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是要手动从备份恢复受损文件 不够自动化 看起来还不如群晖的自动数据巡检方案 https://blog.synology.com/how-da ... nst-data-corruption
Every time data scrubbing is conducted, the file system will recalculate the checksum and compare it with the previously stored data checksum. Meanwhile, the data checksum will cross-check its corresponding metadata checksum to make sure the data checksum itself is intact. In other words, if the recalculated checksum does not accord with the data checksum, a cross-check with its metadata checksum will be followed to see whether it is the file or data checksum that goes wrong. Once data corruption is detected, the system will try to repair the corrupt data by retrieving the redundant copy (RAID 5). |
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