Clustermap summary

[souravgupta-msft]

Type of Change

• Bug fix
• New feature
• Code quality improvement
• Other (describe):

Description

Get clustermap summary by doing read on fs=debug/cluster-summary path. Sample output for this is,

user@user-vm:~$ cat mntdir/fs=debug/cluster-summary
{
  "timestamp": "2025-10-23T08:40:05Z",
  "nodes_summary": {
    "count": 1,
    "offline": 0,
    "nodes": [
      {
        "node_id": "9b201668-e71f-422c-b2e9-b66bda2343eb",
        "ip_addr": "xxx.xx.xxx.xxx",
        "hostname": "user-vm",
        "status": "online",
        "last_heartbeat": "2025-10-23T08:40:04Z"
      }
    ]
  },
  "rvs_summary": {
    "count": 1,
    "online": 1,
    "offline": 0
  },
  "mvs_summary": {
    "count": 1,
    "online": 1,
    "offline": 0,
    "degraded": 0,
    "syncing": 0
  }
}