CN111737051A - Trim data verification test method, device and system of SSD solid state disk - Google Patents
Trim data verification test method, device and system of SSD solid state disk Download PDFInfo
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Abstract
The invention discloses a trim data verification test method, a device and a system of an SSD solid state disk.A trim table is created, the trim table comprises a plurality of recording bits, the number of the recording bits is the same as the number of logical block addresses of the SSD solid state disk to be tested, and one recording bit corresponds to one logical block address; when a trim command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in a trim table as an invalid identifier; when a write command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in the trim table as an effective identifier; and after all the commands are issued, reading the data content of each logic block address of the SSD solid state disk to be tested, verifying the identification information of each corresponding recording bit in the trim table, and if the data content of all the logic block addresses is consistent with the identification information of the recording bit in the corresponding trim table, normally checking trim data of the SSD solid state disk to be tested. The method records the data validity of the logical block address in the SSD solid state disk in real time, constructs the test case and enables the trim data verification scene to be more comprehensive.
Description
Technical Field
The invention relates to the field of SSD solid state disk testing, in particular to a trim data verification testing method, device and system of an SSD solid state disk.
Background
The existing automatic testing means do not effectively record the data content of the trim and also do not record which trim data are written with valid data; this brings about a problem that validity of data verification cannot be confirmed; particularly, in some application scenarios of random trim + random write + power-on and power-off (normal or abnormal), whether data of trim is invalid or not and whether written data is valid or not cannot be confirmed; the existing trim data verification test method for the SSD solid state disk cannot cover relevant scenes in practical application.
Disclosure of Invention
In order to solve the problems, the invention provides a trim data verification test method, a device and a system for an SSD solid state disk, which are used for performing a data verification function test on a random trim + random write scene and increasing test cases of the SSD solid state disk.
The technical scheme of the invention is as follows: a trim data verification test method of an SSD (solid State disk) comprises the following steps:
creating a trim table, wherein the trim table comprises a plurality of recording bits, the number of the recording bits is the same as the number of the logic block addresses of the SSD to be tested, and one recording bit corresponds to one logic block address;
when a trim command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in a trim table as an invalid identifier; when a write command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in the trim table as an effective identifier;
and after all the commands are issued, reading the data content of each logic block address of the SSD solid state disk to be tested, verifying the identification information of each corresponding recording bit in the trim table, and if the data content of all the logic block addresses is consistent with the identification information of the recording bit in the corresponding trim table, normally checking trim data of the SSD solid state disk to be tested.
Further, a trim table is a continuous block of memory space.
Further, one bit of the memory space is one recording bit.
Further, the air conditioner is provided with a fan,
when a trim command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in a trim table as an invalid identifier, namely setting the corresponding bit at a position 1;
when a write command is issued to the SSD solid state disk to be tested, the corresponding recording bit in the trim table is set as an effective identifier, namely the corresponding bit position is set to be 0.
Further, in the process of issuing the command to the SSD solid state disk to be tested, the host where the SSD solid state disk to be tested is located is powered down and powered up.
Further, the method also comprises a test scenario building process, wherein the test scenario building process comprises the following steps:
connecting the control machine with a controlled machine, and installing an SSD solid state disk to be tested on the controlled machine;
in the method, a trim table is created on a control machine.
The technical scheme of the invention also comprises a trim data verification test device of the SSD solid state disk, which comprises,
a trim table creation module: creating a trim table, wherein the trim table comprises a plurality of recording bits, the number of the recording bits is the same as the number of the logic block addresses of the SSD to be tested, and one recording bit corresponds to one logic block address;
an identification information recording module: when a trim command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in a trim table as an invalid identifier; when a write command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in the trim table as an effective identifier;
a test module: and after all the commands are issued, reading the data content of each logic block address of the SSD solid state disk to be tested, verifying the identification information of each corresponding recording bit in the trim table, and if the data content of all the logic block addresses is consistent with the identification information of the recording bit in the corresponding trim table, normally checking trim data of the SSD solid state disk to be tested.
Furthermore, the trim table created by the trim table creating module is a continuous memory space; one bit of the memory space is a recording bit;
when the identification information recording module issues a trim command to the SSD solid state disk to be tested, setting a corresponding recording bit in a trim table as an invalid identification, namely setting a corresponding bit as 1;
when the identification information recording module issues a write command to the SSD solid state disk to be tested, the corresponding recording bit in the trim table is set to be an effective identification, namely the corresponding bit is set to be 0.
Further, the device also comprises a control device,
powering on and powering off the module: and in the command issuing process of the SSD solid state disk to be tested, carrying out power-down and power-up operations on the host where the SSD solid state disk to be tested is located.
The technical scheme of the invention also comprises a trim data verification test system of the SSD solid state disk, which comprises a control machine and a controlled machine, wherein the control machine is provided with the device, and the SSD solid state disk to be tested is arranged on the controlled machine.
The invention provides a trim data verification test method, a device and a system of an SSD solid state disk, wherein a trim table is created, recording bits in the trim table correspond to logic block addresses of the SSD solid state disk to be tested one by one, trim commands and write commands are issued to the SSD solid state disk to be tested, and data valid or invalid identifications of the corresponding logic block addresses are recorded in the corresponding recording bits in the trim table, wherein when the trim commands are issued, the recording bits in the corresponding trim table are invalid, and when the write commands are issued, the recording bits in the corresponding trim table are valid. And performing data verification test after all commands are issued, reading data of the logical block addresses, and judging whether the marks of the corresponding recording bits in the trim table are consistent, namely if the data of a certain logical block address are read as invalid data, the corresponding recording bits in the trim table are invalid marks, if the data are read as valid data, the corresponding recording bits in the trim table are valid marks, and if the data of all the logical block addresses are consistent with the marks of the recording bits in the trim table, the trim data of the SSD solid state disk are verified normally. The method records which logic block addresses are trim and which logic block addresses are write in a trim + write scene of the SSD solid state disk through the trim table, and finally judges whether the trim data check function of the SSD solid state disk is normal or not by verifying whether the data information recorded in the trim table conforms to the logic block address data information of the real SSD solid state disk. The method records the data validity of the logical block address in the SSD solid state disk in real time, constructs the test case and enables the trim data verification scene to be more comprehensive.
Drawings
FIG. 1 is a schematic flow chart of a method according to an embodiment of the present invention.
Fig. 2 is a schematic block diagram of a second structure according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.
The invention relates to the English expression explanation as follows:
(1) SSD: solid State Drive, commonly known as Solid State disk;
(2) TRIM: the IO command which can be processed by the SSD has the function of enabling a section of LBA in the SSD to become invalid data, the issued content comprises a starting LBA and a length LEN, and the effect after the command is successfully executed is that the section of data is read again, and the obtained data is 0xff;
(3) LBA: logical Block Address, and a unit space where the host organizes write data, and in the following embodiment, 4k is an LBA size.
Example one
As shown in fig. 1, the present embodiment provides a trim data verification test method for an SSD solid state disk, including the following steps:
s1, creating a trim table, wherein the trim table comprises a plurality of recording bits, the number of the recording bits is the same as the number of the logic block addresses of the SSD to be tested, and one recording bit corresponds to one logic block address;
s2, when the trim command is issued to the SSD solid state disk to be tested, setting the corresponding recording bit in the trim table as an invalid identifier; when a write command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in the trim table as an effective identifier;
and S3, after all commands are issued, reading the data content of each logic block address of the SSD solid state disk to be tested, verifying the identification information of each corresponding recording bit in the trim table, and if the data content of all the logic block addresses is consistent with the identification information of the recording bit in the corresponding trim table, checking trim data of the SSD solid state disk to be tested normally.
The method can record which logic block addresses are trim and which are write through the trim table, and carries out data verification according to the recording result. In step S3, the data content of the logical block address matches the identification information of the recording bit in the corresponding trim table, which means that the data content of the logical block address is read as invalid data, and the identification information of the recording bit in the corresponding trim table is an invalid identification, so that the data content of the logical block address matches the identification information of the recording bit in the corresponding trim table; similarly, if the data content of a certain logical block address is read as valid data and the identification information of the recording bit in the corresponding trim table is a valid identification, the data content of the logical block address is consistent with the identification information of the recording bit in the corresponding trim table.
To further understand the present solution, a specific embodiment is provided below based on the above steps, in combination with the principles of the present invention.
And S101, building a test environment.
In order to realize the test, a test environment can be built by two hosts, the SSD solid state disk to be tested is placed on one host, the host serves as a controlled machine, the other host serves as a control machine, and the control machine issues various operation instructions to the controlled machine and reads and records related data.
S102, creating a trim table.
Applying for a memory space on the controller, wherein the memory space is a trim table, and it should be noted that the memory space is a continuous memory space.
One bit of the memory space is a recording bit, the number of the recording bits is the same as the number of the LBAs of the SSD solid state disk to be tested, and one recording bit corresponds to one LBA. Specifically, the lowest bit of the starting byte of the memory space corresponds to the LBA0, the next lowest bit corresponds to the LBA1, and so on.
S103, issuing a command and setting a trim table record bit identifier.
The control machine issues a trim command and a write command to the SSD solid state disk to be tested of the controlled machine, and the commands can be issued randomly.
When the trim command is issued, the SSD to be tested executes the trim command, all the data of the corresponding LBA are set to be 0xff, namely the content of the LBA data is invalid data. And after the trim command is successfully issued, setting the corresponding bit in the trim table to be 1.
When the write command is issued, the SSD solid state disk to be tested executes the write command, and the corresponding LBA writes related data, that is, the LBA data content is valid data. And after the write command is successfully issued, setting the corresponding bit in the trim table to be 0.
That is, if the bit is 1, it indicates that the corresponding LBA is invalid data, and if the bit is 0, it indicates that the corresponding LBA is valid data. It should be noted that the trim table and the SSD solid state disk to be tested may be formatted before the test, that is, all bits of the trim table are set to 1, and all LBA data of the SSD solid state disk to be tested are invalid.
And S105, performing trim data verification test according to the trim table recording result.
And after all the commands are issued, entering a testing stage, and verifying the validity of trim data verification of the SSD solid state disk to be tested.
Sequentially reading the LBA data content of the SSD solid state disk to be tested, searching bit bits in the corresponding trim table after successful reading, and if the data content of all the LBAs is consistent with the corresponding bit bits, indicating that trim data verification of the SSD solid state disk to be tested is effective and normal. If the data content of the LBA does not conform to the corresponding bit, it indicates that the trim data check of the SSD solid state disk to be tested is invalid and abnormal. It should be noted that if a bit is 1, all the read corresponding LBA data should be 0xff, and the data is invalid data, and if a bit is 0, the read corresponding LBA data should be valid data. Namely, the bit corresponding to the invalid data is 1, the bit corresponding to the valid data is 0, and if all the bits are normal, the trim data of the SSD solid state disk to be tested is verified normally.
In this embodiment, the influence of power on and power off on the data verification of the SSD solid state disk may also be added. Specifically, in step S104, during the instruction issuing process (it should be noted that, after the instruction issuing is completed), the controlled device is powered down, and is powered up again after the power down, and then the verification process in step S105 is performed.
Example two
As shown in fig. 2, the present embodiment provides a trim data verification test apparatus for an SSD solid state disk based on the first embodiment, which includes the following functional modules to implement a trim data verification test for the SSD solid state disk.
the trim table creation module 101: creating a trim table, wherein the trim table comprises a plurality of recording bits, the number of the recording bits is the same as the number of the logic block addresses of the SSD to be tested, and one recording bit corresponds to one logic block address;
the identification information recording module 102: when a trim command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in a trim table as an invalid identifier; when a write command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in the trim table as an effective identifier;
the test module 103: and after all the commands are issued, reading the data content of each logic block address of the SSD solid state disk to be tested, verifying the identification information of each corresponding recording bit in the trim table, and if the data content of all the logic block addresses is consistent with the identification information of the recording bit in the corresponding trim table, normally checking trim data of the SSD solid state disk to be tested.
The trim table created by the trim table creating module 101 is a continuous memory space; one bit of the memory space is a recording bit. When the identification information recording module 102 issues a trim command to the SSD solid state disk to be tested, setting a corresponding recording bit in the trim table as an invalid identification, which means setting a corresponding bit as 1; when the identification information recording module 102 issues a write command to the SSD solid state disk to be tested, the corresponding recording bit in the trim table is set as an effective identification, which means that the corresponding bit is set as 0.
That is, the bit is 1, the data corresponding to the LBA should be invalid data after the trim command is executed, the bit is 0, and the data corresponding to the LBA should be valid data after the write command is executed. If the LBA data verified by the test module 103 and the record bit of the trim table do not conform to the above correspondence, it is indicated that the trim data of the SSD solid state disk to be tested is verified to have a bug and is in an abnormal state.
The device also includes a power up and power down module 104: and in the command issuing process of the SSD solid state disk to be tested, carrying out power-down and power-up operations on the host where the SSD solid state disk to be tested is located. And executing the module to realize the test of a trim + write + power-on and power-off (normal or abnormal) scene.
EXAMPLE III
The embodiment provides a trim data verification test system of an SSD solid state disk, which includes a controller and a controlled machine, wherein the controller is configured with the apparatus of the second embodiment, and the controlled machine is provided with the SSD solid state disk to be tested. And running the device in the second embodiment on the control machine, and executing the method in the first embodiment to realize the test of trim data verification of the SSD solid state disk.
The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any non-inventive changes that can be made by those skilled in the art and several modifications and amendments made without departing from the principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A trim data verification test method of an SSD is characterized by comprising the following steps:
creating a trim table, wherein the trim table comprises a plurality of recording bits, the number of the recording bits is the same as the number of the logic block addresses of the SSD to be tested, and one recording bit corresponds to one logic block address;
when a trim command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in a trim table as an invalid identifier; when a write command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in the trim table as an effective identifier;
and after all the commands are issued, reading the data content of each logic block address of the SSD solid state disk to be tested, verifying the identification information of each corresponding recording bit in the trim table, and if the data content of all the logic block addresses is consistent with the identification information of the recording bit in the corresponding trim table, normally checking trim data of the SSD solid state disk to be tested.
2. The trim data verification test method of the SSD solid state disk of claim 1, wherein the trim table is a continuous memory space.
3. The trim data verification test method of the SSD solid state disk of claim 2, wherein one bit of the memory space is one recording bit.
4. The trim data verification test method of the SSD solid state disk of claim 3,
when a trim command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in a trim table as an invalid identifier, namely setting the corresponding bit at a position 1;
when a write command is issued to the SSD solid state disk to be tested, the corresponding recording bit in the trim table is set as an effective identifier, namely the corresponding bit position is set to be 0.
5. The trim data verification test method of the SSD solid state disk according to any one of claims 1 to 4, wherein in the process of issuing a command to the SSD solid state disk to be tested, the host where the SSD solid state disk to be tested is located is powered down and powered up.
6. The method for checking and testing trim data of the SSD solid state disk according to claim 5, further comprising a test scenario construction process, wherein the test scenario construction process comprises:
connecting the control machine with a controlled machine, and installing an SSD solid state disk to be tested on the controlled machine;
in the method, a trim table is created on a control machine.
7. A trim data verification test device of an SSD is characterized by comprising,
a trim table creation module: creating a trim table, wherein the trim table comprises a plurality of recording bits, the number of the recording bits is the same as the number of the logic block addresses of the SSD to be tested, and one recording bit corresponds to one logic block address;
an identification information recording module: when a trim command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in a trim table as an invalid identifier; when a write command is issued to the SSD solid state disk to be tested, setting a corresponding recording bit in the trim table as an effective identifier;
a test module: and after all the commands are issued, reading the data content of each logic block address of the SSD solid state disk to be tested, verifying the identification information of each corresponding recording bit in the trim table, and if the data content of all the logic block addresses is consistent with the identification information of the recording bit in the corresponding trim table, normally checking trim data of the SSD solid state disk to be tested.
8. The trim data verification test device of the SSD solid state disk of claim 7, wherein the trim table created by the trim table creation module is a continuous memory space; one bit of the memory space is a recording bit;
when the identification information recording module issues a trim command to the SSD solid state disk to be tested, setting a corresponding recording bit in a trim table as an invalid identification, namely setting a corresponding bit as 1;
when the identification information recording module issues a write command to the SSD solid state disk to be tested, the corresponding recording bit in the trim table is set to be an effective identification, namely the corresponding bit is set to be 0.
9. The trim data verification test device of the SSD solid state disk of claim 8, further comprising,
powering on and powering off the module: and in the command issuing process of the SSD solid state disk to be tested, carrying out power-down and power-up operations on the host where the SSD solid state disk to be tested is located.
10. A trim data verification test system of an SSD solid state disk is characterized by comprising a control machine and a controlled machine, wherein the control machine is provided with the device of any one of claims 7 to 9, and the SSD solid state disk to be tested is installed on the controlled machine.
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| CN117075810A (en) * | 2023-08-18 | 2023-11-17 | 武汉麓谷科技有限公司 | ZNS solid state disk-based data management method |
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