US 2019/0199801 A1 · Lock Management Method in Cluster, Lock Server, and Client

Abstract

A lock management solution in a cluster, where the cluster includes a client and a lock server, the lock server includes an interface card and a memory, the memory stores a read lock request queue recording an identifier of a client waiting for a read lock or obtaining the read lock, the memory further stores a write lock request queue recording an identifier of a client waiting for a write lock or obtains the write lock, and the memory further includes a read lock allocation count and a write lock allocation identifier, where the read lock allocation count records an allocated read lock, and the write lock allocation identifier indicates whether the write lock has been allocated.

Claims20

Dependent claims

A lock server, applied to a cluster comprising a plurality of clients, the lock server comprising:

a memory configured to store a read lock request queue, the read lock request queue recording an identifier of a client in the cluster either that is in a read lock waiting state or that is obtaining a read lock for a shared resource, and a write lock allocation identifier indicating whether a write lock for the shared resource is allocated;
and
an interface card coupled to the memory and configured to:
receive a first read lock request carrying an identifier of a first client in the clients and a first memory address in the read lock request queue from the first client;
write the identifier of the first client into the first memory address in the read lock request queue;
and
send a first message carrying the write lock allocation identifier to the first client.

4 more elements

A lock management method for a cluster comprising a plurality of clients and a lock server, the lock server comprising an interface card and a memory, and the lock management method comprising:

storing, by the memory, a read lock request queue, the read lock request queue recording an identifier of a client in the cluster either that is in a read lock waiting state or that is obtaining a read lock for a shared resource, and a write lock allocation identifier indicating whether a write lock for the shared resource is allocated;
receiving, by the interface card, a first read lock request carrying an identifier of a first client in the clients and a first memory address in the read lock request queue from the first client;
writing, by the interface card, the identifier of the first client into the first memory address in the read lock request queue;
and
sending, by the interface card, a first message carrying the write lock allocation identifier to the first client.

2 more elements

A non-transitory computer readable storage medium comprising instructions, the instructions being executable by a computer processor to perform a lock management method, the instructions causing the computer processor to be configured to:

store a read lock request queue, the read lock request queue recording an identifier of a client in the cluster either that is in a read lock waiting state or that is obtaining a read lock for a shared resource, and a write lock allocation identifier indicating whether a write lock for the shared resource is allocated;
receive a first read lock request carrying an identifier of a first client in the clients and a first memory address in the read lock request queue from the first client;
write the identifier of the first client into the first memory address in the read lock request queue;
and
send a first message carrying the write lock allocation identifier to the first client.

2 more elements

Dependencies are inferred from the claim text.

Lock Management Method in Cluster, Lock Server, and Client

Life of this patent

Lock Management Method in Cluster, Lock Server, and Client

Life of this patent

Abstract

Claims20