mysql error "[Warning] WSREP: Failed to report last committed ... (Interrupted system call)"

[Leontii Istomin]

during rally tests we have found the follwing in mysql/error.log on each controller node: http://paste.openstack.org/show/406384/

Have found big load of disk subsystem
on node-39 at 29 17:41:01: http://paste.openstack.org/show/406433/
on node-39 at 29 13:00:21: http://paste.openstack.org/show/406439/
on node-39 at 29 18:31:01: http://paste.openstack.org/show/406440/
on node-39 at 29 18:41:21: http://paste.openstack.org/show/406442/
on node-39 at 29 19:11:21: http://paste.openstack.org/show/406443/
on node-39 at 29 19:21:21: http://paste.openstack.org/show/406444/
on node-2 at 30 07:36:01: http://paste.openstack.org/show/406446/
on node-33 at 30 07:36:02: http://paste.openstack.org/show/406447/
on node-39 at 30 07:36:01: http://paste.openstack.org/show/406448/

This behavior doesn't affect cluster.

Cluster configuration:
Baremetal,Ubuntu,IBP,HA, Neutron-vlan,Ceph-all,Nova-debug,Nova-quotas,Sahara,Murano,7.0-98
Controllers:3 Computes+Ceph:47

Disks and partitions on controller nodes: http://paste.openstack.org/show/406456/

api: '1.0'
astute_sha: 34e0493afa22999c4a07d3198ceb945116ab7932
auth_required: true
build_id: 2015-07-27_09-24-22
build_number: '98'
feature_groups:
- mirantis
fuel-agent_sha: 2a65f11c10b0aeb5184247635a19740fc3edde21
fuel-library_sha: 39c3162ee2e2ff6e3af82f703998f95ff4cc2b7a
fuel-ostf_sha: 94a483c8aba639be3b96616c1396ef290dcc00cd
fuelmain_sha: 921918a3bd3d278431f35ad917989e46b0c24100
nailgun_sha: d5c19f6afc66b5efe3c61ecb49025c1002ccbdc6
openstack_version: 2015.1.0-7.0
production: docker
python-fuelclient_sha: 58c411d87a7eaf0fd6892eae2b5cb1eff4190c98
release: '7.0'

Diagnostic Snapshot: http://mos-scale-share.mirantis.com/fuel-snapshot-2015-07-30_09-14-44.tar.xz

[Sergii Golovatiuk (sgolovatiuk)]

This bug is in galera itself https://github.com/codership/galera/issues/229. However, I was not able to reproduce it.

[Dina Belova (dbelova)]

Let's go back to this issue in 8.0. As this thing does not affect cluster behaviour, it won't be fixed in 7.0 anyway due to current timeframe. Let it be confirmed by default for 8.0

[Matthew Mosesohn (raytrac3r)]

Moving to low. Nothing is broken and there doesn't appear to be much we can do in this bug in library. Moving to mos-linux team to see if there are update candidates that might be appropriate. If not, this bug should be marked wontfix (and not passed back to Fuel Library)

[Dmitry Teselkin (teselkin-d)]

According to bug [1] it should be fixed in 3.9
We use galera built from revision 8182fa6 [2]. It bumps galera version to 3.10, so it seems the fix should be included.
Moving to won't fix.

[1] https://github.com/codership/galera/issues/229
[2] https://github.com/codership/galera/commit/8182fa6