Hewlett Packard Enterprise Development LP

Shyamalendu Sarkar

Narayanan Ananthakrishnan Nellayi

Sri Satya Sudhanva Kambhammettu

Subhakar Vipparti

Naveen B

In one example, a method may include receiving a write operation corresponding to a portion of a data chunk stored at a first storage location in a write-in-place file system. The write-in-place file system may include encoded data chunks and unencoded data chunks. The method may include determining whether the data chunk is an encoded data chunk based on metadata associated with the data chunk, modifying the data chunk based on the write operation, and selectively performing a redirect-on-write operation on the modified data chunk based on the determination.

Selectively redirect-on-write data chunks in write-in-place file systems

For storing data in a storage device, a storage allocation request may be received. The storage allocation request may include a logical offset of data to be stored. Further, a chunk size of the storage device and a device offset for a free region on the storage device may be received. An offset value may be computed based on the chunk size, file system block size, the device offset, and the logical offset. A device start address, for storing the data in response to the storage allocation request, can be determined by offsetting the device offset with the offset value.

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Shyamalendu Sarkar