Block storage using a hybrid memory device

• US 10,228,881 B2
• Filed: 11/01/2016
• Issued: 03/12/2019
• Est. Priority Date: 04/12/2013
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Lee, Scott Chao-Chueh, Alexander, Robin A., Prewitt, Lee E., Chen, Chiuchin, Sadovsky, Vladimir
• Primary Examiner(s): Rigol, Yaima
• Application Number:
  US15/340,506
• Publication Number:
  US 20170131952A1
• Time in Patent Office: 861 Days
• Field of Search: 711103, 711115, 715837
• CPC Class Codes: G06F 3/06 Digital input from, or digital output to, record carriers , e.g. RAID, emulated record carriers or networked record carriers
• CPC Class Codes: G06F 3/0604 Improving or facilitating administration, e.g. storage management
• CPC Class Codes: G06F 3/0605 by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/0646 Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
• CPC Class Codes: G06F 3/0659 Command handling arrangements, e.g. command buffers, queues, command scheduling
• CPC Class Codes: G06F 3/068 Hybrid storage device
• CPC Class Codes: G06F 3/0685 Hybrid storage combining heterogeneous device types, e.g. hierarchical storage, hybrid arrays

Abstract

Techniques for block storage using a hybrid memory device are described. In at least some embodiments, a hybrid memory device includes a volatile memory portion, such as dynamic random access memory (DRAM). The hybrid memory device further includes non-volatile memory portion, such as flash memory. In at least some embodiments, the hybrid memory device can be embodied as a non-volatile dual in-line memory module, or NVDIMM. Techniques discussed herein employ various functionalities to enable the hybrid memory device to be exposed to various entities as an available block storage device.

Claims

1. A system comprising:

at least one processor;

multiple hybrid memory devices individually including at least one volatile memory portion and at least one non-volatile memory portion; and

one or more computer-readable storage media including instructions stored thereon that, responsive to execution by the at least one processor, cause the system to perform operations including;

detecting the multiple hybrid memory devices on the system;

rendering, on a display device, a visual representation of a mapping between block storage devices and hybrid memory devices, the mapping comprising the multiple hybrid memory devices mapped as one block storage device, or multiple instances of a block storage device mapped to a single instance of a hybrid memory device;

receiving an indication of user input dragging a representation of data to the visual representation; and

storing the data at one or more of the multiple hybrid memory devices responsive to the indication of user input, wherein the hybrid memory devices are accessed via logical block addressing.

2. The system as recited in claim 1, wherein the multiple hybrid memory devices comprise one or more non-volatile dual in-line memory module devices (NVDIMMs).

3. The system as recited in claim 1, wherein the operations further include generating at least one entry in a device table for the system that identifies the multiple hybrid memory devices as one or more block storage devices.

4. The system as recited in claim 3, wherein the device table comprises an advanced configuration and power interface (ACPI) table.

5. The system as recited in claim 1, wherein said rendering further comprises rendering the visual representation of the multiple hybrid memory devices as a single block storage device.

6. The system as recited in claim 1, wherein the multiple hybrid memory devices comprise a bootable environment stored on the at least one non-volatile memory portion such that the system can be booted from the bootable environment.

7. The system as recited in claim 1, wherein said rendering comprises:

generating a device object that represents one or more instances of the one or more block storage devices;

loading, responsive to said generating, at least one device driver for the multiple hybrid memory devices; and

rendering the visual representation to enable a user to interact directly with the one or more instances of the block storage devices via the device driver and the device object.

8. A computer-implemented method, comprising:

detecting multiple hybrid memory devices on a system;

rendering, on a display device, a visual representation of a mapping between block storage devices and hybrid memory devices, the mapping comprising the multiple hybrid memory devices mapped as one block storage device and multiple instances of a block storage device mapped to a single instance of a hybrid memory device;

receiving, via a user input device, an indication of user input indicating a request to save data to the visual representation of the one block storage device; and

storing data at one or more of the multiple hybrid memory devices responsive to the indication of user input, wherein the hybrid memory devices are accessed via logical block addressing.

9. The method as described in claim 8, further comprising:

receiving a notification of an error condition for the system; and

causing data from the system to be stored on at least one of the multiple hybrid memory devices such that the data can be recovered in an event that the system loses the data.

10. The method as described in claim 9, wherein the data comprises at least one of an image of one or more portions of a volatile memory of the system, or a volatile state of one or more instances of hardware of the system.

11. The method as described in claim 8, further comprising detecting a different hybrid memory device installed on the system, wherein said rendering comprises exposing the multiple hybrid memory devices and the different hybrid memory device as a single instance of an available block storage device.

12. The method as described in claim 8, further comprising:

querying the multiple hybrid memory devices for one or more state conditions of the multiple hybrid memory devices; and

initiating one or more actions based on the state conditions.

13. The method as described in claim 8, further comprising:

initiating a boot process for the system;

detecting a bootable environment stored on at least one of the multiple hybrid memory devices; and

booting the system using the bootable environment from the at least one of the multiple hybrid memory devices.

14. A method comprising:

discovering an instance of a block storage device that corresponds to multiple hybrid memory devices installed on a computing device, the multiple hybrid memory devices including a volatile memory portion and a non-volatile memory portion;

generating, responsive to said discovery of the instance, a device object that represents the instance of the block storage device;

loading, responsive to said generating the device object, a device driver for the multiple hybrid memory devices; and

rendering, on a display device, a visual representation of a mapping between block storage devices and hybrid memory devices, the mapping comprising the multiple hybrid memory devices mapped as the device object or multiple instances of the device storage device mapped to a single instance of a hybrid memory device, the visual representation enabling a user to interact, via the visual representation, with the hybrid memory devices and block storage devices via the device driver and the device object such that data is directly writable to or readable from the multiple hybrid memory devices via logical block addressing.

15. The method as recited in claim 14, wherein the multiple hybrid memory devices comprise a non-volatile dual in-line memory module device (NVDIMM).

16. The method as recited in claim 14, wherein said enabling comprises enabling a user to select the visual representation of the block storage device for non-volatile storage of data on the computing device.

17. The method as recited in claim 14, comprising:

receiving a notification event from the block storage device; and

initiating an action based on the notification event and utilizing the computing device.

18. The method as recited in claim 17, wherein the notification event indicates at least one of a hardware error or a software error, and the action comprises writing data to the non-volatile memory portion in response to the notification event.

19. The method as recited in claim 14, comprising:

querying the multiple hybrid memory devices for a state condition of the multiple hybrid memory devices; and

logging a state of the multiple hybrid memory devices based on the state condition.

20. The method as recited in claim 14, comprising:

receiving an indication of an event that may cause a loss of data for the computing device; and

saving the data to the non-volatile memory portion.