- **status**: assigned --> fixed
---
** [tickets:#3330] imm: immnd crashes due to NFS state unsynced**
**Status:** fixed
**Milestone:** 5.23.03
**Created:** Mon Feb 13, 2023 06:36 AM UTC by PhanTranQuocDat
**Last Updated:** Mon Feb 13, 2023 07:31 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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