Systems and methods for managing delayed allocation on clustered file systems

A system for managing delayed allocation on clustered file systems, the system comprising:

• a receiving module, stored in memory, that receives, at a global lock manager that stores, within a lock range data structure, storage disk allocation information for a plurality of nodes in a clustered file system, a lock request from a node that requests a lock range on a storage disk to store data from a file;
• a reservation module, stored in memory, that reserves, by the global lock manager, in the lock range data structure, the lock range on the storage disk for the data from the file in response to the lock request from the node, wherein:
• the receiving module receives, at the global lock manager, from an additional node within the plurality of nodes in the clustered file system, an additional lock request for an additional lock range on the storage disk to store additional data from the file;
• and
• the reservation module reserves, by the global lock manager, in the lock range data structure, the additional lock range to be adjacent to the lock range on the storage disk based on the additional data on the additional node being from the same file as the data on the node;
• and
• a quota management module, stored in memory, that:
• determines, at a quota management node, a delayed allocation quota for each individual node in the plurality of nodes, wherein the delayed allocation quota comprises a total amount of memory available in a buffer to be claimed by the individual node via lock ranges reserved by the individual node with the global lock manager;
• determines, at the quota management node, that the node has met a delayed allocation quota for the node;
• and
• disallows, by the quota management node, the node from receiving additional lock ranges from the global lock manager until the node has written all of the data stored in the buffer for the node to the storage disk, wherein the data corresponds to the total amount of memory available in the buffer to be claimed by the node via the lock ranges;
• and
• at least one physical hardware processor configured to execute the receiving module, the reservation module, and the quota management module.

A non-transitory computer-readable medium comprising one or more computer-readable instructions that, when executed by at least one processor of a computing device, cause the computing device to:

• receive, at a global lock manager that stores, within a lock range data structure, storage disk allocation information for a plurality of nodes in a clustered file system, a lock request from a node that requests a lock range on a storage disk to store data from a file;
• reserve, by the global lock manager, in the lock range data structure, the lock range on the storage disk for the data from the file in response to the lock request from the node;
• receive, at the global lock manager, from an additional node within the plurality of nodes in the clustered file system, an additional lock request for an additional lock range on the storage disk to store additional data from the file;
• reserve, by the global lock manager, in the lock range data structure, the additional lock range to be adjacent to the lock range on the storage disk based on the additional data on the additional node being from the same file as the data on the node;
• determine, at a quota management node, a delayed allocation quota for each individual node in the plurality of nodes, wherein the delayed allocation quota comprises a total amount of memory in a buffer available to be claimed by the individual node via lock ranges reserved by the individual node with the global lock manager;
• determine, at the quota management node, that the node has met a delayed allocation quota for the node;
• and
• disallow, by the quota management node, the node from receiving additional lock ranges from the global lock manager until the node has written all of the data stored in the buffer for the node to the storage disk, wherein the data corresponds to the total amount of memory available in the buffer to be claimed by the node via the lock ranges.