27 results about "SCSI" patented technology

The invention discloses a fault diagnosis method and device for a storage system, electronic equipment and a storage medium. The method comprises the steps of obtaining message data of the storage system; based on a multi-level structure of the storage system, the message data is analyzed layer by layer, protocol information corresponding to each layer is obtained, the multi-level structure at least comprises a system interface layer, and the system interface layer is the highest layer in the multi-level structure of the storage system; determining target performance data of the system interface layer according to the protocol information corresponding to each layer and read-write operation of the system interface layer; and performing fault diagnosis on the storage system according to the target performance data to obtain a fault diagnosis result. All levels of the storage system can be subjected to data analysis, full-level fault positioning is achieved, performance data of a system interface layer, namely an SCSI layer, is analyzed emphatically, the fault condition can be analyzed accurately in combination with read-write operation, and accurate diagnosis, accurate positioning and type judgment of read-write faults of the storage system are achieved.

Methods and apparatus to manage transmissions between domains and memory are disclosed. An example electronic communications security system disclosed herein includes media storage; a first host bus adapter (HBA) serial attached small computer system interface (SCSI) (SAS) card to: communicatively couple a first domain to the media storage; and enable transmission of first data from the first domain to the media storage; and a second HBA SAS card that is write-block enabled to: communicatively couple a second domain to the media storage; enable access of the first data from the media storage by the second domain; and prevent second data from exiting the second domain.

The invention discloses a data transmission method and device, equipment and a storage medium, and relates to the field of cloud platform storage, and the method comprises the steps: abstracting a nonvolatile memory in a target data transmission system into a corresponding block device, and mounting a preset virtual disk device constructed based on a virtualization technology and a small computer system interface to a target virtual machine, and when the target virtual machine receives a data transmission request, reading target data in the block device by utilizing a virtual host service of the preset software development suite, and then transmitting the target data to the target virtual machine by utilizing an interface of the preset virtual interface device, so that the target virtual machine stores the target data into a target disk of the target virtual machine. According to the data transmission method, the virtual host service is added in the target data transmission system, and the virtual disk equipment is mounted at the virtual machine end, so that the data can be directly read from the nonvolatile memory, a redundant link during data transmission is optimized, and the storage performance of the virtual machine is effectively improved.

This invention provides a method and system for distributing I / O across SAS expanders between a controller and a disk. The method includes: an ITS module retrieving I / O requests from an I / O request queue and encapsulating them into SCSI commands; selecting a target device address; selecting the local expander channel address for odd-numbered slots and the peer expander channel address for even-numbered slots; the SAS driver transmitting the SCSI command to the local expander via the SAS bus; the local expander selecting the corresponding channel for transmission based on the SAS address encapsulated in the SCSI command; and when the local expander fails to distribute the I / O, it returns a corresponding I / O error to the ITS module, which modifies the SAS address in the SCSI command to the corresponding channel address on the peer expander and re-distributes the I / O. This invention provides a method and system for distributing I / O across SAS expanders between a controller and a disk, allowing I / O to be distributed to the storage disk via the expander belonging to the peer controller when I / O distribution between the current controller and the expander / storage disk fails.

This application discloses a fault diagnosis method, apparatus, electronic device, and storage medium for a storage system. The method involves acquiring message data from the storage system; parsing the message data layer by layer based on the multi-level structure of the storage system to obtain protocol information corresponding to each layer. The multi-level structure includes at least a system interface layer, which is the highest layer in the multi-level structure of the storage system; determining the target performance data of the system interface layer based on the protocol information corresponding to each layer and the read / write operations of the system interface layer; and performing fault diagnosis on the storage system based on the target performance data to obtain the fault diagnosis result. Data parsing can be performed on each layer of the storage system, achieving full-level fault location. The application focuses on analyzing the performance data of the system interface layer, i.e., the SCSI layer, which can accurately analyze fault conditions in conjunction with read / write operations, enabling accurate diagnosis, precise location, and type determination of read / write faults in the storage system.

The invention discloses a method and a device for realizing communication between USB (universal serial bus) equipment and an mac (media access control) platform application, and relates to the field of information security. The implementation method comprises a stripping process and a communication process, in the stripping process, the USB equipment is stripped from a kernel mode to a user mode, in the communication process, instruction communication between the USB equipment and a normal SCSI protocol applied by the mac platform is achieved through a Libusb interface library, the whole process does not need user participation, use is convenient, and user experience is friendly.

The invention provides a large-scale MIMO (Multiple Input Multiple Output) system channel atlas construction method based on a hidden space diffusion model (LDM). According to the method, the spatial consistency of a large-scale MIMO system channel is utilized, and LDM learning is used for counting conditional probability distribution of channel state information (sCSI) about the position of a user terminal, so that a channel map is constructed. An improved variational auto-encoder (VAE) is used to learn the low-dimensional representation of high-dimensional sCSI, and at the same time, an LDM is improved to improve the generation precision of the low-dimensional representation of the sCSI, so that a channel map containing the position and the low-dimensional representation data of the sCSI is constructed. The storage and transmission cost of the channel map is greatly reduced compared with the direct use of the high-dimensional sCSI, the low-dimensional representation of the sCSI in the channel map can be accurately restored to the high-dimensional sCSI by using the VAE, the generation process does not depend on pilot signals, and the pilot overhead is greatly saved while the sCSI is accurately generated.

The present application discloses a method for implementing a distributed block storage multi-path ISCSI lock, the method comprising: performing an initialization operation on the current ISCSI server based on a received ISCSI connection request; performing a lock operation through the ISCSI client, updating the lock information in the memory, and synchronously saving the lock information to the distributed storage cluster; sending the updated lock information and file data to the remaining ISCSI servers in the storage cluster, which then perform data synchronization operations. This method not only synchronizes SCSI lock information between multiple nodes, but also achieves data persistence. Furthermore, it also monitors abnormal status. When a server fails, the normal server no longer synchronizes messages to the failed node, thereby improving the system's usability and reliability. The present application also discloses a system, device, and computer-readable storage medium for implementing a distributed block storage multi-path ISCSI lock, which have the above beneficial effects.

The application proposes a large-scale MIMO system channel graph construction method based on a latent space diffusion model (LDM). The method uses the spatial consistency of the large-scale MIMO system channel to learn the conditional probability distribution of the statistical channel state information (sCSI) about the user terminal position to construct the channel graph. An improved variational autoencoder (VAE) is used to learn the low-dimensional representation of high-dimensional sCSI, and the LDM is improved to improve the generation accuracy of the low-dimensional representation of sCSI, and then a channel graph containing position and sCSI low-dimensional representation data is constructed. The storage and transmission cost of the channel graph is greatly reduced compared with directly using high-dimensional sCSI, and the sCSI low-dimensional representation in the channel graph can be accurately restored to high-dimensional sCSI using VAE, and the generation process does not depend on the pilot signal, which greatly saves the pilot overhead while accurately generating sCSI.

The present application discloses a serial connection small computer system interface expander and a data forwarding method, relating to the field of computer technology. The expander includes: N serial connection small computer system interfaces, which are used to connect at least one storage device and at least one hard disk expansion cabinet managed by the storage device, where N is a positive integer greater than 1; a processor, which is used to run a program to execute: data forwarding between the storage device and the hard disk expansion cabinet managed by the storage device, and / or data forwarding between different hard disk expansion cabinets managed by the storage device; a memory, which is used to store relevant information about the program and the interface; and a debugging serial port, which is used to configure the N interfaces. The serial connection small computer system interface expander is used to increase the number of hard disk expansion cabinets connected to the storage device as much as possible to expand the storage capacity, while improving the tolerance of the connection between the storage device and the hard disk expansion cabinet to serial connection small computer system interface line failures.

The invention discloses an access method and device, computer equipment and a storage medium, and the method comprises the steps: transmitting an SCSI instruction to a communication module through a large-capacity storage port between the communication module and the communication module; the SCSI instruction is used for indicating to enable the ADB tool; in response to the fact that the ADB tool is enabled, sending a first login instruction to the communication module; the first login instruction comprises a first login password, and the first login instruction is used for requesting to log in the ADB tool based on the first login password; in response to a received first login response from the communication module, sending a first ADB instruction to the communication module; the first ADB instruction is used for requesting to access a communication module; receiving a first ADB response from the communication module; the first ADB response is used for indicating that the first ADB instruction belongs to the ADB instruction white list, and the first ADB instruction is executed. According to the method and the device, the security of the communication module can be improved in the process of accessing the communication module.

A storage device connected to a server includes a network switch, an extender electrically connected to the network switch, and a baseboard management controller electrically connected to the network switch and the extender. The extender generates and transmits rack data supporting the Small Computer System Interface (MSI) Rack Service Format to the baseboard management controller via an internal network through the network switch. After receiving the rack data from the extender via the network switch and the internal network, the baseboard management controller translates the rack data into rack translated data supporting the Redfish format and transmits the rack translated data to the server via an external network through the network switch. This allows users to remotely manage the storage device using out-of-band management.

A system and method for performing standards-compliant data sanitization of Small Computer System Interface (SCSI), Advanced Technology Attachment (ATA), and Non-Volatile Memory Express (NVMe) hard disk drives (HDDs), solid state drives (SSDs), Non-Volatile Memory Express (NVMe) drives, and other portable storage media, e.g. flash storage, USB thumb drives at an optimized speed. The sanitization and overwrite processes herein disclosed are executed by completely web-based applications that use the local hard drive (host) as a server intermediate the web browser and the program files.

The application provides a method and device for querying hard disk VPD information in a BIOS stage, and belongs to the technical field of hard disk parameter acquisition. The method provided by the application comprises the following steps: in the BIOS stage, a plurality of enumerated hard disks are acquired; a target hard disk to be queried is screened from the enumerated hard disks based on the device connection mode of the enumerated hard disks, and the target hard disk to be queried is connected to a mainboard through a RAID card; a VPD information query instruction is sent by the BIOS end based on a SCSI protocol, and the RAID card forwards the query instruction to the target hard disk to be queried; the target hard disk to be queried returns hard disk information corresponding to the query instruction to the RAID card based on the SCSI protocol, and the hard disk information is sent to the BIOS end through the RAID card; and the received hard disk information is completely consistent with the hard disk information stored locally by the target hard disk to be queried. The method and device for querying hard disk VPD information in the BIOS stage provided by the application are used for realizing complete acquisition of hard disk information under the RAID card of the BIOS end.

The invention discloses an embedded storage chip mass production device and method based on SCSI and eMMC protocol conversion. The embedded storage chip mass production device comprises an SCSI-eMMC private command mapping module, a non-standard CMD10 state query module and a command verification module. The USB communication protocol layer of the SCSI-eMMC private command mapping module uses an SCSI standard, the CMD10 command response content of the non-standard CMD10 state query module is private defined mass production progress data, and the command verification module is used for realizing verification head generation, anti-code verification and hardware response mechanism. According to the method, the efficiency is optimized, the CMD10 is directly responded by hardware, frequent intervention of an operating system is not needed, and the interrupt processing time is shortened; the compatibility is good; an eMMC private command is packaged through an SCSI command to adapt to common card reader hardware; and the anti-code verification of the verification mechanism ensures that the command transmission is errorless.

The application provides a flow distribution method and device, equipment and a storage medium. The method comprises the following steps: every preset time length, a plurality of central processing units (CPUs) currently specified by a storage performance development kit (SPDK) iSCSI service are acquired. When a new flow connection appears, according to the current load coefficient of each CPU, the flow connection is distributed to the CPU with the minimum current load coefficient. When no new flow connection appears, according to the current load coefficient of each CPU, the flow connection connected to the CPU corresponding to the maximum load coefficient is migrated to the CPU corresponding to the minimum load coefficient. The application improves the balance of flow distribution on the CPU.

The application provides a method for realizing shared volumes based on an FC protocol, a host computer and an underlying storage device are connected through the FC protocol, a cloud host disk driver uses virtio-scsi, an SCSI locking mechanism is used, and the cloud host computer that is mounted with the shared volume needs to have forced non-affinity and be distributed on different host computers.The application has the beneficial effects that the method for realizing shared volumes based on the FC protocol is used to realize shared volume mounting; the cloud host computer no longer depends on an ISCSI protocol, and a special network card and a network segment need not be configured; the cloud host computer is mounted with the shared volume through the host computer, and is no longer directly connected with the underlying shared storage device, direct exposure is avoided, and the method is safer.

The application discloses a kind of cloud platform accelerates the method, device, system and computer readable storage medium of virtual machine I / O, including pre-creation shared large page memory's virtual machine, and obtain the protocol and connection information of target volume;With the SPDK vhost-user service on the host corresponding to virtual machine sends the request of creating controller, to create vhost-user-scsi controller;According to the protocol and connection information of target volume makes SPDK bdve take over target volume, and SPDK bdve is added to vhost-user-scsi controller;Virtual machine is associated with vhost-user-scsi controller, so that the QUME in virtual machine is accelerated by calling vhost-user-scsi controller to target volume and operates;The application is conducive to improving acceleration efficiency and system performance.

Disclosed is a small computer-system interface (SCSI) device (102) including an initialization unit (110) and a control unit (112), implemented on at least one of, a Field Programmable Gate Array (FPGA) and Application Specific Integrated Circuits (ASICs). The query unit (110) sends a first signal to a slave controller (104), receives, from the Slave controller (104), first information of a peripheral device (106), in response to the first signal, receives second information from the master controller (108). The control unit (112) generates a plurality of command descriptor blocks (CDBs) based on the first information and the second information, and sends the plurality of CDBs to the slave controller (104) for a transfer of data between the master controller (108) and the peripheral device (106), receives the data from the slave controller (104) and send the data to the master controller (108).

The invention provides a method and device for querying hard disk VPD information in a BIOS stage, and belongs to the technical field of hard disk parameter acquisition. The method provided by the invention comprises the following steps: in a BIOS stage, obtaining a plurality of enumeration hard disks; screening a target to-be-queried hard disk from the enumerated hard disks based on the equipment connection mode of the enumerated hard disks, wherein the target to-be-queried hard disk is connected with the mainboard through the RAID card; the BIOS end sends a VPD information query instruction based on an SCSI protocol, and the RAID card forwards the query instruction to a target to-be-queried hard disk; the target to-be-queried hard disk returns hard disk information corresponding to the query instruction to the RAID card based on the SCSI protocol, the hard disk information is sent to the BIOS end through the RAID card, and the received hard disk information is completely consistent with hard disk information locally stored in the target to-be-queried hard disk. The method and the device for querying the hard disk VPD information in the BIOS stage are used for realizing complete acquisition of the hard disk information under the Raid card at the BIOS end.

The application discloses an implementation method and device for communication between a USB device and a mac platform application, and relates to the field of information security. The implementation method comprises a stripping process and a communication process. In the stripping process, the USB device is stripped from a kernel state to a user state. In the communication process, the Libusb interface library is used to realize instruction communication of a normal SCSI protocol between the USB device and the mac platform application. The whole process does not require user participation, and is convenient to use and friendly to user experience.

The present application discloses a control method, device and medium for a storage device, mainly related to the field of fiber optic transmission. The method receives a first REST request input by a user; converts the first REST request into a SCSI instruction, and sends the SCSI instruction to the storage device through an FC link; receives a second REST request input by the user, and determines whether the second REST request is a GET request; if so, receives CLI data fed back by the storage device; if not, receives an operation result fed back by the storage device. It can be seen that this method converts the first REST request input by the user into a SCSI instruction, and sends the SCSI instruction to the storage device through an FC link to directly manage the storage device under the fiber optic network topology, without the need to additionally build a separate Ethernet management network, simplifies the networking topology, and reduces the network maintenance cost.

The invention discloses a link switching method and device, a storage medium and a program product. The method comprises the steps that the link state of each logic link in an Ethernet storage network is collected, the Ethernet storage network comprises a storage network for data transmission through the Ethernet, and the link state of each logic link is used for representing the connectivity of the logic link; collecting port states of all physical ports of each logical link to obtain the port state of each logical link; based on the link state of each logic link and the port state of the logic link, determining whether each logic link needs to be subjected to link switching; and carrying out link switching on the logic link which needs to be subjected to link switching by adopting multi-path software. Through the link switching method and the link switching device, the problem that the link switching efficiency is low after a single logic link fails due to the fact that an Ethernet storage network IP-SAN depends on a default timeout mechanism of an SCSI protocol in the prior art is solved.

A system and method for performing standards-compliant data sanitization of Small Computer System Interface (SCSI), Advanced Technology Attachment (ATA), and Non-Volatile Memory Express (NVMe) hard disk drives (HDDs), solid state drives (SSDs), Non-Volatile Memory Express (NVMe) drives, and other portable storage media, e.g. flash storage, USB thumb drives at an optimized speed and for protecting an audit trail created while performing standards-compliant data sanitization of information and data storage devices. The sanitization and overwrite processes herein disclosed are executed by completely web-based applications that use the local hard drive (host) as a server intermediate the web browser and the program files.

The present invention discloses an embedded storage chip mass production device and method based on SCSI and eMMC protocol conversion, comprising: a SCSI-eMMC private command mapping module, a non-standard CMD10 status query module, and a command verification module. The USB communication protocol layer of the SCSI-eMMC private command mapping module uses the SCSI standard, the CMD10 command response content of the non-standard CMD10 status query module contains privately defined mass production progress data, and the command verification module is used to implement a checksum header generation, reverse code verification, and hardware response mechanism. The present invention optimizes efficiency: CMD10 is responded to directly by hardware, eliminating the need for frequent operating system intervention and reducing interrupt processing time; provides excellent compatibility: eMMC private commands are encapsulated through SCSI commands, adapting to common card reader hardware; and provides high reliability: the reverse code verification of the verification mechanism ensures correct command transmission.

The present application discloses a volume processing method, apparatus, device, and storage medium, relating to the field of computer technology, and is used to address the shortcomings of slow process processing and easy jamming. The method comprises: after an iSCSI client logs in, sending a preset request command for logical unit number information to a target device, and obtaining the logical unit number information returned by the target device; creating a SCSI logical unit based on the logical unit number information and volume mapping information pre-stored locally in the form of a linked list; connecting the SCSI logical unit to a distributed storage cluster, and establishing a corresponding management structure so that when the current volume processing command is received, the management structure is directly used to perform corresponding processing operations. The present application establishes a corresponding management structure after connecting the SCSI logical unit to the distributed storage cluster, which can improve the usability of the system and reduce the overhead of system resources.

The invention discloses a general disk command issuing method, and belongs to the technical field of solid state disks. The method comprises the following steps: firstly, analyzing a user instruction into ATA command operation by adopting a semantic interface; carrying out intelligent risk interception through a dual risk assessment mechanism; then, the command is packaged and issued by using an SCSI-ATA transparent transmission technology; real-time progress monitoring is realized by adopting a dual-cycle architecture of active polling and event monitoring; and finally, the original response is converted into a readable suggestion through the error code mapping library. And two execution modes of foreground synchronization and background asynchronization are supported, and multiple command types such as equipment diagnosis, performance test and secure erasure are covered. According to the method, the operation threshold is greatly reduced, and a complex hexadecimal command is replaced by semantic parameters; misoperation is effectively prevented through intelligent risk interception, and system safety is guaranteed; automation, security and visualization of disk command issuing are achieved, and the efficiency and reliability of storage device operation and maintenance are remarkably improved.