# R-117 Q7 — filesystem aborted IN PLACE, device present: PASS (2026-08-01)

The case R-117 was filed for and the one its spike called *"the worse half"*: a drive dies with **no
detach/return cycle at all**, so the gate never runs and — before agent v0.117.0 — *"nothing is emitted
on any channel, indefinitely"* (R-117a).

Box runs **agent 0.119.0**, so the v0.117.0 `bindUsable` fix is in. Proven by hand before automation.

## Method

The spike used a `dmsetup` error table; these drives are raw SCSI passthrough, so the equivalent state
was produced with ext4's own abort, which lands in exactly the vocabulary `bindLiveness` matches
(`shutdown` / `emergency_ro`):

    # mount -o remount,abort /mnt/adatok
    /dev/sde /mnt/adatok ext4 rw,relatime,abort,emergency_ro 0 0     <-- fs dead
    lsblk: sda sde sdf sr0                                            <-- DEVICE STILL PRESENT

## Result — it surfaces, and the gate acts

Stable across three polls (~2 min), so not a transient:

| Signal | Value | Meaning |
|---|---|---|
| `bound_under_parent` | **false** | the abort surfaced — the fix's stated mechanism |
| `state` | `attached` | correct: the drive *is* still physically there |
| hub event | `storage_disconnected (error) — Meghajtó váratlanul leválasztva: Adatok` | **an event fired** — R-117a's silence is gone |
| storage page | `Adatok … Leválasztva … **Leállított alkalmazások: calibre-web**` | the customer is told which app was stopped |
| `calibre-web` | **not running** | the gate STOPPED the app on the dead namespace rather than restarting it onto one |

`calibre-web`'s library is a bind onto this drive
(`/mnt/felhom-drives/adatok/userdata/media/books → /calibre-library`), which is why it is the app that
must stop. Before the fix this state left it running on a namespace that `EIO`s every byte.

## Recovery — a remount is NOT enough, exactly as the fix intends

`umount -l` + `mount UUID=…` left `abort,emergency_ro` in `/proc/mounts`: the lazy umount leaves the
aborted superblock held open by the stale bind (the spike hit the same thing as
`dmsetup remove --force` → *Device or resource busy*). The agent deliberately does **not** auto-repair
here — `BindAborted ⇒ quiet no-op`, because a re-bind lands on the same aborted superblock and this
runs every 20 s, so repairing would be an infinite silent retry. Clearing it is an operator decision.

A full device close — detach and re-attach the virtual disk, i.e. re-seating the drive — recovered it
in one agent tick:

    /dev/sdb /mnt/adatok ext4 rw,relatime      <-- abort flags gone, letter recycled after the close
    bound_under_parent = True ; calibre-web = Up

The recycled device letter matches the spike's own observation that releasing the bind lets the letter
be reused.

**Verdict: I4's second clause ("an aborted filesystem surfaces and does not silently retry") and I3
("no app is ever restarted onto a dead namespace") both hold on the hardest case in the register.**
