31 results about "File deletion" patented technology

The invention relates to a distributed file system recycle bin performance optimization method, which comprises the following steps: in the execution process of an unlink interface of a Linux file system, sequentially completing recycle bin function starting judgment, file deletability verification and recycle bin storage suitability judgment, and obtaining metadata of a target deleted file parent directory from a server; when a file system is created, a global unified root recycle bin directory is synchronously generated, and when a file is deleted, a corresponding recycle bin subdirectory is created in a target MDS based on a parent directory inode number; an atomic operation is executed through a Linux standard rename interface, the file is moved to a corresponding recycle bin subdirectory, and the operation is limited to the interior of a single MDS; when the file is recovered, extracting an inode number of a parent directory, and iteratively querying metadata to restore an original complete path; and during batch recovery, if the original catalogue does not exist or needs to be recovered to a new catalogue, directly and integrally moving the catalogue corresponding to the recycle bin, otherwise, executing recovery operation one by one. The file deletion and recovery performance is remarkably improved, the resource overhead is reduced, and the data consistency is guaranteed.

Methods, systems, and devices for data management are described. A data system may capture a first snapshot of a target computing system at a first time, and a second snapshot at a second time that is later than the first time. The system may compare the second snapshot with the first snapshot to identify whether a set of deleted files includes a quantity of deleted files that satisfies a file deletion threshold. Using metadata associated with the target computing system, the system may identify a subset of the set of deleted files as corresponding to one or more system files. The DMS may then determine whether a ratio between a first value of a deletion metric and a second value of the deletion metric satisfies a threshold ratio. In some examples, the system may refrain from generating an alert based on the ratios satisfying the threshold ratio.

The invention relates to the technical field of distributed storage and big data, and discloses a distributed storage and management method and system for clinical multi-source and multi-modal data, and the method comprises the steps: receiving and preprocessing multi-modal clinical data of a plurality of heterogeneous data sources, and obtaining a data package containing a binary file, a source identifier and preliminary metadata; integrating the data type, the label and the preliminary metadata to generate complete metadata; the file is stored in a FastDFS distributed file system, and an MD5 value is calculated; writing the metadata into the MySQL metadatabase, and triggering file deletion when the metadata fails; and performing retrieval in the MySQL metadatabase according to the query condition, obtaining a target file identifier meeting the query condition, generating a file access address based on the target file identifier, and returning the file access address to the user side. According to the invention, the storage efficiency, the sharing cooperation capability and the system performance stability of clinical multi-source and multi-modal data can be improved.

File names and inodes are indexed directly in a filesystem namespace consisting of a layered set of key value store (KVS) database logical tables. The KVS is used directly for organizing file and directory metadata on a cluster file system instead of traditional Btree structures. Embodiments provide file deletion in the file system namespace, and other features include snapshot deletion and cleaning the namespace. A name hash index is used to speed filename lookup in the file system namespace. Two key types of INODE and DIRENT are used to encode namespace metadata using self-identify variable length records in the namespace. Point-in-time snapshot copies are also formalized using KVS database operations as well operations on sets of snapshots for operations including garbage collection and data replication.

The invention relates to the technical field of computer programming, in particular to a redundant file deleting method and system, electronic equipment and a storage medium. The redundant file deleting method comprises the steps of obtaining a clearing command input by a user, wherein the clearing command comprises a target root directory and a target file extension; starting from the target root directory as a path, traversing the whole item directory of the target item corresponding to the target root directory, searching for all target files of which the extension names are target file extension names, and storing absolute paths of the target files into a file array; obtaining a target file name corresponding to each absolute path in the file array; traversing file contents of all non-target extension name files of which the extension names are not target file extension names in the preset directory array, and judging whether a target file name exists in the file contents or not; if not, taking the target file name as an unreferenced file name and adding the unreferenced file name into an unreferenced array; and outputting all unreferenced file names in the unreferenced array. Redundant files can be effectively deleted, and the project size is reduced.

The application discloses a renaming processing method, a server, a client and a computer readable storage medium. The method comprises the following steps: receiving a data request sent by a client, wherein the data request comprises at least one of a data write request, a data read request, a renaming request, a directory deletion request and a file deletion request; when it is detected that the data request is the renaming request, determining a first name and a second name carried in the data request; obtaining a target object name matched with the first name from a mapping relationship table, wherein the mapping relationship table comprises a corresponding relationship among the target object name, a mapping key and a mapping value, the mapping key comprises the target object name and a mapping value corresponding to an upper level object name of the target object name, and the mapping value comprises a UUID of the target object, wherein the UUID is used to indicate metadata and a data storage address of the target object; replacing the target object name in the mapping key with the second name, and sending feedback information of the renaming success to the client. The application improves the renaming efficiency.

Embodiments of the present application disclose a file playing method and device, electronic equipment, storage medium and product, and relate to the technical field of mobile Internet. The method comprises: selecting at least two file attribute information according to a target selection mode, and generating a corresponding current file attribute information group; pre-downloading and playing a to-be-played file corresponding to the current file attribute information group; in response to a file deletion operation, deleting the to-be-played file corresponding to the current file attribute information group, and taking a next file attribute information group as the current file attribute information group. The embodiments of the present application can solve the problem of unable to download or memory overflow caused by insufficient storage or memory space, realize grouped downloading of to-be-played files, save a large amount of memory resources and network resources, and make the running more stable.

The application discloses a reconstruction method of a read-only file system image, an electronic device and a storage medium, and relates to the technical field of storage. The method comprises the following steps: determining an image reconstruction type, directly replacing corresponding files in an old read-only file system image according to first data block index information corresponding to each first data block in a file to be modified, and updating index information according to a modification result; saving a newly-added file according to second data block index information corresponding to each second data block in the newly-added file, and updating index information according to a file addition result; and deleting files according to third data block index information corresponding to each third data block in a file to be deleted. The method solves the technical problems of high time consumption and low image construction efficiency of reconstructing a file system image, greatly reduces the time for reconstructing a file system image, and improves the image construction efficiency.

This application discloses a file deletion method, system, apparatus, processor, and electronic device. The method includes: a master metadata system receiving at least one deletion request from a client; the master metadata system marking the target directory in the recycle bin as deleted and determining whether the recycle bin's state is a no-task state; if the recycle bin's state is no-task, the master metadata system controls the target thread to execute the deletion operation corresponding to each deletion request, updating the recycle bin's state to a task processing state, and recording the cursor and operation identifier of the deletion operation; if the master metadata system detects that the cursors of all threads indicate that all files in the target directory have been deleted, the recycle bin's state is updated to a no-task state. This application solves the problem of low efficiency when deleting files from the recycle bin in related technologies.

Embodiments of the present application provide a memory database encryption method, a database system and an electronic device. The method comprises: in response to an encryption function start request, encrypting a memory database and writing the encrypted memory database into a first persistent file, and encrypting real-time commands for the memory database and writing the encrypted real-time commands into a second persistent file; deleting a third persistent file to determine the first persistent file as a backup file of the memory database, and deleting a fourth persistent file, the third persistent file being a backup file that is not encrypted before the encryption function is started, and the fourth persistent file being a command log that is not encrypted before the encryption function is started, thereby achieving transparent encryption of the memory database and improving data security.

This application discloses a file deletion method and electronic device, relating to the field of distributed file system technology. The method categorizes files to be deleted into large and small files based on a preset first volume threshold. Different deletion processes are applied to files of different sizes, allowing for simultaneous deletion of large and small files, thus improving file deletion efficiency. Specifically, for small files, data block information of at least two small files is recorded in a storage object, and the physical storage space corresponding to the data block information of at least two small files in the storage object is released in batches. This avoids frequent interactions with the storage device, improving the efficiency of physical storage space release, and further enhancing the efficiency of small file deletion.

The invention provides a file processing method and device, equipment, a medium and a product, and relates to the technical field of data processing, and the specific technical scheme is as follows: obtaining a file path, a file extraction range, a file identifier, a local archiving and cleaning condition and a centralized archiving and cleaning condition corresponding to a target server, setting a uniform file processing rule, and a basis is provided for subsequent file processing. According to the file processing method, the file in the file path is extracted, and the target file matched with the file identifier is screened, so that the phenomena of file mistaken deletion and file mistaken backup are avoided, the file processing accuracy is improved, meanwhile, the complexity and omission of manual searching are avoided, and the file processing efficiency is improved. According to the file processing method and device, the target file is locally archived and cleaned, or the target server is controlled to send the target file to the server and delete the target file in the target server, centralized archiving and cleaning are carried out on the target file, multiple screening and matching are carried out, the target file is accurately determined, and the file processing accuracy is improved.

The invention is suitable for the field of data processing, and discloses a bidirectional guessing method for FAT32 cluster numbers, terminal equipment and a storage medium. The bidirectional guessing method for the FAT32 cluster number comprises the following steps: obtaining a lookup table according to file items and directory items of which the cluster numbers are not deleted, and obtaining a target file item set according to the file items of which the cluster numbers are deleted; creating time ascending order traversal and creating time descending order traversal are conducted on the target file item set, in each traversal process, for each target file item in the target file item set, a guess cluster number of the target file item is determined, and the target file items are inserted into a lookup table according to the guess cluster number and the creating time order; and determining a target cluster number of each target file item in the target file item set according to each guess cluster number in the lookup table. According to the invention, the accuracy of cluster number guessing and the adaptability to a large number of file deletion scenes are improved.

The application discloses a data processing method and device, equipment and a storage medium, and belongs to the computer technical field. The method comprises the following steps: acquiring occupation information of a storage space, wherein the occupation information is used for indicating the occupation of a plurality of running files of a production device on the storage space; in the case that the occupation information exceeds a first storage threshold and does not exceed a second storage threshold, retaining the running files in a first file subset and deleting the running files in a second file subset; in the case that the occupation information exceeds the second storage threshold, retaining the running files in a third file subset and deleting the running files in a fourth file subset; wherein the first file subset comprises a first number of running files with generation time belonging to a first time period, the third file subset comprises a second number of running files with the generation time belonging to the first time period, and the first number is greater than the second number.

The invention provides a database stability testing method and device, equipment, a storage medium and a program product, and relates to the technical field of computers. The method comprises the following steps: acquiring a full-quantity SQL case set, wherein the full-quantity SQL case set comprises SQL statements related to business in a production environment; filtering the full SQL case set, and removing invalid cases to generate a to-be-tested case set; the invalid case comprises at least one of a user-defined excluded SQL (Structured Query Language) statement, a grammar error SQL statement and a file deletion operation SQL statement, and the file deletion operation refers to a command related to user-defined file or system file deletion operation in the SQL statement; executing the to-be-tested case set to obtain an execution result; the execution result is used for verifying the stability of the database; and outputting a stability report according to the execution result. The method is used for achieving the effect of improving the test efficiency.

The invention provides an inter-process interaction method and system, a storage medium and a vehicle-mounted terminal. The inter-process interaction method comprises the following steps: creating an event monitoring thread for monitoring process file deletion events corresponding to a plurality of target processes through an event server process, and storing process file names corresponding to the plurality of target processes; creating a shared memory for data transmission between a target process and an opposite process through the preset target process; wherein when any target process exits, the process file deletion event is triggered through the event monitoring thread on the basis of the process file name corresponding to the target process, so that the process exit state is sent to the opposite process of the target process through the event server process, and the shared memory is deleted. According to the method, the problems of shared memory leakage and the like caused by abnormal exit of one party can be avoided, and the reliability of the system is greatly improved.

This application provides a method, electronic device, storage medium, and chip for cleaning cache files, relating to the field of data processing technology. The method comprehensively considers the time of the most recent access to a cache file, the file size of the cache file, and the number of times the cache file has been accessed, thereby determining the probability that the cache file will be accessed again. The higher the probability of a cache file being accessed again, the lower the cleaning score; conversely, the lower the probability of a cache file being accessed again, the higher the cleaning score. Therefore, deleting cache files in descending order of cleaning score allows the retention of cache files with a higher probability of being accessed again, while deleting cache files with a lower probability of being accessed again, thus achieving intelligent cleaning of cache files that users do not frequently use, improving user experience.

The invention discloses a file deletion method and electronic equipment, and relates to the technical field of distributed file systems, files to be deleted are divided into large files and small files according to a preset first volume threshold value, the files of different sizes are deleted according to different deletion processes, the large files and the small files can be deleted at the same time, and the deletion efficiency is improved. According to the method, file deletion efficiency can be improved, data block information of at least two small files is recorded to a storage object for the small files, physical storage spaces of the at least two small files corresponding to the data block information in the storage object are released in batches, frequent interaction with a storage device can be avoided, physical storage space release efficiency is improved, and file deletion efficiency is improved. And therefore, the file deletion efficiency of the small files is further improved.

The application relates to a metadata sharing method and system for a deletion marker in a union file system, and belongs to the technical field of computers. The method solves the problem of inode resource consumption and inode resource exhaustion risk in the prior art. The method comprises the following steps: initiating a file deletion operation, checking whether a deletion marker file template exists, returning a directory entry of the deletion marker file template if the deletion marker file template exists, creating a temporary deletion marker file, pointing an inode pointer field in a directory entry of the temporary deletion marker file to an inode pointer of the deletion marker file template, establishing a temporary hard link of the temporary deletion marker file to the deletion marker file template, making the temporary deletion marker file inherit the inode of the deletion marker file template, and atomically renaming the temporary deletion marker file to a file name to be deleted and storing the file name to an upper directory of the union file system. The application reduces inode consumption and avoids inode resource exhaustion risk.

The application relates to a file management method based on a Loongson 2K1000 and a domestic path operating system, and the method is based on a domestic Loongson 2K1000 and a path operating system software and hardware platform, a file management task is created after starting, is used for generating a new storage directory and a storage file, and hard disk space is monitored in real time to clean early data files in time. When the directory and the file are created, a real-time clock module (RTC) in the Loongson is used to generate a date and time string, which is attached to the name, so as to facilitate user retrieval and automatic cleaning. Basic file IO in the path operating system is used to perform file system operations such as directory and file creation, file reading and writing, remaining hard disk space query, directory and file deletion and the like. The message queue mechanism of the path operating system is used to design an information storage flow, so as to guarantee reliable reception and storage of data.

This invention relates to a performance optimization method for a distributed file system recycle bin. During the execution of the Linux file system unlink interface, the method sequentially performs recycle bin functionality activation checks, file deletability verification, and recycle bin storage compatibility checks, obtaining metadata of the parent directory of the target deleted file from the server. A globally unified root recycle bin directory is generated synchronously during file system creation. When a file is deleted, a corresponding recycle bin subdirectory is created in the target MDS based on the parent directory's inode number. An atomic operation is performed using the Linux standard rename interface to move the file to the corresponding recycle bin subdirectory; this operation is limited to a single MDS. When restoring a file, the parent directory's inode number is extracted, and the original complete path is reconstructed by iteratively querying the metadata. During batch restoration, if the original directory does not exist or needs to be restored to a new directory, the entire recycle bin directory is moved; otherwise, restoration is performed file-by-file. This significantly improves file deletion and restoration performance, reduces resource overhead, and ensures data consistency.

Methods, systems, and devices for data management are described. A data system may capture a first snapshot of a target computing system at a first time, and a second snapshot at a second time that is later than the first time. The system may compare the second snapshot with the first snapshot to identify whether a set of deleted files includes a quantity of deleted files that satisfies a file deletion threshold. Using metadata associated with the target computing system, the system may identify a subset of the set of deleted files as corresponding to one or more system files. The DMS may then determine whether a ratio between a first value of a deletion metric and a second value of the deletion metric satisfies a threshold ratio. In some examples, the system may refrain from generating an alert based on the ratios satisfying the threshold ratio.

The application discloses a control device for quickly deleting predetermined files and a control method thereof. The control device comprises a host side device and a defense elimination control side device. The host side device comprises a host mainboard CPU, and the defense elimination control side device comprises a micro control module MCU, a USB switching chip and an on-board USB memory. The defense elimination side device is connected to the host mainboard CPU of the host side device through a standardized module interface, and combines a BIOS / OS system configuration and a customized defense elimination program to realize a secret and quick specified file deletion operation in a sudden security scene. The operation is triggered by a specific instruction of a power-on key, and externally appears as a host power-off / sleep state. The whole process has no obvious operation trace, and is suitable for various computer use scenes requiring emergency elimination of confidential files, thereby avoiding the problem of low manual deletion efficiency in a sudden scene. The technical scheme of the application has the characteristics of modularity, secrecy, compatibility and flexibility.

The invention provides a file deletion method, device and equipment, and the method comprises the steps: transmitting a first request message for collecting a subtask to a first metadata server, so as to enable the first metadata server to obtain candidate metadata of a to-be-deleted file; receiving a first response message of collecting the subtask sent by the first metadata server; sending a second request message of recycling the subtask to a second metadata server, so that the second metadata server creates a recycle bin directory, and storing the candidate metadata to the recycle bin directory; under the condition that the candidate metadata in the recycle bin directory is overdue, sending a third request message of a file deletion subtask to a second metadata server, so that the second metadata server deletes the candidate metadata from the recycle bin directory; and sending a fourth request message of the file deletion subtask to the first metadata server, so that the first metadata server deletes the to-be-deleted file. According to the technical scheme, system resources can be efficiently utilized.

The application provides a desktop software cross-platform application construction method, system, medium, product and terminal, constructs a desktop cross-platform double-framework architecture taking NW.js as a main development framework and Qt as an auxiliary development framework, combines the cross-platform desktop application construction capability of the main development framework and the cross-platform adaptation characteristics of the auxiliary development framework, ensures that the operation performance and operation process of the application on various desktop terminals remain consistent, reduces the cross-platform adaptation cost and differentiated development workload; meanwhile, with the aid of an automatic construction tool script, the whole-process operation of project construction, file signing, installation package production, old file deletion, target file uploading and application publishing is realized, the development efficiency is improved, the application function boundary is expanded, the product iteration and online cycle are shortened, and the development demand under a complex business scenario is met.

This invention discloses a data storage and file management method for SATA disks based on NorFlash, belonging to the field of disk management technology. Used in a storage control system, it includes the following steps: the PL terminal of the ZYNQ embedded storage control unit initializes the SATA disk and divides the SATA disk's storage space into a preset number of storage blocks, each block being assigned a fixed storage block address sequentially; a jffs2 file system is mounted on the NorFlash chip; the PS terminal establishes a total list file of SATA disk storage block status in the NorFlash chip and sets the occupancy status of all storage blocks in the total list to idle; the PS terminal establishes a file storage thread, a file reading thread, and a file deletion thread, and when a file operation command is received, the corresponding thread is executed according to the command type. This invention mounts the jffs2 file system on the NorFlash chip, enabling the stored data on the SATA disk to have file-based management and operation characteristics even without mounting a file system on the SATA disk.

The application discloses a file processing method and device and electronic equipment. The method comprises the following steps: receiving a file processing request, wherein the file processing request at least contains cursor information, and the cursor information is used for identifying a first to-be-deleted file in a database cluster; according to a preset deletion sequence, the cursor information is used to delete part of file data of at least one to-be-deleted file in the database cluster in a parallel deletion mode; after each deletion operation is completed, the total amount of deleted data is counted, and when the total amount of deleted data is greater than a preset threshold, metadata information is updated, wherein the metadata information at least comprises the latest target cursor information and the remaining target data amount of each to-be-deleted file, and the target cursor information is used to represent the first to-be-deleted file when the next deletion operation is performed. The application solves the technical problem of low garbage file deletion efficiency in the prior art.

Hadoop Distributed File System (HDFS) express bulk file deletion is described. A list of files in a Hadoop Distributed File System (HDFS) is generated in order of an associated date of files in the HDFS. A predetermined date for retaining selected files in the HDFS is received. A count of files in the list with the associated date of the files in the HDFS older than the predetermined date is identified. Files for deletion from the HDFS having the associated date older than the predetermined date are identified, a number of the files identified for deletion being equal to the count of files. The number of the files in the HDFS identified for deletion equal to the count of files are deleted.

The application discloses a software uninstalling method and device, equipment, storage medium and computer program product, and relates to the technical field of computers. The method comprises the following steps: in response to receiving an uninstalling viewing operation, displaying the uninstalling result of target software, wherein the uninstalling range of a silent uninstalling mode is smaller than that of a manual uninstalling mode; displaying the residual guide information corresponding to the target software; in response to receiving a content viewing operation on the residual guide information, displaying the file list corresponding to the target folder, and displaying the files corresponding to the residual content in a highlighted mode in the file list, the files corresponding to the residual content being the files outside the uninstalling range of the silent uninstalling mode; and in response to receiving a file deleting operation on the files in the file list, displaying the file deleting result. That is, by viewing the residual content corresponding to the target software uninstalled in the silent uninstalling mode through the residual guide information, the accuracy of software uninstalling in the silent uninstalling mode can be improved.

The invention relates to the cloud computing and distributed storage technology, and provides a file management method, a file management device, a computer readable storage medium and electronic equipment, the file management method is applied to a distributed file system, and the method comprises the steps that the distributed file system comprises a plurality of storage fragments; a directory entry of a target file is stored in a first storage fragment, an index node of the target file is stored in a second storage fragment, and the first storage fragment is the same as or different from the second storage fragment; receiving a deletion request for the target file through the first storage fragment, positioning a directory entry of the target file according to the file path, and deleting the directory entry; and reserving the index node through the second storage fragment, adding a deleted state mark for the index node, and creating a recycle bin directory entry associated with the index node in a recycle bin index. The method and the device support efficient, safe and recoverable file deletion.