Leasing scheme for data-modifying operations
First Claim
1. A method for performing a data-modifying operation in a file system that includes a plurality of servers that store replicas of data, one of the servers serving as a primary replica server for one of the replicas of data and at least one other one of the servers serving as at least one secondary replica server for the one replica of data, the method comprising:
- sending data associated with the data-modifying operation to the primary replica server and the at least one secondary replica server; and
sending a data-modifying control signal that requests execution of the data-modifying operation on the data associated with the data-modifying operation to the primary replica server and the at least one secondary replica server,where a sequence in which the data associated with the data-modifying operation is received at each of the primary replica server and the at least one secondary replica server is independent of a sequence in which the data-modifying control signal is received at each of the primary replica server and the at least one secondary replica server.
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Accused Products
Abstract
A system may facilitate performance of a data-modifying operation in a file network that includes multiple servers that store replicas of data. One of the servers may serve as a primary replica for one of the replicas of data and at least one other one of the servers may serve as at least one secondary replica for the replica of data. The system may send data associated with the data-modifying operation to the primary replica and the at least one secondary replica based on a network topology and independently send a data-modifying control signal that requests execution of the data-modifying operation using the data associated with the data-modifying operation to the primary replica and the at least one secondary replica.
121 Citations
22 Claims
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1. A method for performing a data-modifying operation in a file system that includes a plurality of servers that store replicas of data, one of the servers serving as a primary replica server for one of the replicas of data and at least one other one of the servers serving as at least one secondary replica server for the one replica of data, the method comprising:
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sending data associated with the data-modifying operation to the primary replica server and the at least one secondary replica server; and sending a data-modifying control signal that requests execution of the data-modifying operation on the data associated with the data-modifying operation to the primary replica server and the at least one secondary replica server, where a sequence in which the data associated with the data-modifying operation is received at each of the primary replica server and the at least one secondary replica server is independent of a sequence in which the data-modifying control signal is received at each of the primary replica server and the at least one secondary replica server. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for performing a data-modifying operation in a file network that includes a plurality of servers that store replicas of data, one of the servers serving as a primary replica server for one of the replicas of data and other ones of the servers serving as secondary replica servers for the one replica of data, the system comprising:
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means for pushing data associated with the data-modifying operation to the primary replica server and the secondary replica servers; and means for sending a data-modifying control signal to the primary replica server and the secondary replica servers, the data-modifying control signal requesting execution of the data-modifying operation on the data associated with the data-modifying operation, where the data associated with the data-modifying operation is pushed to the primary replica server and the secondary replica servers in an order independent of an order in which the data-modifying control signal is sent to the primary replica server and the secondary replica servers.
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15. A file system, comprising:
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a primary replica server configured to store a replica of data; and at least one secondary replica server configured to also store the replica of data, the primary replica server and the at least one secondary replica server in combination being configured to; receive data associated with a data-modifying operation at one of the primary replica server or the at least one secondary replica server that is closest to a sender of the data, forward the data to another one of the primary replica server or the at least one secondary replica server from the one of the primary replica server or the at least one secondary replica server that is closest to the sender of the data, receive, at the primary replica server, a data-modifying control signal that requests execution of the data-modifying operation on the data associated with the data-modifying operation, and forward the data-modifying control signal to the at least one secondary replica server from the primary replica server.
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16. A method for performing a data-modifying operation in a file system that includes a plurality of servers that store replicas of data, one of the servers serving as a primary replica server for one of the replicas of data and other ones of the servers serving as secondary replica servers for the one replica of data, the method comprising:
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receiving data associated with the data-modifying operation at the primary replica server or one of the secondary replica servers; forwarding the data from the primary replica server or one of the secondary replica servers to other ones of the primary replica server or the secondary replica servers; receiving, at the primary replica server, a data-modifying signal that requests execution of the data-modifying operation on the data associated with the data-modifying operation, the primary replica server receiving the data-modifying signal independently of the data; and forwarding the data-modifying signal to the secondary replica servers.
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17. A file system, comprising:
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a plurality of servers configured to store replicas of data; and a master connected to the servers and configured to; receive a request for identification of the servers that store a replica of data, determine whether one of the servers has a lease for the replica of data, identify the one server as a primary replica server when the one server has a lease for the replica of data, identify other ones of the servers, as secondary replica servers, that store the replica of data, and send a reply that identifies locations of the primary replica server and the secondary replica servers. - View Dependent Claims (18, 19, 20, 21)
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22. A file system that includes a plurality of servers that store replicas of data, one of the servers serving as a primary replica server for one of the replicas of data and other ones of the servers serving as secondary replica servers for the one replica of data, the file system comprising:
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means for sending data associated with a data-modifying operation from a client to the primary replica server and the secondary replica servers in a first sequence; and means for sending a data-modifying control signal that requests execution of the data-modifying operation on the data associated with the data-modifying operation to the primary replica server and the secondary replica servers in a second sequence, where the second sequence is independent of the first sequence.
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Specification