Zuckerberg 69fc3ad837 Add ZFS/btrfs snapshot support to backups ...

Creates filesystem snapshots before backup for point-in-time consistency.
Uses mount namespaces to bind mount snapshots over original paths, so
restic records correct paths while reading from frozen snapshot data.

- Auto-detects filesystem type via findmnt
- Deterministic snapshot names using path hash
- Graceful fallback for unsupported filesystems

2026-02-08 20:16:37 -08:00

5.7 KiB

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