- **summary**: imm: Ccb state unsynced after split-brain --> imm: immnd crashes
due to NFS state unsynced
- Description has changed:
Diff:
~~~~
--- old
+++ new
@@ -1,4 +1,4 @@
-There's a case when ccb state from some nodes un-synced after split-brain. The
root cause is due to notification of FS availability is not sent to all nodes
during disconnection among nodes(e.g. Split-brain, …). This makes ccb
processing in each nodes behave differently as they received different
information.
+There's a case when ccb state from some nodes un-synced during nodes losing
connection with each other. The root cause is due to notification of FS
availability is not sent to all nodes during disconnection among nodes(e.g.
Split-brain, …). This makes ccb processing in each nodes behave differently as
they received different information.
Steps to reproduce
------------------
- Split cluster into partitions or power off some nodes
~~~~
---
** [tickets:#3330] imm: immnd crashes due to NFS state unsynced**
**Status:** assigned
**Milestone:** 5.23.03
**Created:** Mon Feb 13, 2023 06:36 AM UTC by PhanTranQuocDat
**Last Updated:** Mon Feb 13, 2023 06:36 AM UTC
**Owner:** PhanTranQuocDat
There's a case when ccb state from some nodes un-synced during nodes losing
connection with each other. The root cause is due to notification of FS
availability is not sent to all nodes during disconnection among nodes(e.g.
Split-brain, …). This makes ccb processing in each nodes behave differently as
they received different information.
Steps to reproduce
------------------
- Split cluster into partitions or power off some nodes
- Use cmd: "immadm -o 400 safRdn=immManagement,safApp=safImmService" on a
partition or alive nodes to notify IMM "FS unavailable". Only nodes maintaining
connection with each other will receive this notification.
- Merge network/Power on nodes.
- Change attribute's value of an object (object must associate with an
implementer).
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