Techniques for atomic write operations

An apparatus, comprising:

• a non-volatile memory;
• and
• a controller coupled with the non-volatile memory and configured to cause the apparatus to:
• determine, in response to a failure event and for an atomic write operation in which data associated with a write command is linked together for writing to the non-volatile memory, a set of pages previously selected for storing the data associated with the atomic write operation, the determination based at least in part on reading metadata for the atomic write operation, wherein the metadata is stored in each page of the set of pages, and wherein the metadata in a page of the set of pages indicates that the page is in the set of pages previously selected for storing the data associated with the atomic write operation;
• determine, based at least in part on validity information stored in the set of pages, whether each page of the set of pages has been written with a respective amount of the data;
• and
• communicate, to a host system over an interface between the apparatus and the host system, an indication of whether the atomic write operation has been completed based at least in part on determining whether each page of the set of pages has been written with a respective amount of the data.

An apparatus, comprising:

• a non-volatile memory;
• and
• a controller coupled with the non-volatile memory and configured to cause the apparatus to:
• determine metadata for an atomic write operation in which data associated with a write command is linked together for writing to the non-volatile memory, and a set of pages for storing the data associated with the atomic write operation;
• write, to each page in the set of pages for storing the data associated with the atomic write operation and before writing any of the data to the set of pages, the metadata, wherein the metadata in a page of the set of pages indicates that the page is in the set of pages for storing the data associated with the atomic write operation;
• determine, in response to a failure event and based at least in part on the metadata and validity information in each page of the set of pages, whether each page of the set of pages has been written with a respective amount of data from the data for the atomic write operation, wherein the validity information in a page indicates whether the page has been successfully written with a respective amount of data from the data;
• and
• communicate, to a host system over an interface between the apparatus and the host system, an indication of a completion status for the atomic write operation based at least in part on determining whether each page of the set of pages has been written with the respective amount of data from the data for the atomic write operation.