Methods for host-side caching and application consistent writeback restore and devices thereof

A non-transitory computer readable medium having stored thereon instructions including executable code configured to perform steps comprising:

• receiving a first write operation having an offset and first data directed to a file from an application executing on a client computing device;
• determining when the file is present in a cache of a computing device;
• sending an acknowledgement of the first write operation to the client computing device, when the file is determined to be present in the cache and the first data is written to the file in the cache;
• adding the offset to a dirty list;
• blocking processing of a second write operation directed to the file and having second data received from the application executing on the client computing device;
• write-protecting the offset of the dirty list upon receiving the second write operation;
• resuming processing of the second write operation;
• completing a write-back operation for the first data present in the cache to a storage server upon sending the acknowledgement;
• and
• write-unprotecting the offset of the dirty list when the write-back operation is complete.

A computing device comprising:

• a processor;
• a memory coupled to the processor, the memory including programmed instructions configured to:
• receive a first write operation having an offset and first data directed to a file from an application executing on a client computing device;
• determine when the file is present in a cache of the computing device;
• send an acknowledgement of the first write operation to the client computing device when the file is determined to be present in the cache and the first data is written to the file in the cache;
• add the offset to a dirty list;
• block processing of a second write operation directed to the file and having second data received from the application executing on the client computing device;
• write-protect the offset of the dirty list upon receiving the second write operation;
• resume processing of the second write operation;
• complete a write-back operation for the first data present in the cache to a storage server upon sending the acknowledgement;
• and
• write-unprotect the offset of the dirty list when the write-back operation is complete.