A library-wide Duplicate Detection run on 2026-06-01 fanned the ML/thumbnail
backfill out at thumbnailGeneration concurrency 8, saturating the shared sdc
HDD and starving etcd -> kube-apiserver down ~30 min (5th IO-pressure incident
on sdc). Capped server-side thumbnailGeneration/metadataExtraction/library to 2
in the Immich DB system-config; documented in the Immich row and recorded the
recurrence + still-TODO IO-isolation fixes in the 2026-05-25 post-mortem (this
also commits that previously-untracked post-mortem).
[ci skip]
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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