Systems and methods for accessing block storage devices are provided. In particular, a computing device may receive a write request including an uncompressed data and an uncompressed block address associated with the uncompressed data, generate compressed data by compressing the uncompressed data, determine a plurality of mapping candidates of compressed data blocks in the block storage devices based on the uncompressed block address, select a compressed data block from the plurality of mapping candidates that has sufficient capacity to store the compressed data, write the compressed data to the selected compressed data block, update metadata of the selected compressed data block to link the uncompressed block address to a compressed block address of the selected compressed data block, and write the selected compressed data block back to a respective block storage device of the block storage devices.