CN116301588A - Write processing method, device, equipment and medium of ZNS solid state disk - Google Patents
Write processing method, device, equipment and medium of ZNS solid state disk Download PDFInfo
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- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0604—Improving or facilitating administration, e.g. storage management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0608—Saving storage space on storage systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
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- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
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Abstract
The embodiment of the invention discloses a write processing method, a device, equipment and a medium of a ZNS solid state disk, wherein the method comprises the following steps: setting a zone space which can be written by a host; receiving a command issued by a host; judging whether the command issued by the host carries an LPA (Low pressure application) overwriting identifier; and if the LPA overwriting identification is carried, overwriting is carried out in the zone space range which can be written by the host according to the command. In the invention, the host computer can write in the ZNS storage space according to the LPA sequence or randomly, the host computer does not need to sense the arrangement of the data on the medium, the device does not GC the ZNS storage space, and the host computer releases the medium space occupied by the ZNS at one time in a ZNS mode. The effect of simplifying ZNS concurrent write random write interaction and reducing WA is achieved. In addition, the size of the selected zone is aligned with the size of the ZNSblock, so that the mapping of the zone and the physical space is facilitated, and the redundant space is reduced.
Description
Technical Field
The invention relates to a solid state disk, in particular to a write processing method, a device, equipment and a medium of a ZNS solid state disk.
Background
In a conventional SSD (solid state disk), data is placed in sequence based on a request of a data stream, and when a plurality of application data streams are issued simultaneously, the data are mixed together and dropped.
ZNSSSD is a method of dividing the entire LBA range of SSDnamespace into a plurality of equal length zones, each zone having to be written to in a sequential fashion, each zone having its own state machine for management. The zone maintains sequential writing, can realize WAF approaching 1, compared with the WAF value of the common server SSD between 3 and 4, the service life of the ZNSSSD is four times that of the conventional disk, so that the ZNSSSD becomes a more environment-friendly and sustainable solution for the server infrastructure.
However, the transition from traditional SSD to znssds, the current znssds require an adaptation that is responsible for the upper layer software: 1. the host is required to ensure sequential writing, otherwise, write return errors are possibly caused by out-of-order in the disk, but a random writing scene exists in actual business; 2. the application can meet the random writing scene to a certain extent, but needs host to refresh the logic address actually allocated by the written data, so that the mapping relation of the logic address needs to be specially maintained.
In summary, there is a need to design a ZNS scheme that supports concurrent writing, random writing, without maintaining the mapping relationship, and that can improve delivery efficiency with host.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a write processing method, a device, equipment and a medium of a ZNS solid state disk.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in a first aspect, a write processing method of a ZNS solid state disk includes:
setting a zone space which can be written by a host;
receiving a command issued by a host;
judging whether the command issued by the host carries an LPA (Low pressure application) overwriting identifier;
and if the LPA overwriting identification is carried, overwriting is carried out in the zone space range which can be written by the host according to the command.
The further technical scheme is as follows: the setting of the zone space which can be written by the host comprises the following steps:
selecting a zone to which a host can write data;
the size of the selected zone is aligned with the ZNSblock size.
The further technical scheme is as follows: the setting of the zone space which can be written by the host computer further comprises:
the selected zone is set to write data only once after the open state.
The further technical scheme is as follows: after judging whether the command issued by the host carries the LPA overwriting identifier, the method further comprises the following steps:
if the LPA overlay mark is not carried, judging whether data are written in the zone space range which can be written by the host;
if not, the FTL is modified and physical space is allocated for the LPA.
The write processing device of the ZNS solid state disk comprises a setting unit, a receiving unit, a first judging unit and an overwriting unit;
the setting unit is used for setting a zone space which can be written by a host;
the receiving unit is used for receiving the command issued by the host;
the first judging unit is used for judging whether the command issued by the host carries the LPA overwriting identifier;
and the overwriting unit is used for overwriting in the zone space range writable by the host according to the command if the LPA overwriting identifier is carried.
The further technical scheme is as follows: the setting unit comprises a selection module and an alignment module;
the selecting module is used for selecting a zone in which the host can write data;
the alignment module is used for aligning the size of the selected zone with the size of the ZNSblock.
The further technical scheme is as follows: the setting unit further comprises a setting module;
the setting module is used for setting that the selected zone can only write data once after the open state.
The further technical scheme is as follows: the system also comprises a second judging unit and a modifying unit;
the second judging unit is used for judging whether data are written in the zone space range which can be written by the host if the LPA overwriting mark is not carried;
and the modification unit is used for modifying the FTL if not, and distributing a physical space for the LPA.
In a third aspect, a computer device includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements a write processing method of a ZNS solid state disk as described above when executing the computer program.
In a fourth aspect, a computer readable storage medium stores a computer program, where the computer program includes program instructions, where the program instructions, when executed by a processor, cause the processor to perform a write processing method of a ZNS solid state disk as described above.
Compared with the prior art, the invention has the beneficial effects that: the invention sets the zone space which can be written by the host; receiving a command issued by a host; judging whether the command issued by the host carries an LPA (Low pressure application) overwriting identifier; and if the LPA overwriting identification is carried, overwriting is carried out in the zone space range which can be written by the host according to the command. The host computer can write according to LPA sequence in ZNS storage space, also can write randomly, the data are distributed on the medium, the host computer does not need to sense, the device does not GC the ZNS storage space, and the host computer releases the medium space occupied by the ZNS at one time in a ZNS mode. The effect of simplifying ZNS concurrent write random write interaction and reducing WA is achieved. In addition, the size of the selected zone is aligned with the size of the ZNSblock, so that the mapping of the zone and the physical space is facilitated, and the redundant space is reduced.
The foregoing description is only an overview of the present invention, and is intended to be more clearly understood as being carried out in accordance with the following description of the preferred embodiments, as well as other objects, features and advantages of the present invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of a write processing method of a ZNS solid state disk according to an embodiment of the present invention;
FIG. 2 is a schematic block diagram of a write processing apparatus for a ZNS solid state disk according to an embodiment of the present invention;
FIG. 3 is a schematic block diagram of a computer device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a Zone size alignment manner according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
The embodiment of the invention provides a write processing method of a ZNS solid state disk, as shown in figure 1, comprising the following steps: S10-S40.
S10, setting a zone space which can be written by a host.
In one embodiment, the step S10 specifically includes the following steps:
s101, selecting a zone to which a host can write data.
For ZNS solid state drives, the whole LBA range of the SSDnamespace is divided into a plurality of equal-length zones, so that the zones in which the host can write data can be selected according to the requirements.
S102, aligning the size of the selected zone with the size of the ZNSblock.
As shown in fig. 4, zonecapacity (ZCAP) are aligned according to the media physical block size, such as 36MB, 76MB, etc. Zonesize (ZSZE) can be aligned with ZCAP or to the power of 2
By setting alignment, the zone space which can be written by host is ZCAP, and the alignment is performed according to physical block, thereby facilitating the mapping of zone and physical space and reducing redundant space.
In an embodiment, step S10 further includes the steps of: s103.
S103, setting the selected zone to write data once after the open state.
The open state refers to one of the states of the zone, i.e., the zone on state, in which data can be written only.
By setting the zone space, the host can write to the ZNS storage space according to the LPA sequence or randomly write, and the SSD does not carry out GC (garbage collection) on the ZNS storage space. When the data of the zone is abandoned, the Host releases the medium space occupied by the zone for one-time reset of the zone, thereby achieving the effects of simplifying ZNS concurrent writing random writing interaction and reducing WA.
S20, receiving a command issued by the host.
S30, judging whether the command issued by the host carries the LPA overwriting identifier.
The LPA overlay identity may be agreed between the host and the device, specifically, the write command 13 (DatasetManagement) may be used for the agreement.
And S40, if the LPA overwriting mark is carried, overwriting is carried out in the zone space range which can be written by the host according to the command.
In an embodiment, step S30 further includes the following steps: s50 and S60.
And S50, if the LPA overwriting mark is not carried, judging whether data are written in the zone space range which can be written by the host computer.
S60, if not, modifying the FTL, distributing physical space for the LPA, and if so, returning error information.
FIG. 2 is a schematic block diagram of a write processing device of a ZNS solid state disk provided by an embodiment of the invention; corresponding to the method for writing and processing the ZNS solid state disk, the embodiment of the invention also provides a device 100 for writing and processing the ZNS solid state disk.
As shown in fig. 2, the write processing apparatus 100 of the ZNS solid state disk includes a setting unit 110, a receiving unit 120, a first judging unit 130, and an overwriting unit 140. The setting unit is used for setting a zone space which can be written by the host; the receiving unit is used for receiving the command issued by the host; the first judging unit is used for judging whether the command issued by the host carries the LPA overwriting identifier; and the overwriting unit is used for overwriting in the zone space range writable by the host according to the command if the LPA overwriting identifier is carried.
In one embodiment, the setting unit 110 includes a selection module and an alignment module. The selecting module is used for selecting a zone in which the host can write data; and the alignment module is used for aligning the size of the selected zone with the size of the ZNS block.
In an embodiment, the setting unit 110 further includes a setting module; the setting module is used for setting that the selected zone can only write data once after the open state.
In an embodiment, the write processing apparatus 100 of the ZNS solid state disk further includes a second judging unit 150 and a modifying unit 160; the second judging unit is used for judging whether data are written in the zone space range which can be written by the host computer if the LPA overlay mark is not carried; and the modifying unit is used for modifying the FTL if not, and distributing the physical space for the LPA.
The write processing apparatus of the ZNS solid state disk described above may be implemented in the form of a computer program that may be run on a computer device as shown in fig. 3.
Referring to fig. 3, fig. 3 is a schematic block diagram of a computer device according to an embodiment of the present application. The computer device 700 may be a server, where the server may be a stand-alone server or may be a server cluster formed by a plurality of servers.
As shown in fig. 3, the computer device includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements the steps of the write processing method of the ZNS solid state disk described above when executing the computer program.
The computer device 700 may be a terminal or a server. The computer device 700 includes a processor 720, a memory, and a network interface 750, which are connected through a system bus 710, wherein the memory may include a non-volatile storage medium 730 and an internal memory 740.
The non-volatile storage medium 730 may store an operating system 731 and computer programs 732. The computer program 732, when executed, may cause the processor 720 to perform any one of the write processing methods of the ZNS solid state disk.
The processor 720 is used to provide computing and control capabilities to support the operation of the overall computer device 700.
The internal memory 740 provides an environment for the execution of a computer program 732 in the nonvolatile storage medium 730, and when the computer program 732 is executed by the processor 720, the processor 720 can execute any write processing method of the ZNS solid state disk.
The network interface 750 is used for network communications such as sending assigned tasks and the like. Those skilled in the art will appreciate that the structures shown in FIG. 3 are block diagrams only and do not constitute a limitation of the computer device 700 to which the present teachings apply, and that a particular computer device 700 may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components. Wherein the processor 720 is configured to execute the program code stored in the memory to implement the following steps:
a write processing method of a ZNS solid state disk comprises the following steps:
setting a zone space which can be written by a host;
receiving a command issued by a host;
judging whether the command issued by the host carries an LPA (Low pressure application) overwriting identifier;
and if the LPA overwriting identification is carried, overwriting is carried out in the zone space range which can be written by the host according to the command.
In one embodiment: the setting of the zone space which can be written by the host comprises the following steps:
selecting a zone to which a host can write data;
the size of the selected zone is aligned with the ZNSblock size.
In one embodiment: the setting of the zone space which can be written by the host computer further comprises:
the selected zone is set to write data only once after the open state.
In one embodiment: after judging whether the command issued by the host carries the LPA overwriting identifier, the method further comprises the following steps:
if the LPA overlay mark is not carried, judging whether data are written in the zone space range which can be written by the host;
if not, the FTL is modified and physical space is allocated for the LPA.
It should be appreciated that in embodiments of the present application, the processor 720 may be a Central processing unit (Central ProcessingUnit, CPU), the processor 720 may also be other general purpose processors, digital signal processors (DigitalSignalProcessor, DSP), application specific integrated circuits (ApplicationSpecificIntegrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-ProgrammableGateArray, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. Wherein the general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
Those skilled in the art will appreciate that the computer device 700 structure shown in FIG. 3 is not limiting of the computer device 700 and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
In another embodiment of the present invention, a computer-readable storage medium is provided. The computer readable storage medium may be a non-volatile computer readable storage medium. The computer readable storage medium stores a computer program, wherein the computer program realizes the write processing method of the ZNS solid state disk disclosed by the embodiment of the invention when being executed by a processor.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the apparatus, device and unit described above may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein. Those of ordinary skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be embodied in electronic hardware, in computer software, or in a combination of the two, and that the elements and steps of the examples have been generally described in terms of function in the foregoing description to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus, device and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units is merely a logical function division, there may be another division manner in actual implementation, or units having the same function may be integrated into one unit, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices, or elements, or may be an electrical, mechanical, or other form of connection.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment of the present invention.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units may be stored in a storage medium if implemented in the form of software functional units and sold or used as stand-alone products. Based on such understanding, the technical solution of the present invention is essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only memory (ROM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. A write processing method of a ZNS solid state disk is characterized by comprising the following steps:
setting a zone space which can be written by a host;
receiving a command issued by a host;
judging whether the command issued by the host carries an LPA (Low pressure application) overwriting identifier;
and if the LPA overwriting identification is carried, overwriting is carried out in the zone space range which can be written by the host according to the command.
2. The method for processing write of the ZNS solid state disk according to claim 1, wherein the setting the zone space writable by the host includes:
selecting a zone to which a host can write data;
the size of the selected zone is aligned with the ZNS block size.
3. The method for processing write of the ZNS solid state disk according to claim 1, wherein the setting the zone space writable by the host further comprises:
the selected zone is set to write data only once after the open state.
4. The method for processing write of the ZNS solid state disk according to claim 1, wherein after determining whether the command issued by the host carries the LPA overlay mark, further comprises:
if the LPA overlay mark is not carried, judging whether data are written in the zone space range which can be written by the host;
if not, the FTL is modified and physical space is allocated for the LPA.
The write processing device of the ZNS solid state disk is characterized by comprising a setting unit, a receiving unit, a first judging unit and an overwriting unit;
the setting unit is used for setting a zone space which can be written by a host;
the receiving unit is used for receiving the command issued by the host;
the first judging unit is used for judging whether the command issued by the host carries the LPA overwriting identifier;
and the overwriting unit is used for overwriting in the zone space range writable by the host according to the command if the LPA overwriting identifier is carried.
6. The write processing apparatus of the ZNS solid state disk of claim 5, wherein the setting unit comprises a selection module and an alignment module;
the selecting module is used for selecting a zone in which the host can write data;
the alignment module is used for aligning the size of the selected zone with the size of the ZNS block.
7. The write processing apparatus of the ZNS solid state disk of claim 5, wherein the setting unit further comprises a setting module;
the setting module is used for setting that the selected zone can only write data once after the open state.
8. The write processing apparatus of the ZNS solid state disk of claim 5, further comprising a second judging unit and a modifying unit;
the second judging unit is used for judging whether data are written in the zone space range which can be written by the host if the LPA overwriting mark is not carried;
and the modification unit is used for modifying the FTL if not, and distributing a physical space for the LPA.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a write processing method of a ZNS solid state disk according to any one of claims 1 to 4 when executing the computer program.
10. A computer readable storage medium, wherein the storage medium stores a computer program, the computer program comprising program instructions that, when executed by a processor, cause the processor to perform a write processing method of a ZNS solid state disk according to any one of claims 1 to 4.
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| CN202310060179.9A CN116301588A (en) | 2023-01-17 | 2023-01-17 | Write processing method, device, equipment and medium of ZNS solid state disk |
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| CN202310060179.9A CN116301588A (en) | 2023-01-17 | 2023-01-17 | Write processing method, device, equipment and medium of ZNS solid state disk |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117406933A (en) * | 2023-12-12 | 2024-01-16 | 深圳大普微电子股份有限公司 | Solid state disk data processing method and device, electronic equipment and storage medium |
| CN117707436A (en) * | 2024-02-05 | 2024-03-15 | 苏州元脑智能科技有限公司 | Firmware mode switching method and device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117406933A (en) * | 2023-12-12 | 2024-01-16 | 深圳大普微电子股份有限公司 | Solid state disk data processing method and device, electronic equipment and storage medium |
| CN117406933B (en) * | 2023-12-12 | 2024-03-29 | 深圳大普微电子股份有限公司 | Solid state disk data processing method and device, electronic equipment and storage medium |
| CN117707436A (en) * | 2024-02-05 | 2024-03-15 | 苏州元脑智能科技有限公司 | Firmware mode switching method and device, electronic equipment and storage medium |
| CN117707436B (en) * | 2024-02-05 | 2024-05-03 | 苏州元脑智能科技有限公司 | Firmware mode switching method and device, electronic equipment and storage medium |
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