# cd bz1887400-testapp
> [root@virt-248 bz1887400-testapp]# ./testquorummodel
> quorate   1
> Waiting for quorum events, press ^C to finish
> -------------------
> nodelist notification called
>   ring id            = 1.2c
>   num members        = 5  1 2 3 4 5
>   num joined members = 0
>   num left members   = 0
> quorum notification called
>   quorate   = 1
>   ring id   = 1.2c
>   num nodes = 5  1 2 3 4 5


Stop cluster on another node:

> nodelist notification called
>   ring id            = 1.30
>   num members        = 4  1 3 4 5
>   num joined members = 0
>   num left members   = 1  2
> quorum notification called
>   quorate   = 1
>   ring id   = 1.30
>   num nodes = 4  1 3 4 5


Start the cluster on the node again:

> nodelist notification called
>   ring id            = 1.35
>   num members        = 5  1 2 3 4 5
>   num joined members = 1  2
>   num left members   = 0
> quorum notification called
>   quorate   = 1
>   ring id   = 1.35
>   num nodes = 5  1 2 3 4 5

The list of current/joined/left nodes is passed via the new nodelist notification callback API.

Moving to verified.

Comment 7 errata-xmlrpc 2021-05-18 15:26:09 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 (corosync bug fix and enhancement update), 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-2021:1780


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