SOLID-STATE STORAGE DEVICE FLASH TRANSLATION LAYER
Research output: Patent
Embodiments of the present invention include a method for storing a data page d on a solid-state storage device, wherein the solid-state storage device is configured to maintain a mapping table in a Log-Structure Merge (LSM) tree having a C0 component which is a random access memory (RAM) device and a C1 component which is a flash-based memory device. Methods comprise: writing the data page d at a physical storage page having physical storage page address P in the storage device in response to receiving a write request to store the data page d at a logical storage page having a logical storage page address L; caching a new mapping entry e(L,P) associating the logical storage page address L with the physical storage page address P; providing an update indication for the cached new mapping entry to indicate that the cached new mapping entry shall be inserted in the C1 component; and evicting the new mapping entry from the cache. Corresponding solid-state storage device is also provided.
|IPC||G06F12/02; G06F12/08; G06F12/12|
|Patent number||US2017249257 (A1) ― 2017-08-31|
|Priority number||US201615056381 20160229|
|Publication status||Published - 31 Aug 2017|
Application number: US201615056381 20160229