Replication techniques with data copy avoidance

A system comprising:

• one or more processors;
• and
• a memory comprising code stored thereon that, when executed, performs a method comprising:
• receiving, from a first component, a bufferless read request to read first data from one or more logical addresses of a storage object;
• responsive to receiving the bufferless read request, performing first processing including:
• opening a first transaction;
• acquiring one or more locks of one or more data pages including the first data;
• locking a set of one or more cache pages of a cache;
• and
• storing the first data in the set of one or more cache pages;
• responsive to storing the first data in the set of one or more cache pages, sending a notification to the first component, wherein the notification identifies one or more references, pointers or addresses of the one or more cache pages of the set storing the first data;
• responsive to receiving the notification, the first component performing one or more operations including directly accessing the first data from the cache using the one or more references, pointers or addresses;
• and
• responsive to successfully completing the one or more operations, performing second processing including:
• releasing or unlocking the set of one or more cache pages storing the first data;
• releasing the one or more locks of the one or more data pages including the first data;
• and
• closing the first transaction.

A non-transitory computer-readable memory comprising code stored thereon that, when executed, performs a method comprising:

• receiving, from a first component, a bufferless read request to read first data from one or more logical addresses of a storage object;
• responsive to receiving the bufferless read request, performing first processing including:
• opening a first transaction;
• acquiring one or more locks of one or more data pages including the first data;
• locking a set of one or more cache pages of a cache;
• and
• storing the first data in the set of one or more cache pages;
• responsive to storing the first data in the set of one or more cache pages, sending a notification to the first component, wherein the notification identifies one or more references, pointers or addresses of the one or more cache pages of the set storing the first data;
• responsive to receiving the notification, the first component performing one or more operations including directly accessing the first data from the cache using the one or more references, pointers or addresses;
• and
• responsive to successfully completing the one or more operations, performing second processing including:
• releasing or unlocking the set of one or more cache pages storing the first data;
• releasing the one or more locks of the one or more data pages including the first data;
• and
• closing the first transaction.