作者ericshliao

很棒的經驗分享. 但這件事沒那麼神, 純粹是案主找的資料救援太遜了.
問AI: does zfs storage metadata backup?
AI 摘要:
Yes, ZFS automatically stores multiple, redundant copies of its metadata (specifically 2-4 copies, including uberblocks) on-disk to protect against single-disk corruption. This redundant metadata is inherent to the filesystem, storing block pointers, file permissions, and directory structures directly on the data drives to allow for auto-repair.

ZFS本身就有存2到4份的metadata備份, 在硬碟全沒事的情況下, 應該只要找到備份的metadata, 就能救回全部的資料.

如果連備份的metadata也全壞了, 只要以前曾做過snapshot, 也有得救.
問AI: does zfs keep old metadata?
AI 摘要
Yes, ZFS keeps old metadata as long as it is referenced by an im...