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NVME_RESERVATION_NOTIFICATION_LOG structure (nvme.h)

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Contains fields that specify the information in a Reservation Notification Log page.

A Reservation Notification log page is created whenever an unmasked reservation notification occurs on any namespace that may be accessed by the controller. The Get Log Page command returns a data buffer containing a log page corresponding to a single reservation notification. This log page is global to the controller.

Syntax

typedef struct {
  ULONGLONG LogPageCount;
  UCHAR     LogPageType;
  UCHAR     AvailableLogPageCount;
  UCHAR     Reserved0[2];
  ULONG     NameSpaceId;
  UCHAR     Reserved1[48];
} NVME_RESERVATION_NOTIFICATION_LOG, *PNVME_RESERVATION_NOTIFICATION_LOG;

Members

LogPageCount

A 64-bit incrementing Reservation Notification log page count, indicating a unique identifier for this notification.

The count starts at 0h following a controller reset, is incremented with each unique log entry, and rolls over to zero when the maximum count is reached and a log page is created. A value of 0h indicates an empty log entry.

LogPageType

A NVME_RESERVATION_NOTIFICATION_TYPES value that indicates the Reservation Notification type described by this log page.

AvailableLogPageCount

Indicates the number of additional available Reservation Notification log pages (for example, the number of unread log pages not counting this one).

If there are more than 255 additional available log pages, a value of 255 is returned. A value of zero indicates that there are no additional available log pages.

Reserved0[2]

A reserved field.

NameSpaceId

Indicates the namespace ID of the namespace associated with the Reservation Notification described by this log page.

Reserved1[48]

A reserved field.

Requirements

Requirement Value
Minimum supported client Windows 10
Header nvme.h