12 results about "ISCSI" patented technology

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.

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 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 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 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 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.