CN107391049B - Storage connection device and storage system - Google Patents
Storage connection device and storage system Download PDFInfo
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- CN107391049B CN107391049B CN201710807727.4A CN201710807727A CN107391049B CN 107391049 B CN107391049 B CN 107391049B CN 201710807727 A CN201710807727 A CN 201710807727A CN 107391049 B CN107391049 B CN 107391049B
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
- G06F11/0727—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment in a storage system, e.g. in a DASD or network based storage system
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
- G06F11/0793—Remedial or corrective actions
-
- 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
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
-
- 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
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0659—Command handling arrangements, e.g. command buffers, queues, command scheduling
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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
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0674—Disk device
- G06F3/0676—Magnetic disk device
-
- 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
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Quality & Reliability (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
- Debugging And Monitoring (AREA)
Abstract
The invention discloses a storage connection device and a storage system, wherein the storage connection device comprises: the first interface is used for connecting an upper computer; a second interface for connecting an external storage device; the processing device is connected with the first interface and the second interface, and is used for shielding a standard operating system command sent by the upper computer, converting the non-standard operating system command into a standard operating system command after receiving the non-standard operating system command sent by the upper computer, and sending the converted standard operating system command to the external storage device. The storage connection device provided by the invention can reduce the problem of operation blocking of the upper computer caused by a damaged area in the external storage device, and can also realize the access of the upper computer to the external storage device.
Description
Technical Field
The invention relates to the technical field of storage, in particular to storage connection equipment and a storage system.
Background
For the current USB storage device, if the storage medium is damaged, both the magnetic medium and the flash memory medium may affect the normal access of the operating system, for example, after the USB storage device is accessed to the host computer (such as a personal PC), the operating system of the host computer may automatically read the sectors such as the MBR and the DBR through the standard operating system command, and if these areas are damaged, the problem of the host computer running is usually caused.
Disclosure of Invention
The invention aims to provide a storage connection device and a storage system, which can reduce the occurrence of the problem of operation blocking of an upper computer caused by a damaged area in external storage equipment.
In order to achieve the above object, the present invention provides a storage connection device, including:
the first interface is used for connecting an upper computer;
a second interface for connecting an external storage device;
the processing device is connected with the first interface and the second interface, and is used for shielding a standard operating system command sent by the upper computer, converting the non-standard operating system command into a standard operating system command after receiving the non-standard operating system command sent by the upper computer, and sending the converted standard operating system command to the external storage device.
Preferably, the standard operating system commands are standard SCSI commands, and the non-standard operating system commands are commands formulated in accordance with a non-standard framework of SCSI protocol.
Preferably, the processing device comprises a memory and a processor connected with the memory;
the memory is used for storing the corresponding relation between the non-standard operating system command and the standard operating system command;
the processor is configured to detect a command received by the first interface, if it is detected that the command received by the first interface is a standard operating system command, send invalid information to the upper computer through the first interface, so that the upper computer gives up accessing to the external storage device with the standard operating system command, and if it is detected that the command received by the first interface is the non-standard operating system command, obtain a standard operating system command corresponding to the non-standard operating system command from the memory, and send the corresponding standard operating system command to the external storage device through the second interface.
Preferably, the storage connection device further comprises a power supply device connected to the processing device, the power supply device being configured to supply power to the external storage device under the control of the processing device.
Preferably, the first interface and the second interface are both USB interfaces.
In order to achieve the above object, the present invention further provides a storage system, which includes the storage connection device, the upper computer, and the external storage device.
Preferably, after the upper computer reads the damaged area of the external storage device through the storage connection device, the upper computer performs at least one operation of a reset operation, an access address jump operation and a forward and reverse read conversion operation on the external storage device through the storage connection device.
Preferably, the reset operation includes at least one of: soft reset, hard reset, power reset.
Preferably, the external storage device includes at least one of: flash memory storage device and magnetic disk storage device.
Preferably, the upper computer adopts a Windows operating system or a linux operating system or a UNIX-like operating system.
The storage connection equipment provided by the invention can avoid the direct access of the upper computer to the external storage equipment by adopting the standard operating system command, thereby reducing the problem of the operation blocking of the upper computer caused by the damaged area in the external storage equipment.
Drawings
FIG. 1 is a schematic diagram of a storage connection device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a storage system according to an embodiment of the present invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a storage connection device according to an embodiment of the present invention, where the storage connection device includes:
a first interface 11 for connecting with an upper computer;
a second interface 12 for connecting to an external storage device;
the processing device 13 is connected to the first interface 11 and the second interface 12, where the processing device 13 is configured to mask a standard operating system command sent by the upper computer, convert a non-standard operating system command sent by the upper computer into a standard operating system command after receiving the non-standard operating system command, and send the converted standard operating system command to the external storage device.
The storage connection device provided by the embodiment of the invention can avoid the direct access of the upper computer to the external storage device by adopting the standard operating system command, thereby reducing the problem of the operation blocking of the upper computer caused by the damaged area in the external storage device.
In this embodiment of the present invention, the standard operating system command may be a standard SCSI (Small Computer System Interface ) command, and the non-standard operating system command is a command formulated according to a non-standard framework of the SCSI protocol (i.e., a non-standard SCSI command).
For example, in an embodiment of the present invention, the processing device includes a memory and a processor coupled to the memory;
the memory is configured to store a correspondence between a non-standard operating system command and a standard operating system command, for example, a corresponding non-standard SCSI command may be set for each standard SCSI command in advance according to a non-standard framework of a SCSI protocol, and the SCSI command, the non-standard SCSI command, and the correspondence between the two are stored in the memory;
the processor is configured to detect a command received by the first interface, if it is detected that the command received by the first interface is a standard operating system command, send invalid information to the upper computer through the first interface, so that the upper computer gives up accessing to the external storage device with the standard operating system command, and if it is detected that the command received by the first interface is the non-standard operating system command, obtain a standard operating system command corresponding to the non-standard operating system command from the memory, and send the corresponding standard operating system command to the external storage device through the second interface.
Preferably, in the present invention, the storage connection device further includes a power supply unit connected to the processing unit, the power supply unit being configured to supply power to the external storage device under the control of the processing unit; for example, the power supply device may supply power to the external storage device by using a dc power supply manner.
In this embodiment of the present invention, the first interface and the second interface may be USB interfaces (such as USB 3.0 interfaces). For example, the first interface is a USB male port, and the second interface is a USB female port.
The embodiment of the invention also provides a storage system which comprises the storage connection device, the upper computer and the external storage device.
After the host computer reads the damaged area of the external storage device through the storage connection device, the host computer performs at least one of a reset operation, an access address jump operation, and a forward/reverse read conversion operation on the external storage device through the storage connection device, for example, the reset operation may include at least one of the following operations: soft reset, hard reset, power reset.
In the present invention, the external storage device may be a flash memory storage device or a magnetic disk storage device, for example, may be a USB disk, a mobile hard disk, or other USB storage devices.
In the present invention, the host computer may be a Windows operating system or a linux operating system or a UNIX-like operating system, for example, the host computer may be a MACOS, freeBSD, or any other UNIX-like operating system supporting SCSI standards, or may be an embedded operating system, such as iOS, embedded linux, or the like.
Referring to fig. 2, fig. 2 is a schematic diagram of a storage system according to an embodiment of the present invention, where the storage system includes an upper computer 1, a storage connection device 2, and an external storage device 3;
wherein, the upper computer 1 can be connected with other external devices through a USB interface thereon;
the storage connection device 2 includes a processing means 23, a first interface 21 for connecting to an upper computer, a second interface 22 for connecting to an external storage device, and a power supply means 24, where the processing means 23 is configured to mask, from the external storage device, a standard operating system command (standard SCSI command) sent by the upper computer 1, and after receiving a non-standard operating system command (non-standard SCSI command) sent by the upper computer 1, convert the non-standard operating system command into a standard operating system command recognizable by the external storage device 3, and send the converted standard operating system command to the external storage device 3;
the first interface 21 is a USB male port, the second interface 22 is a USB female port, the processing device includes a processor and a memory, and the memory stores a correspondence between a non-standard operating system command (non-standard SCSI command) sent by the host computer and a standard operating system command (standard SCSI command) identifiable by the external storage device;
for the above storage system, if the upper computer is directly connected with the external storage device through its USB interface, the operating system of the upper computer automatically sends a standard operating system command (such as a standard SCSI command) to the external storage device, so as to implement access to the external storage device, and because the operating system of the upper computer generally uses a SCSI command with uniform timeout time to access the external storage device (such as the USB storage device), after encountering a storage medium damaged area, the upper computer will be blocked for a long time (the upper computer cannot receive the corresponding return information of the external storage device), which causes problems such as blocking of the relevant operating interface of the upper computer and halt of the storage device;
when the upper computer 1 is connected with the external storage device 3 through the storage connection device 2, if the processor of the processing apparatus 23 detects that the command sent by the upper computer is a standard operating system command, invalid information is sent to the upper computer 1 through the first interface 21, so that the operating system of the upper computer judges that the external storage device is a device which cannot be accessed, and further, the operating system of the upper computer gives up accessing to the external storage device through the standard operating system command, if the processor of the processing apparatus 23 detects that the command sent by the upper computer is a preset non-standard operating system command, the non-standard operating system command is translated (converted) into a standard operating system command identifiable by the external storage device 3 through information in a memory of the processing apparatus 23, and the converted standard operating system command is sent to the external storage device 3 through the second interface 22, and the external storage device 3 performs related operations according to the standard operating system command received from the storage connection device 2, so that the upper computer 1 reads data in the external storage device 3 through the storage connection device 2 or writes data into the external storage device 3 (the upper computer is identified to the storage connection device, but the external storage device cannot be directly accessed by the external storage device);
in order to realize the functions, corresponding firmware can be arranged in a memory of the processing device, and the control function of the processor can be realized through the firmware, including the functions of shielding standard operating system commands, equipment enumeration, access operating system, power supply control and the like sent by the upper computer;
the method comprises the steps that a non-standard operating system command sent by an upper computer is converted into a standard operating system command identifiable by an external storage device through a storage connection device 2, data stored by the external storage device can be sent to the upper computer through the storage connection device, so that sector data in the external storage device can be read, further bad track scanning of the external storage device by the upper computer can be realized, file system analysis and full-disk mirroring can be realized, in addition, the upper computer can intelligently identify medium damaged areas of the external storage device and adopt corresponding processing modes to reduce time consumption for accessing the areas, for example, the method of carrying out soft reset, hard reset or power reset on the external storage device, access address jump, forward and reverse reading conversion and the like can be included, and comprehensive use of the method can be realized, for example, when the medium damaged areas of the external storage device are read, the upper computer 1 can automatically send a power reset command to a processing device of the storage connection device 2, and the processing device of the storage connection device 2 can realize power reset of the external storage device through controlling a power supply device 24 after receiving the power reset command;
for example, in the present invention, the functions of sending a command of a non-standard operating system, scanning a bad track, analyzing a file system, and mirroring an entire disk can be realized by installing an application program in an upper computer.
The storage system provided by the embodiment of the invention not only solves the problem that the time is uncontrollable when the USB storage device medium damage area is accessed through the operating system standard file system, but also solves the problems that the device cannot be accessed, crashes and the upper computer runs and is blocked due to the fact that the operating system automatically accesses the USB storage device.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (9)
1. A storage connection device, comprising:
the first interface is used for connecting an upper computer;
a second interface for connecting an external storage device;
the processing device is connected with the first interface and the second interface, and is used for shielding a standard operating system command sent by the upper computer, converting the non-standard operating system command into a standard operating system command after receiving the non-standard operating system command sent by the upper computer, and sending the converted standard operating system command to the external storage device;
the processing device comprises a memory and a processor connected with the memory;
the memory is used for storing the corresponding relation between the non-standard operating system command and the standard operating system command;
the processor is configured to detect a command received by the first interface, if it is detected that the command received by the first interface is a standard operating system command, send invalid information to the upper computer through the first interface, so that the upper computer gives up accessing to the external storage device with the standard operating system command, and if it is detected that the command received by the first interface is the non-standard operating system command, obtain a standard operating system command corresponding to the non-standard operating system command from the memory, and send the corresponding standard operating system command to the external storage device through the second interface.
2. The storage connection device of claim 1, wherein the standard operating system commands are standard SCSI commands and the non-standard operating system commands are commands formulated in accordance with a non-standard framework of SCSI protocol.
3. The storage connection device of claim 1, further comprising a power supply means connected to the processing means for powering the external storage device under control of the processing means.
4. The storage connection device of claim 1, wherein the first interface and the second interface are both USB interfaces.
5. A storage system comprising the storage connection device of any one of claims 1-4, the host computer, and the external storage device.
6. The memory system according to claim 5, wherein after the host computer reads the damaged area of the external memory device through the memory connection device, the host computer performs at least one of a reset operation, an access address jump operation, and a forward/reverse read conversion operation on the external memory device through the memory connection device.
7. The memory system of claim 6, wherein the reset operation comprises at least one of: soft reset, hard reset, power reset.
8. The storage system of claim 5, wherein the external storage device comprises at least one of: flash memory storage device and magnetic disk storage device.
9. The memory system according to claim 5, wherein the host computer is a Windows operating system or a linux operating system or a UNIX-like operating system.
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