20 results about "ISCSI" patented technology

The technology disclosed herein enables worker nodes to reestablish connections when the connection protocols fail to successfully reconnect on their own. In a particular example, a method includes establishing a plurality of TCP-based connections (e.g., iSCSI and / or NVMe) between a plurality of worker nodes and a storage system and determining status of the plurality of TCP-based connections. When the status indicates a first connection of the plurality of TCP-based connections has failed, the method includes determining credentials used to establish the first connection are invalid. In response to determining the credentials are invalid, the method includes requesting new credentials from a controller node and reestablishing the first connection using the new credentials.

The invention discloses a method for backing up different stored virtual machine data, which belongs to the technical field of data backup, and comprises the following steps of: deploying iSCSI (Internet Small Computer System Interface) service; configuring domain name mapping; the backup agent obtains parameters of the virtual machine needing to be backed up and creates a snapshot for a disk; mapping the created snapshot to a backup agent through the iSCSI, and writing effective data in the snapshot into a backup server; according to the method for backing up different stored virtual machine data, data protection of the Huawei cloud virtual machine can be achieved only through simple configuration on storage, a snapshot disk does not need to be created for a disk snapshot, the pressure of the storage space is relieved, the overall backup efficiency is improved, and the operation and maintenance cost is reduced.

Techniques for host devices to offload iSCSI and NVMe / TCP data plane processing for data plane traffic to a NIC, and for the NIC to perform the data plane traffic processing in hardware. Traditionally, network protocol stacks have been implemented within the kernel of an operating system of a computing device. In light of this, iSCSI and NVMe / TCP user space applications running on host devices interact with a kernel of an operating system using system calls in order to send network traffic. However, the system calls, TCP / IP processing, and data copying required when communicating via the kernel increases CPU utilization as well as I / O latency. Techniques described herein include configuring the host device to enable kernel bypass for data path traffic for iSCSI and NVMe / TCP user space applications, and a NIC may include hardware configured to perform the iSCSI and NVMe / TCP processing for iSCSI and NVMe / TCP connections.

The application relates to an iSCSI service abnormal IO processing method, system and device and a storage medium. An iSCSI client sends an abandonment instruction to a storage side iSCSI service according to any IO request timeout, wherein the abandonment instruction contains a mark of the IO request, the storage side iSCSI service records the mark and sends the abandonment instruction to a Ceph service, the Ceph service uses the mark to locate a Ceph service IO corresponding to the IO request, and makes the Ceph service IO out of a Ceph cache queue; when the Ceph service IO carries the mark and returns to the storage side iSCSI service to return the iSCSI client through the storage side iSCSI service, the storage side iSCSI service matches the mark bound by the Ceph service IO with all the recorded marks, if the marks are matched, the return result of the Ceph service IO is released, and the return result is not returned to the iSCSI client, so that IO abnormality is avoided to cause the Ceph service and the iSCSI service to be deadlocked, and the iSCSI service and the Ceph service of a storage system can normally work when IO abnormality occurs.

The application provides an implementation method, device and equipment of an iSCSI service supporting IP dual stacks. The method comprises the following steps of: deploying a configuration file of IP dual stacks on a storage node of a server and starting an iSCSI service; loading a network segment of the configuration file and matching the network segment with a local network card to obtain a matched service IP list and write the service IP list into an iSCSI map for maintenance; in response to receiving a mount volume command issued by a client, obtaining an IP stack type carried by the mount volume command and matching the IP stack type with the service IP list of the iSCSI map, and returning a matched service IP to the client, so that the client accesses the iSCSI service through the returned service IP. The scheme disclosed by the application improves the stability and convenience of the iSCSI service.

The application provides a migration method and system between a virtual machine and a bare metal server and a readable medium. The migration method comprises the following steps: a DPU agent registers node information of the bare metal server to a node driver; the node driver acquires iSCSI target information corresponding to a storage device used by a source node in response to a migration request indicating that the source node is to be migrated to a target node; the node driver performs a shutdown operation on the source node and releases occupation of the storage device by the source node; the DPU agent or the node driver establishes a connection between the storage device and the target node based on the iSCSI target information according to node attributes of the target node; and the node driver performs a startup operation on the target node so that the target node is started up from the storage device, and the migration is completed. Through the application, the problems of complex operation, poor compatibility, high cost and difficulty in automation of existing migration schemes can be solved.

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.

Techniques for host devices to offload iSCSI and NVMe / TCP data plane processing for data plane traffic to a NIC, and for the NIC to perform the data plane traffic processing in hardware. Traditionally, network protocol stacks have been implemented within the kernel of an operating system of a computing device. In light of this, iSCSI and NVMe / TCP user space applications running on host devices interact with a kernel of an operating system using system calls in order to send network traffic. However, the system calls, TCP / IP processing, and data copying required when communicating via the kernel increases CPU utilization as well as I / O latency. Techniques described herein include configuring the host device to enable kernel bypass for data path traffic for iSCSI and NVMe / TCP user space applications, and a NIC may include hardware configured to perform the iSCSI and NVMe / TCP processing for iSCSI and NVMe / TCP connections.

The present application discloses a method, system, electronic device and computer-readable storage medium for establishing a connection, and relates to the field of storage services. The method for establishing a connection includes: determining a system connected to itself, where the system is a storage system or a server system; obtaining connection information corresponding to the system, and sending the connection information to a target connection device, where the target connection device is a connection device paired with itself; when the system is a storage system, sending the connection information sent by the target connection device to the storage system, so as to create a host on the storage system based on the connection information sent by the target connection device; when the system is a server system, establishing an iSCSI connection with the storage system based on the connection information sent by the target connection device. The present application eliminates the need to manually input connection information related to the server system on the storage system, and eliminates the need to manually trigger an iSCSI connection with the storage system on the host side, thereby improving the efficiency of iSCSI storage service deployment.

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 method, device and readable storage medium for processing threads, and relates to the field of information technology. The method for processing threads comprises the following steps: receiving TGT service starting information, initializing a storage thread pool, receiving a TCP connection, forwarding a file descriptor of the TCP to a main thread, setting the main thread to a running state, and assigning a slave thread to a corresponding target object to run an iSCSI protocol instruction. Since all the file descriptors are run by the main thread, only the instruction needs to be issued when issuing, and the switching of the file descriptor is not needed. Compared with the previous switching mode of the file descriptor, the TCP file descriptor is processed in a thread, the read-write problem caused by the calling of the TCP file descriptor in multiple threads can be prevented, the life cycle of the file descriptor is ensured, and the life cycle of the instruction in all threads is also ensured.

An ISCSI (Internet Small Computer System Interface)-based Hyper-V virtual machine instantaneous recovery method relates to the technical field of computers, and comprises the following steps: preparing backup data, storing the backup data in the form of mirror image files, and enabling each mirror image file to correspond to a backup point; deploying an ISCSI (Internet Small Computer System Interface) service; selecting a restoration point corresponding to the backup point, and creating a differential mirror image file based on the selected restoration point; the differential mirror image file is published as an ISCSI target through an ISCSI service; the ISCSI target is connected to and mounted on a target Hyper-V host computer; creating an empty virtual machine and adding a virtual disk file in the ISCSI target; starting the virtual machine after creating a virtual machine snapshot; the method is used for solving the problems of low recovery speed, dependence on a domain environment and difficulty in effectively protecting original backup data from being changed when instant recovery is pursued due to traditional large-capacity data transmission.

The invention relates to the technical field of internet resource collaboration, and provides an iSCSI cache synchronization method based on configuration version control, which comprises the following steps: S1, constructing an iSCSI service deployment architecture comprising a global control node and a storage access node; s2, a Config-Version is generated through a global control node, and a configuration updating event and the corresponding Config-Version are issued to a storage access node by means of an asynchronous message notification mechanism; s3, the storage access node executes version reconciliation operation based on the configuration update event and Config-Version by relying on a version control mechanism, judges whether the local cache is consistent with the central configuration of the global control node or not, and triggers configuration pulling to update the local cache if the local cache is not consistent with the central configuration of the global control node; and S4, when the storage access node is started, new configuration is accessed or cache missing / expiration is detected, a cache preheating mechanism is started, corresponding iSCSI configuration information is pre-loaded to a local cache, and iSCSI cache synchronization is completed. And systematic improvement and optimization are carried out from the aspects of system architecture, configuration version control, a message synchronization mechanism and the like.

The embodiment of the invention provides a CSI (Channel State Information) driver exception recovery method and device, electronic equipment and a storage medium, and relates to the technical field of storage, and the method comprises the following steps: detecting a connection state between a persistent volume on a computing node and a first iSCSI target on a remote iSCSI storage device through a CSI driver, and if the connection state is detected to be exceptional, sending the persistent volume to the remote iSCSI storage device; if the first iSCSI target is migrated, the current state information of the first iSCSI target is inquired through the CSI driver, if the current state information represents that the first iSCSI target is migrated, connection information corresponding to a migrated second iSCSI target is obtained through the CSI driver, then the computing node is controlled to disconnect a first connection session with the first iSCSI target, and the second iSCSI target is migrated according to the connection information. And establishing a second connection session between the computing node and the second iSCSI target, and finally updating the connection information corresponding to the persistent volume through the CSI driver, thereby realizing automatic sensing of iSCSI target migration and realizing non-sensing connection recovery.

The present invention provides a storage capacity virtualization simulation test method and system. This method uses virtualization technology to expand the hard disk capacity of a storage device by hundreds of times. The iSCSI-target service then transforms the storage device into an iSCSI network storage device. The storage system under test can map the iSCSI network storage device to the local storage via an iSCSI-initiator, thereby simulating a petabyte-level (or even exabyte-level or higher) storage test virtualization simulation environment. This solves the problem of difficulty in constructing a massive storage system test environment due to the limited capacity of the storage system under test. The present invention uses container technology to encapsulate the iSCSI-target into an iSCSI server-side container. While effectively providing a petabyte-level (or even exabyte-level or higher) iSCSI network storage device for massive storage testing, it also reduces the steps required to restore the storage device, simplifying the process of setting up a massive storage test environment, reducing labor investment, and lowering testing costs.

The application discloses a method for starting a Linux operating system under a VOI architecture, and is applied to a terminal and comprises the following steps: S1, after starting, selecting a UEFI starting mode, downloading and starting a booting file by using iPXE, and writing starting configuration information into a disk; S2, acquiring an operating system image file list of a server by using iPXE, selecting a system image from the operating system image file list, acquiring and analyzing an iSCSI disk path corresponding to the system image, and then starting the system; S3, loading a UEFI starter and a Linux kernel program, initializing the system, and completing starting of the Linux operating system under the VOI architecture. The method overcomes the problem that some terminal devices cannot be started in a Legacy (traditional BIOS) mode due to hardware reasons, and is especially suitable for a Galaxy Kirin system.

The application provides a data read-write method and device, electronic equipment and a storage medium, and relates to the technical field of data processing. The method comprises the following steps: monitoring a data processing request of a server end, the data processing request being used for requesting configuration data of the server end; in response to the data processing request, summarizing configuration data generated by the server end; writing the configuration data of the server end into a distributed storage cluster through a data processing interface pre-packaged by the distributed storage cluster; and in response to a read configuration data request of the server end corresponding to a back-end storage, synchronizing the configuration data to the back-end storage through the data processing interface. The application realizes reliable storage of global configuration data of the server end through the distributed storage cluster, prevents single-point failure, ensures consistency of the global configuration data, and further improves the data synchronization effect of an iSCSI server.

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 provides a method and a device for adjusting a storage space of a container data volume. Relates to the field of container data volume storage capacity expansion, and aims at a scene that a kata security container uses an external iscsi disk as a data volume, when a container storage plug-in controller module (controller) receives a capacity expansion request, the method comprises the following steps: firstly, carrying out capacity expansion on an iscsi LUN on an external storage system, then executing an operation of scanning the disk on a host running by the container to obtain a new size of the iscsi disk, and finally, carrying out data volume expansion on the new size of the iscsi disk. The method comprises the following steps: when a file system is mounted on a kata virtual machine, a container storage plug-in node module notifies a kata container to update the size of a data volume, finally, after a kata-agent running in the kata virtual machine receives a capacity expansion request, the space size of a virtual disk is refreshed, the file system on the virtual disk is expanded in a mounting state, and finally the capacity expansion processing is completed.