[MDEV-26918] mariabackup SST donor stuck in DONOR/DESYNCED state Created: 2021-10-27  Updated: 2022-01-14  Resolved: 2022-01-14

Status: Closed
Project: MariaDB Server
Component/s: Galera SST, mariabackup, wsrep
Affects Version/s: 10.6.4
Fix Version/s: N/A

Type: Bug Priority: Major
Reporter: Oli Sennhauser Assignee: Seppo Jaakola
Resolution: Duplicate Votes: 3
Labels: CS0371509, DONOR/DESYNCED, donor, sst
Environment:

CentOS Linux 8

Issue Links:
Relates
relates to MDEV-27459 SST works as expected on joiner node ... Closed

 Description   

We had a 5-node training Cluster with SST method set to rsync on all nodes. When we switched to SST method mariabackup with rolling cluster restart and forcing SST the donor node stuck in state DONOR/DESYNCED.

If the donor was restarted everything was fine again. This we could reproduce more or less several times...
The donor also found out of DONOR/DESYNCED state when any of the other nodes was stopped (restarted) (maybe this helps you finding the problem...)

 Comments   
Comment by Oli Sennhauser [ 2021-10-27 ]

This happened 3 times out of 4.

Comment by Gabor Orosz [ 2021-11-03 ]

Hi,

I think you are facing with the same issue that I observed before. I've attached my reproducer test case and a mitigation to handle the fault.
I tried to reach out the Galera folks via Github to get some suggestions, but no real advancement on that front.

Best regards,
GOro

Comment by Jan Lindström (Inactive) [ 2022-01-14 ]

Duplicate of MDEV-27459

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