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File Allocation Table (FAT) is a computer file system architecture and a family of industry-standard file systems utilizing it. The FAT file system is a continuing standard which borrows source code from the original, legacy file system and proves to be simple and robust.
Disk data management method, data recovery method, device, equipment and medium
The application discloses a kind of disk data management method, recovery method, device, equipment and medium, comprising: when target disk is set to offline state, create bitmap file, when updating operation is performed to target file, determine the disk and storage address where the data block to be updated is stored according to file allocation table, according to the storage address of target data block to be updated, the data state of target data block to be updated in bitmap file is marked as to be updated state.In the online recovery of target disk, determine target data block according to file allocation table, determine data state according to the storage address of target data block, in combination with bitmap file, if it is to be updated state, then update target data block according to target copy, clear the mark of to be updated state of target data block in bitmap file, until all marks are cleared, set target disk to online state.Shorten the time of offline disk online, reduce the IO load of offline disk online.
Owner:SHENZHEN INST OF COMPUTING SCI