Recover isolated OSDs in distributed storage

Environment

• Product: ZCF
• Component: ZCE-X
• Affected objects: ZCE-X, ZStack Cloud, Ceph, Postgres, ES and ETCD, ant-queen, and isolated OSDs
• Versions: ZCE-X 6.4.100.3 and ZStack Cloud 5.3.28 kylin sp3
• Trigger condition: Isolated OSD disks in production must be recovered after confirming environment health and the data recovery policy.

Symptoms

• The environment contains isolated OSD disks.
• In this scenario, isolation can be removed from all 3 disks at once.
• Continuously monitor Ceph to avoid affecting workloads or data consistency.

Diagnosis

1. Confirm that the Ceph cluster is OK.
2. Confirm matching Postgres primary and secondary LSN values and Diff=0.