WO2019210844A1 - Anomaly detection method and apparatus for storage device, and distributed storage system - Google Patents
Anomaly detection method and apparatus for storage device, and distributed storage system Download PDFInfo
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- WO2019210844A1 WO2019210844A1 PCT/CN2019/085128 CN2019085128W WO2019210844A1 WO 2019210844 A1 WO2019210844 A1 WO 2019210844A1 CN 2019085128 W CN2019085128 W CN 2019085128W WO 2019210844 A1 WO2019210844 A1 WO 2019210844A1
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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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- 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
- G06F3/0614—Improving the reliability of storage systems
- G06F3/0619—Improving the reliability of storage systems in relation to data integrity, e.g. data losses, bit errors
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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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0644—Management of space entities, e.g. partitions, extents, pools
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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
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
Definitions
- the present application relates to the field of storage technologies, and in particular, to a storage device abnormality detecting method and apparatus, and a distributed storage system.
- the distributed storage system may include: a management device, and a plurality of storage devices managed by the management device.
- the client can store data in the distributed storage system through the management device and the storage device.
- the management device can access multiple storage devices through the network, and can store data in the multiple storage devices.
- the data to be stored may be sent by the client to the management device, so that the management device writes the data to the storage device.
- a storage device when a storage device is abnormal (for example, the storage device is dropped or damaged), the management device cannot know that the storage device is abnormal. If the management device writes data on the storage device at this time, the Data is lost, so there is a need for a way to detect if a storage device is abnormal.
- the present invention provides a storage device abnormality detecting method and device, and a distributed storage system, which can solve the problem that the management device cannot know the abnormality of the storage device.
- the technical solution is as follows:
- a storage device anomaly detection method is provided, which is applied to a management device, where a part of the storage area includes n storage areas, n ⁇ 1, and the method includes:
- the first preset file includes: first target data and first calibration data thereof;
- the storage device When it is determined that at least m storage areas of the n storage areas are abnormal, the storage device is determined to be abnormal, 1 ⁇ m ⁇ n.
- the method further includes:
- the check data read from the first storage area is the same as the second check data, and the second check data is used to cover the first check data in the first storage area When it fails, it is determined that the first storage area is abnormal.
- the method further includes:
- the first storage area is determined to be abnormal.
- the first verification data is processed by using the preset processing manner to obtain the first target data
- the second verification data is processed by using the preset processing manner to process the second target data
- the storage device has a plurality of consecutive storage addresses, and the n storage areas include a head, a middle, and a tail of the plurality of storage addresses.
- the storage device includes an independent redundant disk array RAID, and the size of the preset file is greater than or equal to a size of one strip in the RAID.
- the storage device includes a storage area other than the n storage areas, and the method further includes:
- the determining trigger condition includes: a read operation on the other storage area fails, from the other storage At least one of a file error read in the area and a write operation failure to the other storage area.
- a storage device abnormality detecting device which is applied to a management device, and a part of the storage area of the storage device includes n storage areas, n ⁇ 1, and the storage device abnormality detecting device includes:
- the module Writing to the module, writing n preset files to the n storage areas, wherein the first preset file is any one of n preset files, and the first preset file is written first a storage area, the first preset file includes: first target data and first calibration data thereof;
- a generating module configured to generate second verification data of the second target data when the read operation on the first storage area is successful, where the second target data is the first in the first storage area Data obtained by reading a target data;
- a first determining module configured to determine that the first storage area is abnormal when the second check data is different from the third check data, where the third check data is for the first storage area Data obtained by the first verification data in the read operation;
- a second determining module configured to determine that the storage device is abnormal when determining that at least m storage areas of the n storage areas are abnormal, 1 ⁇ m ⁇ n.
- the storage device abnormality detecting device further includes:
- a third determining module configured to: the check data read from the first storage area is the same as the second check data, and use the second check data to cover the first storage area When the first verification data fails, the first storage area is determined to be abnormal.
- the storage device abnormality detecting device further includes:
- a fourth determining module configured to determine that the first storage area is abnormal when a read operation on the first storage area fails.
- the first verification data is processed by using the preset processing manner
- the second verification data is processed by using the preset processing manner. get.
- the storage device has a plurality of consecutive storage addresses, and the n storage areas include a head, a middle, and a tail of the plurality of storage addresses.
- the storage device includes an independent redundant disk array RAID, and the size of the preset file is greater than or equal to a size of one strip in the RAID.
- the storage device includes a storage area other than the n storage areas, and the storage device abnormality detecting device further includes:
- a first reading module configured to perform the reading operation on the first storage area every preset time period
- a second reading module configured to perform the read operation on the first storage area when the other storage area satisfies a judgment trigger condition, where the determining trigger condition comprises: a read operation on the other storage area fails At least one of a file error read from the other storage area and a write operation failure to the other storage area.
- a distributed storage system including a management device and a plurality of storage devices, and the management device includes the storage device abnormality detecting device described above.
- a computer device comprising:
- One or more processors are One or more processors.
- the memory stores one or more programs, the one or more programs being configured to be executed by the one or more processors to perform the storage device anomaly detection method described above.
- a computer readable storage medium having stored therein code instructions for execution by a processor to perform the storage device anomaly detection method described above.
- a computer program product that, when executed on a computer, causes the computer to perform the storage device anomaly detection method described above.
- a chip in yet another aspect, includes programmable logic circuitry and/or program instructions for implementing the above described memory device anomaly detection method when the chip is in operation.
- the present application provides a storage device abnormality detecting method, device, and distributed storage system.
- n pre-writes can be written in n storage areas in a partial storage area in the storage device.
- Setting a file, and the first preset file is any one of the n preset files, the first preset file is written into the first storage area, and the first preset file includes: the first target data and the first Verify the data.
- the second check data of the second target data read from the first storage area is generated.
- the third verification data is data obtained by performing a read operation on the first verification data in the first storage area, and when the third verification data is different from the second verification data, the first storage area abnormality may be determined.
- the storage device is abnormal, thereby detecting the abnormality of the storage device.
- FIG. 1 is a schematic structural diagram of a distributed storage system according to an embodiment of the present application.
- FIG. 2 is a flowchart of a method for detecting an abnormality of a storage device according to an embodiment of the present application
- FIG. 3 is a schematic diagram of a storage device according to an embodiment of the present application.
- FIG. 4 is a schematic diagram of another storage device provided by an embodiment of the present application.
- FIG. 5 is a schematic diagram of still another storage device according to an embodiment of the present disclosure.
- FIG. 6 is a schematic diagram of still another storage device according to an embodiment of the present application.
- FIG. 7 is a flowchart of a method for detecting an abnormality of a first storage area according to an embodiment of the present application
- FIG. 8 is a schematic structural diagram of an independent redundant disk array according to an embodiment of the present disclosure.
- FIG. 9 is a schematic structural diagram of a storage device abnormality detecting apparatus according to an embodiment of the present application.
- FIG. 10 is a schematic structural diagram of another storage device abnormality detecting apparatus according to an embodiment of the present disclosure.
- FIG. 11 is a schematic structural diagram of still another storage device abnormality detecting apparatus according to an embodiment of the present application.
- FIG. 12 is a schematic structural diagram of still another storage device abnormality detecting apparatus according to an embodiment of the present application.
- FIG. 13 is a schematic structural diagram of a storage device abnormality detecting apparatus according to another embodiment of the present disclosure.
- FIG. 14 is a schematic structural diagram of a computer device according to an embodiment of the present application.
- FIG. 1 shows a schematic structural diagram of a distributed storage system 10.
- the distributed storage system 10 may include: a management device 101, and a plurality of storage devices 102 managed by the management device 101.
- the client 103 is capable of storing data in the distributed storage system 10 through the management device 101 and the storage device 102.
- the multiple storage devices may include: a disk (English DISK), a solid state disk (English: Solid State Drives; SSD), and an independent redundant disk array (English: Redundant Array of Independent Disks; RAID).
- Storage area network (English: Storage Area Network; referred to as: SAN, also known as IP SAN), fiber storage area network (English: Fibre Channel Storage Area Network; referred to as: FC SAN) and network attached storage (English: Network Attached Storage; Abbreviation: NAS) and other storage devices.
- the client 103 can be deployed on the terminal, and the terminal can be an electronic device such as a mobile phone, a notebook computer, a desktop computer, a tablet computer or a smart TV.
- the management device 101 can be a server, or the management device 101 can be a server cluster composed of a plurality of servers.
- the connection between the client and the management device may be through a wired network or a wireless network.
- the wired network may include, but is not limited to, a universal serial bus (English: Universal Serial Bus; USB).
- the wireless network may include but is not limited to: Wireless Fidelity (English: Wireless Fidelity; abbreviation: WIFI), Bluetooth, infrared, Zigbee (English: Zigbee), data network, etc.
- the data to be stored may be sent to the management device 101 through the client 103, so that the management device 101 writes the data to the storage device 102. If a storage device is abnormal (such as the storage device is dropped or damaged), the management device cannot read the data on the storage device correctly, or the data cannot be written to the storage device, resulting in data loss. Therefore, determining whether a storage device is abnormal is critical to a distributed storage system.
- FIG. 2 is a flowchart of a method for detecting an abnormality of a storage device according to an embodiment of the present application.
- the method can be used in the management device 101 in FIG. 1, as shown in FIG. 2, the method includes:
- Step 201 Write n preset files to n storage areas in a partial storage area in the storage device, n ⁇ 1. Go to step 202.
- the storage device involved in the embodiment of the present application may be any one of the distributed storage systems shown in FIG. 1 .
- the storage device may have a plurality of consecutive storage addresses, which may be divided into a plurality of storage areas, each storage area including at least one storage address.
- the part of the storage area may include n storage areas of the plurality of storage areas, n ⁇ 1.
- the management device may write n preset files to the n storage areas, that is, the management device.
- a preset file can be written to each of the n storage areas.
- the first preset file is any one of the n preset files, the first preset file is written into the first storage area in the n storage areas, the first preset The file may include: first target data and first calibration data thereof, and the first verification data is data obtained by processing the first target data by using a preset processing manner.
- the preset processing mode may be the fifth version of the message digest algorithm (English: Message-Digest Algorithm 5; MD5 for short).
- the management device may process the first target data by using MD5 to obtain the first An MD5 code of a target data, that is, a first parity data, and the first parity data and the target data are both written into the first storage area.
- the first storage area includes a first area and a second area, the first target data may be written into the first area in the first storage area, and the first verification data may be written into the second area in the first storage area.
- the management device may store the n preset files in the head, the middle, and the tail of the multiple storage addresses, respectively.
- the head and the tail of the plurality of storage addresses are respectively two-part storage addresses located at two ends of the plurality of storage addresses
- the middle of the plurality of storage addresses is the head and the tail located in the plurality of storage addresses.
- a portion of the storage address, and among the header, the middle, and the tail of the plurality of storage addresses, any two adjacent storage address intervals have at least one storage address.
- the storage device 30 has a plurality of consecutive storage addresses a, and a part of the storage areas in which the management device can be divided into a plurality of storage areas (not shown in FIG. 3) Write three preset files (such as preset file F1, preset file F2 and preset file F3) such that the preset file F1 is stored in the header of a plurality of storage addresses, and the preset file F2 is stored in the plurality of In the middle of the storage address, the preset file F3 is stored at the end of the plurality of storage addresses.
- the plurality of preset files may be evenly distributed among the plurality of storage addresses.
- only one storage address is included in the head, the middle, and the tail, and only one preset file is stored in each of the head, the middle, and the tail, and the three preset files are in the storage device.
- the uniform distribution in the storage address is an example.
- the three preset files may be files of different sizes, and the head, the middle, and the tail may include more than one storage address.
- the preset file F1 is stored in multiple storage addresses. Two storage addresses located at the head, the preset file F3 stores two storage addresses at the tail among the plurality of storage addresses, and the preset file F2 stores one storage address located at the middle among the plurality of storage addresses.
- the plurality of preset files may not be evenly distributed among the plurality of storage addresses.
- the number of storage addresses between the preset file F1 and the preset file F2 may be more than the preset file.
- the management device can only write a preset file to the storage device, and the one preset file can be written to any storage address in the storage device, or any contiguous plurality of storage addresses.
- the one preset file F1 may be located at the head of a plurality of storage addresses of the storage device (as shown in FIG. 6), or the preset file may also be located in other parts of the plurality of storage addresses (such as the middle or the tail). This embodiment of the present application does not limit this.
- Step 202 Determine whether at least m storage areas in the n storage areas are abnormal, 1 ⁇ m ⁇ n. When at least m storage areas of the n storage areas are abnormal, step 203 is performed; when the number of abnormal storage areas in the n storage areas is less than m, step 202 is continued.
- the first storage area is any one of the n storage areas.
- the process of determining whether the first storage area is abnormal by the management device may include:
- Step 2021 Perform a read operation on the first storage area.
- step 2022 is performed; when the read operation fails, step 2026 is performed.
- the management device may perform a read operation on the first storage area, and determine whether the first storage area is abnormal according to whether the read operation succeeds, wherein the reading operation on the first storage area is to read the storage in the first storage area. The operation of the data.
- Step 2022 Generate second verification data of the second target data read from the first storage area. Go to step 2023.
- the second target data and the third check data may be read from the first storage area, and the second target data is the first target data in the first storage area. And performing data obtained by the read operation, wherein the third verification data is data obtained by performing a read operation on the first verification data in the first storage area. That is, the second target data is data read from the first area in the first storage area, and the third verification data is data read from the second area in the first storage area.
- the second target data may be processed by using a preset processing manner to obtain the second verification data.
- the read second target data may be the same as the actually stored first target data, and the second target data may also be different from the actually stored first target data, and the read third check data may be The third check data may be different from the first check data that is actually stored, which may be different from the first check data that is actually stored.
- Step 2023 Determine whether the second verification data and the third verification data are the same. When the second verification data is the same as the third verification data, step 2024 is performed; when the second verification data is different from the third verification data, step 2026 is performed.
- the management device may compare the second verification data with the third verification data read from the second area in the first storage area to determine the second verification data and Whether the third parity data is the same, thereby determining whether the data read from the first storage area is correct.
- the two verification data obtained by processing two identical data by using the preset processing manner are also the same, and the two verification data obtained by processing two different data by using the preset processing manner are also different. .
- the second check data and the third check data may be used. Whether they are the same, it is determined whether the second target data is identical to the actually stored first target data. If the second verification data is the same as the third verification data, the second target data may be considered to be the same as the first target data, that is, the data read from the first area in the first storage area is correct, thereby determining The data read by the first storage area is correct; if the second verification data is different from the third verification data, it is considered that the data read from the first area is incorrect, thereby determining the data error read from the first storage area. .
- the second parity data is the same as the first parity data
- the second parity data is determined Whether the third check data is the same, that is, whether the first check data and the third check data are the same. If the first check data is the same as the third check data, determining that the data read from the second area is correct, and determining that the data read from the first storage area is correct; if the first check data and the third If the verification data is different, it is considered that the data read from the second area is incorrect, thereby determining the data error read from the first storage area.
- the second target data is different from the first target data, and the first check data is different from the third check data, the possibility that the second check data and the third check data are the same is unlikely, so
- the second verification data is the same as the third verification data, it is considered that the data read from the first storage area is correct; when the second verification data is different from the third verification data, it is considered to be from the first storage area. The data read is incorrect.
- Step 2024 Perform a coverage operation on the first verification data in the first storage area by using the second verification data. If the overlay operation is successful, step 2025 is performed; if the overlay operation fails, step 2026 is performed.
- the management device determines in step 2023 that the second verification data is the same as the third verification data, it may be considered that the data is correctly read from the first storage area, that is, it is determined from the first storage area.
- the data can be read normally, and then the management device can determine whether the data can be normally written in the first storage area.
- the management device may perform a write operation on the first storage area, that is, an operation of storing data into the first storage area.
- the management device may perform the overlay operation on the first check data in the first storage area by using the second check data, that is, the operation of writing the second area in the first storage area to the second check data. If the overlay operation fails, the management device may determine that the second verification data cannot be written to the second area, thereby determining that the data cannot be written in the first storage area; if the overlay operation is successful, the management device may determine the second check The data is successfully written to the second area, thereby determining that data can be written in the first storage area.
- the second check data is the same as the third check data read from the second area at this time, it can be considered that the third check data and the second check data currently written in the second area are both actually stored.
- the first check data is the same, and the overlay operation in step 205 does not change the data stored in the first storage area.
- Step 2025 Determine that the first storage area is normal.
- the management device succeeds in the read operation on the first storage area, the data read from the first storage area is correct, and when the write operation to the first storage area is successful, the first storage area may be determined to be normal.
- Step 2026 Determine that the first storage area is abnormal.
- the management device may determine that the first storage area is abnormal when the read operation to the first storage area fails, the data read from the first storage area is incorrect, or the write operation to the first storage area fails.
- the management device may perform a read operation on the first storage area every preset time period, or when the storage area other than the n storage areas in the storage device meets the judgment trigger condition , the first storage area is read. That is, in step 202, the management device may determine whether at least m storage areas in the n storage areas are abnormal every predetermined time period.
- the determining trigger condition may include: a read operation to the other storage area, a file error read from the other storage area, and at least one of a write operation failure to the other storage area.
- the management device may determine that the storage device satisfies the judgment trigger condition. If the read operation is successful, the management device may determine whether the read file is incorrect. If the read file is incorrect, the management device may determine that the storage device satisfies the judgment trigger condition; if the read file is correct, then the management The device can determine that the storage device does not satisfy the judgment trigger condition. In addition, if the management device fails to perform a write operation on the other storage area in the storage device, the management device may also determine that the storage device satisfies the judgment trigger condition; if the write operation is successful, the management device may determine that the storage device is not satisfied. Determine the trigger condition.
- Step 203 Determine that the storage device is abnormal.
- the management device may be abnormal, and then the management device may prohibit data reading and writing on the storage device.
- the management device may notify the worker to repair the storage device after determining the abnormality of the storage device, or send a prompt message to the client requesting to read or write data on the storage device, or the management device may perform other operations. This embodiment of the present application does not limit this.
- a preset file is stored in only one storage area in the storage device. If the storage area is abnormal, the management device may determine that the entire storage device is abnormal; at 2 ⁇ m ⁇ n When a storage device stores a preset file in a plurality of storage areas, the management device determines that the storage device is abnormal when determining that at least m storage areas in the n storage areas are abnormal, and the value of the m can be determined by The user determines it by himself. In addition, since the storage device may continue to be used when a part of the storage areas of the n storage areas are abnormal, m may also be equal to n, that is, the management device may determine that the n storage areas are abnormal. The storage device is abnormal to improve the accuracy of determining whether the storage device is abnormal.
- a distributed storage system is a system for connecting a management device to multiple storage devices through a network.
- the abnormality of the storage device usually includes: the storage device is disconnected (that is, disconnected from the management device), and the storage device is damaged. (that is, the storage device is not available) and at least one of the storage device backend storage exception (that is, the stored data error, the data can be read or written but the data read and written is not normal).
- the management device cannot be known in time.
- the management device if the management device needs to write data to the storage device, the management device writes the data to the address before the storage device goes offline, thereby causing data loss; if the management device needs to read from the storage device, Data, the management device will read at the address where the storage device is not offline, and may not be able to read the data or read the wrong data, so that the efficiency of reading the correct data is low.
- the management device may write n preset files to n storage areas in a part of the storage area of the storage device, and may complete the preset trigger period or when the storage device satisfies the judgment trigger condition. It is determined whether at least m storage areas of the n storage areas are abnormal, and when at least m storage areas of the n storage areas are abnormal, the storage device abnormality is determined, thereby detecting the abnormality of the storage device.
- the storage device in the embodiment of the present application may be any storage device such as a DISK, SSD, RAID, SAN, FC SAN, NAS, cloud storage, and object storage.
- RAID is a hard disk group (also called a logical hard disk) formed by combining different independent hard disks (also called physical hard disks) in different ways. The storage performance of RAID is higher than that of a single hard disk, and data can be performed. Backup.
- Each hard disk in RAID can be a disk (English: disk).
- step 201 the management device writes n preset files of n storage areas in the RAID, and the size of each preset file needs to be greater than or equal to the size of one stripe (also called stripe) in the RAID, so as to pass It is determined whether at least m storage areas in the n storage areas are abnormal, and it is possible to accurately determine whether the RAID is abnormal.
- each stripe in the RAID may include: x of the x disks, that is, The strip includes one memory block per disk.
- x-1 memory blocks are used to store data
- the remaining one memory block is used to store verification information of the data
- the size of the stripe is the size of the x-1 memory blocks. The amount of data stored.
- Each disk in the RAID can include i storage blocks, i ⁇ 2.
- RAID is a RAID 5 composed of three disks (RAID 5 is a RAID)
- three disks in the RAID 5 are disks A, B, and C shown in FIG. 8, assuming each of the RAID 5
- disk A includes storage blocks A 1 , A 2 , A 3 , A 4 , and A 5
- disk B includes storage blocks B 1 , B 2 , and B 3 .
- the disk C includes memory blocks C 1 , C 2 , C 3 , C 4 , C 5 .
- each storage block may be a storage address of the storage device, and consecutive storage addresses of the RAID may be: A 1 , B 1 , C 1 , A 2 , B 2 , C 2 , A 3 , B 3 , C 3 , A 4 , B 4 , C 4 , A 5 , B 5 and C 5 addresses.
- the management device can write three to the other storage addresses in the RAID 5 .
- the preset files f1, f2, and f3, and the sizes of the three preset files f1, f2, and f3 are all the size of one stripe.
- the file management apparatus may f1 preset memory addresses written into the memory block A and the block B 1 is stored in memory address 1, the file f2 preset memory addresses written into the memory block and the memory block B 3 C 3 is the memory address, The preset file f3 is written to the memory address of the memory block A 5 and the memory address of the memory block C 5 . Further, the preset file f1 is stored in the header of the plurality of storage addresses, the preset file f2 is stored in the middle of the plurality of storage addresses, and the preset file f3 is stored in the tail of the plurality of storage addresses.
- the target data in each preset file can be stored in the storage address of the two storage blocks.
- the embodiment of the present application only uses the storage device as a RAID, and the RAID is a RAID 5 composed of three independent disks, each disk includes five storage blocks, and three preset files are written into the RAID as an example.
- the storage device may also include four, five or more disks, each of which may also include eight, nine or more storage blocks, and four or five presets may also be written in the storage device.
- the document is not limited in this embodiment.
- the management device when the management device writes data to the RAID, if the data volume of the data is greater than the size of one stripe, the management device may sequentially write the data into the plurality of storages according to the stripe. address.
- n preset files may be written in n storage areas in a partial storage area in the storage device, and the first preset file is n pre-prepared files.
- the first preset file is written into the first storage area, and the first preset file includes: the first target data and the first check data thereof.
- the second check data of the second target data read from the first storage area is generated.
- the third verification data is data obtained by performing a read operation on the first verification data in the first storage area, and when the second verification data is different from the third verification data, the first storage area abnormality may be determined.
- the storage device abnormality may be determined, 1 ⁇ m ⁇ n, thereby implementing detection of the storage device abnormality.
- the management device may no longer write data to the storage device, preventing data loss caused by the management device writing data to the abnormal storage device.
- FIG. 9 is a schematic structural diagram of a storage device abnormality detecting apparatus according to an embodiment of the present application.
- the storage device abnormality detecting device 90 is applied to the management device 101 in FIG. 1.
- the partial storage area in the storage device includes n storage areas, n ⁇ 1.
- the storage device abnormality detecting device 90 includes:
- the writing module 901 is configured to write n preset files to the n storage areas, where the first preset file is any preset file among the n preset files, and the first preset file is written into the first preset file.
- the first preset file includes: first target data and first calibration data thereof.
- a generating module 902 configured to generate second verification data of the second target data read from the first storage area when the read operation on the first storage area is successful, where the second target data is in the first storage area The data obtained by the first target data for the read operation;
- the first determining module 903 is configured to determine that the first storage area is abnormal when the second check data is different from the third check data, where the third check data is the first check data in the first storage area The data obtained by the read operation.
- the second determining module 904 is configured to determine that the storage device is abnormal when determining that at least m storage areas in the n storage areas are abnormal, 1 ⁇ m ⁇ n.
- the writing module may write n preset files in n storage areas in a part of the storage area in the storage device, and the first preset file
- the first preset file For any preset file of the n preset files, the first preset file is written into the first storage area, the first preset file includes: first target data and first calibration data thereof; and the generation module may be in the pair
- the second check data of the second target data read from the first storage area is generated.
- the third verification data is data obtained by performing a read operation on the first verification data in the first storage area; the first determining module may determine the first storage area when the second verification data is different from the third verification data. If the abnormality is determined, the second determining module determines that the storage device is abnormal when at least m storage areas of the n storage areas are abnormal, thereby detecting the abnormality of the storage device.
- FIG. 10 is a schematic structural diagram of another storage device abnormality detecting apparatus according to an embodiment of the present application. As shown in FIG. 10, on the basis of FIG. 9, the storage device abnormality detecting apparatus further includes:
- the third determining module 905 is configured to: when the check data read from the first storage area is the same as the second check data, and the second check data is used to cover the first check data in the first storage area, failing , determining that the first storage area is abnormal.
- FIG. 11 is a schematic structural diagram of still another storage device abnormality detecting apparatus according to an embodiment of the present application. As shown in FIG. 11, on the basis of FIG. 9, the storage device abnormality detecting apparatus further includes:
- the fourth determining module 906 is configured to determine that the first storage area is abnormal when the read operation on the first storage area fails.
- the first verification data is processed by using a preset processing manner to obtain the first target data
- the second verification data is processed by using a preset processing manner to process the second target data.
- the storage device has a plurality of consecutive storage addresses, and the n storage areas include a head, a middle, and a tail of the plurality of storage addresses. If the header includes the first 30% of the plurality of storage addresses, the tail includes the last 30% of the plurality of storage addresses, and the middle portion includes the storage address between the head and the tail of the plurality of storage addresses. Part of the storage address.
- the management device may store the n preset files in the head, middle, and tail of the plurality of storage addresses, respectively.
- the storage address of any preset file stored in the header may be any storage address in the header or any number of consecutive storage addresses
- the storage address of any preset file stored in the middle may be any in the middle.
- a storage address or any number of consecutive storage addresses, the storage address of any of the preset files stored at the tail may be any storage address in the tail or any number of consecutive storage addresses.
- the storage device includes an independent redundant disk array RAID, and the size of the preset file is greater than or equal to the size of one stripe in the RAID.
- the disk in the storage device is usually striped, that is, the continuous data to be stored in the disk is divided into a plurality of data blocks, and the obtained data blocks are separately stored in different disks.
- Each disk includes a plurality of memory blocks, each of which is stored in one memory block, and adjacent data blocks are stored in memory blocks of different disks.
- a stripe in the storage device includes one of each of the disks in the storage device. One strip stores continuous data, and the size of one strip is the amount of data that the strip can store.
- the storage device has a storage area other than the n storage areas.
- the storage device abnormality detecting apparatus further includes:
- the first reading module 907 is configured to perform a read operation on the first storage area every preset time period.
- the storage device abnormality detecting apparatus further includes:
- the second reading module 908 is configured to perform a read operation on the first storage area when the other storage area satisfies the determination trigger condition, and determine that the trigger condition includes: the read operation to the other storage area fails, and is read from the other storage area. File error, and at least one of the failures of write operations to other storage areas.
- the management device can determine that the storage device is abnormal when it is determined that some storage areas (that is, n storage areas) in the storage device are abnormal, thereby improving the accuracy of determining whether the storage device is abnormal.
- the writing module may write n preset files in n storage areas in a part of the storage area in the storage device, and the first preset file
- the first preset file For any preset file of the n preset files, the first preset file is written into the first storage area, the first preset file includes: first target data and first calibration data thereof; and the generation module may be in the pair
- the second check data of the second target data read from the first storage area is generated.
- the third verification data is data obtained by performing a read operation on the first verification data in the first storage area; the first determining module may determine the first storage area when the second verification data is different from the third verification data. If the abnormality is determined, the second determining module determines that the storage device is abnormal when at least m storage areas of the n storage areas are abnormal, thereby detecting the abnormality of the storage device.
- the embodiment of the present application provides a distributed storage system, which may be the distributed storage system shown in FIG. 1 , where the distributed storage system includes a management device and multiple storage devices, and the management device may include a map. 8 to the storage device abnormality detecting device shown in any of FIG.
- the computer device 000 can be used in a management device in a distributed storage system.
- the computer device 000 includes a central processing unit (CPU) 001.
- the server 000 also includes a basic input/output system (I/O system) 006 that facilitates transfer of information between various devices within the computer, and mass storage for storing operating system 013, applications 014, and other program modules 015.
- I/O system basic input/output system
- the basic input/output system 006 includes a display 008 for displaying information and an input device 009 such as a mouse, a keyboard for inputting information by a user.
- the display 008 and the input device 009 are both connected to the central processing unit 001 through an input/output controller 010 connected to the system bus 005.
- the basic input/output system 006 can also include an input output controller 010 for receiving and processing input from a plurality of other devices, such as a keyboard, mouse, or electronic stylus.
- input/output controller 010 also provides output to a display screen, printer, or other type of output device.
- the mass storage device 007 is connected to the central processing unit 001 by a mass storage controller (not shown) connected to the system bus 005.
- the mass storage device 007 and its associated computer readable medium provide non-volatile storage for the server 000. That is, the mass storage device 007 can include a computer readable medium (not shown) such as a hard disk or a CD-ROM drive.
- the computer readable medium can include computer storage media and communication media.
- Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.
- Computer storage media include RAM, ROM, EPROM, EEPROM, flash memory or other solid state storage technologies, CD-ROM, DVD or other optical storage, tape cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices.
- RAM random access memory
- ROM read only memory
- EPROM Erasable programmable read-only memory
- EEPROM electrically erasable programmable read-only memory
- the server 000 can also be operated by a remote computer connected to the network through a network such as the Internet. That is, the server 000 can be connected to the network 012 through the network interface unit 011 connected to the system bus 005, or the network interface unit 011 can be used to connect to other types of networks or remote computer systems (not shown). .
- the memory further includes one or more programs, the one or more programs being stored in a memory, and the central processor 001 implementing the device anomaly detection method illustrated in FIG. 2 by executing the one or more programs.
- non-transitory computer readable storage medium comprising instructions, such as a memory comprising instructions executable by a processor of a server to perform the storage device illustrated in various embodiments of the present application Anomaly detection method.
- the non-transitory computer readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.
- the embodiment of the present application further provides a computer program product, when the computer program product is run on a computer, causing the computer to execute the above-mentioned storage device abnormality detecting method.
- the embodiment of the present application further provides a chip, which includes programmable logic circuits and/or program instructions, and is used to implement the above-mentioned storage device abnormality detecting method when the chip is running.
- the storage device abnormality detecting device detects the abnormality of the storage device
- only the division of each functional module is described as an example.
- the foregoing function may be assigned to different functions according to requirements.
- the module is completed, that is, the internal structure of the storage device abnormality detecting device is divided into different functional modules to complete all or part of the functions described above.
- the embodiment of the method provided by the embodiment of the present application can refer to the corresponding device embodiment, and the embodiment of the present application does not limit this.
- the sequence of the steps of the method embodiments provided by the embodiments of the present application can be appropriately adjusted, and the steps can be correspondingly increased or decreased according to the situation. Any person skilled in the art can easily think of changes within the technical scope disclosed in the present application. The method should be covered by the scope of protection of the present application, and therefore will not be described again.
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Abstract
Description
Claims (19)
- 一种存储设备异常检测方法,其特征在于,应用于管理设备,所述存储设备中的部分存储区域包括n个存储区域,n≥1,所述方法包括:A storage device abnormality detecting method is applied to a management device, and a part of the storage area of the storage device includes n storage areas, n≥1, and the method includes:向所述n个存储区域中写入n个预置文件,其中,第一预置文件为n个预置文件中的任一预置文件,第一预置文件写入第一存储区域,所述第一预置文件包括:第一目标数据及其第一校验数据;Writing n preset files to the n storage areas, where the first preset file is any one of n preset files, and the first preset file is written into the first storage area. The first preset file includes: first target data and first calibration data thereof;在对所述第一存储区域的读操作成功时,生成第二目标数据的第二校验数据,所述第二目标数据为对所述第一存储区域中的所述第一目标数据进行读操作得到的数据;And generating, when the read operation on the first storage area is successful, second check data of the second target data, where the second target data is to read the first target data in the first storage area Operational data;在所述第二校验数据与第三校验数据不同时,确定所述第一存储区域异常,其中,所述第三校验数据为对所述第一存储区域中的所述第一校验数据进行读操作得到的数据;Determining that the first storage area is abnormal when the second check data is different from the third check data, wherein the third check data is the first school in the first storage area Data obtained by reading data;在确定所述n个存储区域中的至少m个存储区域异常时,确定所述存储设备异常,1≤m≤n。When it is determined that at least m storage areas of the n storage areas are abnormal, the storage device is determined to be abnormal, 1≤m≤n.
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:The method of claim 1 further comprising:在从所述第一存储区域读取到的校验数据与所述第二校验数据相同,且采用所述第二校验数据覆盖所述第一存储区域中的所述第一校验数据失败时,确定所述第一存储区域异常。The check data read from the first storage area is the same as the second check data, and the second check data is used to cover the first check data in the first storage area When it fails, it is determined that the first storage area is abnormal.
- 根据权利要求1或2所述的方法,其特征在于,所述方法还包括:The method according to claim 1 or 2, wherein the method further comprises:在对所述第一存储区域的读操作失败时,确定所述第一存储区域异常。When the read operation on the first storage area fails, the first storage area is determined to be abnormal.
- 根据权利要求1所述的方法,其特征在于,所述第一校验数据采用预设处理方式对所述第一目标数据进行处理得到,所述第二校验数据采用所述预设处理方式对所述第二目标数据进行处理得到。The method according to claim 1, wherein the first verification data is processed by using a preset processing manner, and the second verification data is processed by the preset processing manner. The second target data is processed.
- 根据权利要求1所述的方法,其特征在于,n≥3,所述存储设备具有连续的多个存储地址,所述n个存储区域包括所述多个存储地址中的头部、中部以及尾部。The method according to claim 1, wherein n≥3, said storage device has a plurality of consecutive storage addresses, said n storage areas including a head, a middle, and a tail of said plurality of storage addresses .
- 根据权利要求1所述的方法,其特征在于,所述存储设备包括独立冗余磁盘阵列RAID,所述预置文件的大小大于或者等于所述RAID中一个条带的大小。The method according to claim 1, wherein the storage device comprises an independent redundant disk array RAID, and the size of the preset file is greater than or equal to a size of one strip in the RAID.
- 根据权利要求1所述的方法,其特征在于,所述存储设备包括除所述n个存储区域之外的其他存储区域,所述方法还包括:The method of claim 1, wherein the storage device comprises a storage area other than the n storage areas, the method further comprising:每隔预设时间段对所述第一存储区域进行所述读操作;Performing the read operation on the first storage area every preset time period;或者,在所述其他存储区域满足判断触发条件时,对所述第一存储区域进行所述读操作,所述判断触发条件包括:对所述其他存储区域的读操作失败,从所述其他存储区域中读取到的文件错误,以及对所述其他存储区域的写操作失败中的至少一种条件。Or performing the read operation on the first storage area when the other storage area satisfies the judgment trigger condition, where the determining trigger condition includes: a read operation on the other storage area fails, from the other storage At least one of a file error read in the area and a write operation failure to the other storage area.
- 根据权利要求1所述的方法,其特征在于,m=n。The method of claim 1 wherein m = n.
- 一种存储设备异常检测装置,其特征在于,应用于管理设备,所述存储设备中的部分存储区域包括n个存储区域,n≥1,所述存储设备异常检测装置包括:A device for detecting abnormality of a storage device, which is applied to a management device, wherein a part of the storage area of the storage device includes n storage areas, n≥1, and the storage device abnormality detecting device includes:写入模块,用于向所述n个存储区域中写入n个预置文件,其中,第一预置文件为n个预置文件中的任一预置文件,第一预置文件写入第一存储区域,所述第一预置文件包括:第一目标数据及其第一校验数据;a writing module, configured to write n preset files to the n storage areas, where the first preset file is any one of n preset files, and the first preset file is written a first storage area, the first preset file includes: first target data and first calibration data thereof;生成模块,用于在对所述第一存储区域的读操作成功时,生成第二目标数据的第二校验数据,所述第二目标数据为对所述第一存储区域中的所述第一目标数据进行读操作得到的数据;a generating module, configured to generate second verification data of the second target data when the read operation on the first storage area is successful, where the second target data is the first in the first storage area Data obtained by reading a target data;第一确定模块,用于在所述第二校验数据与第三校验数据不同时,确定所述第一存储区域异常,其中,所述第三校验数据为对所述第一存储区域中的所述第一校验数据进行读操作得到的数据;a first determining module, configured to determine that the first storage area is abnormal when the second check data is different from the third check data, where the third check data is for the first storage area Data obtained by the first verification data in the read operation;第二确定模块,用于在确定所述n个存储区域中的至少m个存储区域异常时,确定所述存储设备异常,1≤m≤n。And a second determining module, configured to determine that the storage device is abnormal when determining that at least m storage areas of the n storage areas are abnormal, 1≤m≤n.
- 根据权利要求9所述的存储设备异常检测装置,其特征在于,所述存储设备异常检测装置还包括:The storage device abnormality detecting device according to claim 9, wherein the storage device abnormality detecting device further comprises:第三确定模块,用于在从所述第一存储区域读取到的校验数据与所述第二校验数据相同,且采用所述第二校验数据覆盖所述第一存储区域中的所述第一校验数据失败时,确定所述第一存储区域异常。a third determining module, configured to: the check data read from the first storage area is the same as the second check data, and use the second check data to cover the first storage area When the first verification data fails, the first storage area is determined to be abnormal.
- 根据权利要求9或10所述的存储设备异常检测装置,其特征在于,所述存储设备异常检测装置还包括:The storage device abnormality detecting device according to claim 9 or 10, wherein the storage device abnormality detecting device further comprises:第四确定模块,用于在对所述第一存储区域的读操作失败时,确定所述第一存储区域异常。And a fourth determining module, configured to determine that the first storage area is abnormal when a read operation on the first storage area fails.
- 根据权利要求9所述的存储设备异常检测装置,其特征在于,所述第一校验数据采用预设处理方式对所述第一目标数据进行处理得到,所述第二校验数据采用所述预设处理方式对所述第二目标数据进行处理得到。The storage device abnormality detecting device according to claim 9, wherein the first verification data is processed by using a preset processing manner, and the second verification data is obtained by using the The preset processing manner is obtained by processing the second target data.
- 根据权利要求9所述的存储设备异常检测装置,其特征在于,n≥3,所述存储设备具有连续的多个存储地址,所述n个存储区域包括所述多个存储地址中的头部、中部以及尾部。The storage device abnormality detecting apparatus according to claim 9, wherein n≥3, said storage device has a plurality of consecutive storage addresses, and said n storage areas include a head of said plurality of storage addresses , middle and tail.
- 根据权利要求9所述的存储设备异常检测装置,其特征在于,所述存储设备包括独立冗余磁盘阵列RAID,所述预置文件的大小大于或者等于所述RAID中一个条带的大小。The storage device abnormality detecting apparatus according to claim 9, wherein the storage device comprises an independent redundant disk array RAID, and the size of the preset file is greater than or equal to a size of one strip in the RAID.
- 根据权利要求8所述的存储设备异常检测装置,其特征在于,所述存储设备包括除所述n个存储区域之外的其他存储区域,所述存储设备异常检测装置还包括:The storage device abnormality detecting device according to claim 8, wherein the storage device includes a storage area other than the n storage areas, and the storage device abnormality detecting device further includes:第一读取模块,用于每隔预设时间段对所述第一存储区域进行所述读操作;a first reading module, configured to perform the reading operation on the first storage area every preset time period;或者,or,第二读取模块,用于在所述其他存储区域满足判断触发条件时,对所述第一存储区域进行所述读操作,所述判断触发条件包括:对所述其他存储区域的 读操作失败,从所述其他存储区域中读取到的文件错误,以及对所述其他存储区域的写操作失败中的至少一种条件。a second reading module, configured to perform the read operation on the first storage area when the other storage area satisfies a judgment trigger condition, where the determining trigger condition comprises: a read operation on the other storage area fails At least one of a file error read from the other storage area and a write operation failure to the other storage area.
- 根据权利要求9所述的存储设备异常检测装置,其特征在于,m=n。A storage device abnormality detecting apparatus according to claim 9, wherein m = n.
- 一种分布式存储系统,其特征在于,所述分布式存储系统包括管理设备与多个存储设备,所述管理设备包括:权利要求9-16任一所述的存储设备异常检测装置。A distributed storage system, comprising: a management device and a plurality of storage devices, the management device comprising: the storage device abnormality detecting device according to any one of claims 9-16.
- 一种计算机设备,其特征在于,包括:A computer device, comprising:一个或多个处理器;和One or more processors; and存储器;Memory所述存储器存储有一个或多个程序,所述一个或多个程序被配置成由所述一个或多个处理器执行,以执行权利要求1-8任一所述的存储设备异常检测方法。The memory stores one or more programs, the one or more programs being configured to be executed by the one or more processors to perform the storage device anomaly detection method of any of claims 1-8.
- 一种非易失性的计算机可读存储介质,其特征在于,所述存储介质中存储有代码指令,所述代码指令由处理器执行,以执行权利要求1-8任一所述的存储设备异常检测方法。A non-transitory computer readable storage medium, wherein the storage medium stores code instructions, the code instructions being executed by a processor to perform the storage device of any of claims 1-8 Anomaly detection method.
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