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restic-backup: install upstream 0.19.1 (Debian's 0.18.0 misses needed fixes)

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Live-tree mid-walk deletion crash (0.18.1 #5421), faster index
loading (0.19.0 #5713) and lower check memory (#5610), index repair
robustness, clean exit codes, and the empty-snapshot-on-inaccessible-
source fix (0.19.1 #5667). Upgrades via restic self-update.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Julien Lutran
2026-08-25 12:58:48 +02:00
co-authored by Claude Fable 5
parent de72120105
commit 3de6d01b58
1 changed files with 20 additions and 4 deletions
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@@ -57,9 +57,10 @@ property).
### Memory (the real constraint on this 23/31 GiB-used box)
- Index RAM ≈ 200–300 B/blob → ~0.3 GiB (nextcloud) and
~0.6–1.2 GiB (seafile) per backup run; prune peaks 2–3×. Hence the
repo split (§1).
- Index RAM ≈ 200–300 B/blob → combined `restic-data` index
~1–1.5 GiB per operation (nextcloud ~1 M blobs + seafile ~2–4 M);
prune peaks 2–3×. Accepted with the merged layout (§1) — measure
peak RSS during the evaluation week (`/usr/bin/time -v`).
- `GOGC=20` trades CPU for a smaller Go heap — enable if the seafile
prune ever pressures the box.
@@ -106,8 +107,23 @@ repo (rustic ignores restic's locks); a clean switchover is fine.
## 3. Install + init (root on ks4)
Debian 13 ships restic **0.18.0**, which misses fixes we specifically
need (checked 2026-08-25 against upstream changelogs): the 0.18.1
crash fix for directories deleted mid-walk (#5421 — our live trees do
that nightly), 0.19.0's much faster index loading (#5713 — the merged
restic-data repo loads its index every op) and lower check memory
(#5610), index-repair robustness (#21827/28), clean exit codes
(#4467/#5363 — our drivers key off rc), and 0.19.1's
skip-inaccessible-source fix (#5667 — an unmounted source must not
commit an empty "successful" snapshot). → install upstream **0.19.1**;
future upgrades via `restic self-update` (signature-verified).
```sh
apt install restic sshfs # sshfs: needed by `incus file mount` (§6)
apt install sshfs bzip2 # sshfs: needed by `incus file mount` (§6)
curl -LO https://github.com/restic/restic/releases/download/v0.19.1/restic_0.19.1_linux_amd64.bz2
bunzip2 restic_0.19.1_linux_amd64.bz2
install -m755 restic_0.19.1_linux_amd64 /usr/local/bin/restic
restic version
head -c 32 /dev/urandom | base64 > /root/.restic-passphrase && chmod 600 /root/.restic-passphrase
# ⚠️ password manager, NOW.