Systems and methods for continuous data protection

Abstract

Example embodiments relate generally to systems and methods for continuous data protection (CDP) and more specifically to an input and output (I/O) filtering framework and log management system to seek a near-zero recovery point objective (RPO).

1 . A method comprising at least the following operations:
 collecting I/O data from a source;   providing a touchpoint to parse and configure the collection of the I/O data;   sending a parsed section of the collected I/O data to a log receiver for storage as a log-chain in an I/O log, the parsed section of the collected I/O data excluding at least one canceled I/O request identified at an I/O completion;   receiving a request for recoverable data from a destination; and   causing or facilitating a transmission of the requested data to the destination based at least on a portion of the stored log-chain.   
     
     
         2 . The method of  claim 1 , wherein the parsed section of the I/O data includes only completed I/O requests exchanged between a virtual machine (VM) and a virtualization server. 
     
     
         3 . The method of  claim 1 , wherein the parsed section of the I/O data excludes canceled I/O requests exchanged between a VM and a virtualization server. 
     
     
         4 . The method of  claim 1 , wherein the operations further comprise forming a recoverable snapshot-log chain by applying the stored log-chain to a base snapshot. 
     
     
         5 . The method of  claim 1 , wherein the operations further comprise establishing a network cache for the parsed section of the collected I/O data between a filter framework and a log receiver. 
     
     
         6 . The method of  claim 5 , wherein the operations further comprise establishing a cache for the parsed section of the collected I/O data at the log receiver. 
     
     
         7 . A system comprising:
 at least one processor for executing machine-readable instructions; and   a memory storing instructions configured to cause the at least one processor to perform operations comprising, at least:   collecting I/O data from a source;   providing a touchpoint to parse and configure the collection of the I/O data;   sending a parsed section of the collected I/O data to a log receiver for storage as a log-chain in an I/O log, the parsed section of the collected I/O data excluding at least one canceled I/O request identified at an I/O completion;   receiving a request for recoverable data from a destination; and   causing or facilitating a transmission of the requested data to the destination based at least on a portion of the stored log-chain.   
     
     
         8 . The system of  claim 7 , wherein the parsed section of the I/O data includes only completed I/O requests exchanged between a virtual machine (VM) and a virtualization server. 
     
     
         9 . The system of  claim 7 , wherein the parsed section of the I/O data excludes canceled I/O requests exchanged between a VM and a virtualization server. 
     
     
         10 . The system of  claim 7 , wherein the operations further comprise forming a recoverable snapshot-log chain by applying the stored log-chain to a base snapshot. 
     
     
         11 . The system of  claim 7 , wherein the operations further comprise establishing a network cache for the parsed section of the collected I/O data between a filter framework and a log receiver. 
     
     
         12 . The system of  claim 11 , wherein the operations further comprise establishing a cache for the parsed section of the collected I/O data at the log receiver. 
     
     
         13 . A non-transitory, machine-readable medium storing instructions which, when read by a machine, cause the machine to perform operations comprising at least:
 collecting I/O data from a source;   providing touchpoint to parse and configure the collection of the I/O data;   sending a parsed section of the collected I/O data to a log receiver for storage as a log-chain in an I/O log, the parsed section of the collected I/O data excluding at least one canceled I/O request identified at an I/O completion;   receiving a request for recoverable data from a destination; and   causing or facilitating a transmission of the requested data to the destination based at least on a portion of the stored log-chain.   
     
     
         14 . The medium of  claim 13 , wherein the parsed section of the I/O data includes only completed I/O requests exchanged between a virtual machine (VM) and a virtualization server. 
     
     
         15 . The medium of  claim 13 , wherein the parsed section of the I/O data excludes canceled I/O requests exchanged between a VM and a virtualization server. 
     
     
         16 . The medium of  claim 13 , wherein the operations further comprise forming a recoverable snapshot-log chain by applying the stored log-chain to a base snapshot. 
     
     
         17 . The medium of  claim 13 , wherein the operations further comprise establishing a network cache for the parsed section of the collected I/O data between a filter framework and a log receiver. 
     
     
         18 . The medium of  claim 17 , wherein the operations further comprise establishing a cache for the parsed section of the collected I/O data at the log receiver. 
     
     
         19 . A method comprising:
 collecting I/O data from a source;   providing a touchpoint to parse and configure the collection of the I/O data;   sending a parsed section of the collected I/O data to a log receiver for storage as a log-chain in an I/O log, the parsed section of the collected I/O data excluding at least one canceled I/O request identified at an I/O completion;   receiving a request for recoverable data; and   causing or facilitating a transmission of the requested data based at least on a portion of the stored log-chain.   
     
     
         20 . The method of  claim 19 , further comprising:
 forming a recoverable snapshot-log chain by applying the stored log-chain to a base snapshot.