cubefs/docs/source/dev-guide/admin-api/master/data-partition.md

Data Shard Management

Create

curl -v "http://10.196.59.198:17010/dataPartition/create?count=400&name=test"

Creates a specified number of data shards.

Parameter List

Parameter	Type	Description
count	int	Number of data shards to create
name	string	Volume name

Query

curl -v "http://10.196.59.198:17010/dataPartition/get?id=100"  | python -m json.tool

Displays detailed information about the data shard, including the number of replicas, volume information, etc.

Parameter List

Parameter	Type	Description
id	uint64	Data shard ID

Response Example

{
    "PartitionID": 100,
    "LastLoadedTime": 1544082851,
    "ReplicaNum": 3,
    "Status": 2,
    "Replicas": {},
    "Hosts": {},
    "Peers": {},
    "Zones": {},
    "MissingNodes": {},
    "VolName": "test",
    "VolID": 2,
    "FileInCoreMap": {},
    "FilesWithMissingReplica": {}
}

Decommission Replica

curl -v "http://10.196.59.198:17010/dataPartition/decommission?id=13&addr=10.196.59.201:17310&weight=2"

Removes a replica of the data shard and creates a new replica.

Parameter List

Parameter	Type	Description
id	uint64	Data shard ID
addr	string	Address of the replica to be removed
weight	int	Decommission weight, default is 2

Compare Replica Files

curl -v "http://10.196.59.198:17010/dataPartition/load?id=1"

Sends a task to compare the replica files for each replica of the data shard, and then asynchronously checks whether the file CRC on each replica is consistent.

Parameter List

Parameter	Type	Description
id	uint64	Data shard ID