Tier 2 rsync-mirrors each HDD app's recovery unit + appdata to a DIFFERENT physical
disk (the only off-drive protection bind-mounted userdata can get; PBS can't reach it).
Auto-enabled, auto-target: prefer another registered drive (different physical disk via
system.SamePhysicalDevice), else the internal SSD for SMALL units only — with a
size-aware headroom guard that REFUSES rather than fill the ~8G guest rootfs, recording
an honest "needs 2nd HDD" status. Status persisted via the surviving CrossDriveBackup;
"2. mentés" UI card now populated. Daily tier2-backup job + POST /api/backup/tier2.
- backup/tier2.go (engine+selection+headroom), tier2_test.go (headroom arithmetic)
- system.SamePhysicalDevice (linux Stat_t.Dev + stub)
- handlers.go Tier2 UI population + tier2DestLabel; backups.html honest no-target reason
- fixed stale TestBackupCopiesOnPath (old felhom-data layout -> in-guest layout)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
4A: user-data drives are backup-target-eligible (not role-locked) — surfaced in
the drive purpose note. 4B: handleStorageImpact returns backup_copies (apps whose
cross-drive backups live on the drive, via backupCopiesOnPath); the wipe/eject
modal warns they'd be destroyed (stays customer-confirmable — copies redundant).
Cross-drive backup engine remains out of scope. Test: TestBackupCopiesOnPath.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
agentapi GuestAttach(where) → POST /disks/guest-attach; runStorageInit/Attach +
handleStorageRegister call attachIntoGuest after register (best-effort, P3 heals).
Closes Branch A: enrolled drives become usable in the guest, banner clears.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
admin